Overview

About Jellyfish.tech

Jellyfish.tech combines the flexibility to adjust the processes to your business flow and the power of innovation, enabling you to stay competitive.

Projects we work with:

  • AI-powered web development;
  • MVP development & scaling;
  • Product discovery;
  • Custom product development;
  • Software modernization.

Our benefits:

- Up to 30% quicker MVP creation thanks to custom SDK written by the development team and API that covers the CRUD operations automatically;

- Product expertise: the team (CEO & CTO) of product owners were in your shoes to know for sure the challenges you're facing;

- Flexibility and quick adjustment to changes using the Agile methodology (Scrum);

- Communication oriented towards reducing misunderstandings;

- Support at every stage of your product development journey.

Industry expertise:

- EdTech
- Non-profit
- Information technologies
- Wellness & beauty
- Hospitality
- Digital marketplace
- Social media

Being a small agency, we choose quality over quantity, that's why only the professionals, who stay passionate about what they're doing work for Jellyfish.tech, making the transparency, expertise, and integrity the crucial parts of our corporate culture.

What clients say

Review Analytics of Jellyfish.tech

Every review is verified through Goodfirms before it's published.

5.014 Verified Reviews
Quality5.0
Schedule & Timing5.0
Communication5.0
Overall5.0
Review Summary
Summarized from 14 verified reviews · Updated August 2026
Jellyfish.tech is recognized for strong project management, clear communication, and technical expertise across development projects. Clients consistently report timely delivery within budget, responsive feedback incorporation, and a client-focused approach that demonstrates understanding of project requirements. The team is noted for reliability, integrity, and professionalism, with particular strength in improving system usability and performance while seamlessly integrating with internal teams.
✦ AI-generated summary. May not reflect every review.
Detailed Reviews of Jellyfish.tech
Services
Sort By
Write a Review

What reviewers mention most

Dilara, f CEO and Founder at Reservation Services CompanyVerified Review
Posted on Jul 31, 2024

Jellyfish.tech guided us effectively through app creation and core feature definition, leading to a successful MVP launch.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App Development

Jellyfish.tech demonstrated professionalism and expertise throughout the development of our reservations mobile app MVP. From the outset, their team was proactive in addressing queries and issues, which facilitated a smooth development process. Their assistance in defining the core features of the MVP was invaluable, ensuring that the final product met our expectations. The project began with a thorough technical exercise and design discussion, where Jellyfish.tech provided insightful feedback aligned with our vision. Despite the communication being conducted online due to geographical distance, the project manager was highly responsive and supportive, effectively navigating any challenges that arose. One area of improvement noted was the need for a more well-defined roadmap. While Jellyfish.tech successfully delivered a functional MVP and helped us test the app with our audience, a clearer roadmap would have enhanced communication and ensured a more seamless development process.

Artem Koren, CPO at Sembly AIVerified Review
Posted on Jul 31, 2024

Jellyfish.tech's team seamlessly integrated with our internal teams, demonstrating exceptional technical expertise and commitment.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
IT Services

Jellyfish.tech's contribution to our web application project was highly commendable. Their backend component development work involved designing, architecting, and leading a small team to implement a core system component, which included dynamic scaling, complex browser automation, and sophisticated session state management. The results were delivered as promised, with the backend component released successfully and all identified bugs in the web application effectively remediated. The integration of Jellyfish.tech’s resources into our team was smooth and productive. Their participation in our Software Development Life Cycle (SDLC) processes was both effective and harmonious, reflecting their high talent concentration and quality of results. Their technical leadership was a significant asset, demonstrating a deep commitment to addressing client needs and ensuring that all project requirements were met.

Tara King-Hughes, VP Tech, Data, & Innovative Solution at Vital Voices Global PartnershipsVerified Review
Posted on Jul 31, 2024

Jellyfish.tech delivered a robust solution with exceptional communication and a client-focused approach.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Jellyfish.tech demonstrated a high level of professionalism and efficiency throughout the project. Their approach was methodical and transparent, beginning with a thorough understanding of user needs and creating a detailed project roadmap. The design phase, featuring wireframes and prototypes, effectively visualized the user interface and user experience. During development, the team adhered to iterative testing methodologies, including unit and user acceptance testing, ensuring software robustness and zero high post-launch defects. The project manager played a crucial role in streamlining the process, enhancing communication, and defining clear goals. Her detailed project plan, role assignments, and support for the team ensured effective execution and adherence to the project schedule. Her focus on leveraging team members' strengths and fostering a collaborative environment contributed significantly to the project's success. Regular maintenance and updates by Jellyfish.tech ensured that the software remained secure and aligned with evolving network needs.

George Cretu, Co-Founder at WebEffects Inc.Verified Review
Posted on Jul 31, 2024

Jellyfish provided skilled technical support and project management, consistently delivering reliable results on time and within budget.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Web Development

Our experience with Jellyfish has been highly positive. They were instrumental in supporting us when our team was understaffed. Jellyfish worked on two key projects, applying their expertise in PHP, Angular, and AWS to deliver high-quality web applications. Their ability to collaborate effectively with our existing development team, as well as manage projects independently, was a major asset. For one of the projects, Jellyfish directly interacted with our client, demonstrating their flexibility and professionalism. The other project, a social media app for sports, featured a sophisticated function for recording critical moments, which Jellyfish expertly handled on the backend. Despite some minor issues with testing, their overall performance was commendable. Jellyfish's communication is a standout feature. Their team is easy to reach, responsive, and maintains clear channels of communication via Skype, Slack, Asana, and JIRA. They deliver projects on time and within budget, though their pricing is not the lowest, it reflects their quality of service. Our collaboration, which began in 2013, remains positive, and we continue to consider them for future projects.

Niall Oulton, CEO at 1749Verified Review
Posted on Jul 31, 2024

Jellyfish.tech has demonstrated a profound understanding of our project requirements, delivering substantial improvements in system usability and performance.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Since engaging with Jellyfish.tech, we have experienced notable enhancements in our platform’s functionality. Jellyfish.tech played a crucial role in refining the SIMBA platform, leveraging their expertise in UI/UX design and system architecture to meet our project goals. Their iterative approach, which emphasized actively seeking and incorporating feedback, allowed for continuous refinement and alignment with user needs. The Model Management System saw significant upgrades, including intuitive model organization and performance optimization, which facilitated better management and faster processing of complex models. Additionally, Jellyfish.tech revamped the UI to enhance user experience, integrating user-friendly designs and advanced visualization tools. A standout feature, the asynchronous model fitting, was particularly impactful. It allows users to queue and simultaneously process multiple models, thereby reducing wait times and boosting productivity. Jellyfish.tech's strong project management and commitment to timely delivery were evident throughout the project. Their proactive approach and deep understanding of our needs ensured that the enhancements not only met technical specifications but also resonated well with end-users. The iterative improvements and focus on user feedback have made SIMBA more intuitive and efficient.

Greg Vandeligt, Co-Founder at Level35Verified Review
Posted on Jul 31, 2024

The Jellyfish team has been exceptional in transforming our concepts into reality with their reliable and professional approach.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

We initially engaged Jellyfish through Upwork, starting with small, discrete contracts to address various parts of the OneViewPPM system. After a year of evaluating their reliability, expertise, and integrity, we transitioned to using their team full-time. The team includes three full-time developers, a part-time tester and QA resource, a technical writer, and a part-time project manager who serves as our single point of contact. Their diligent project management, combined with their technical prowess, has enabled us to scale OneViewPPM effectively from hundreds to thousands of projects and users. The team’s ability to handle both major refactoring tasks and everyday coding challenges has significantly enhanced our platform’s capabilities and performance.

Dilara, CEO and Founder at Reservation Services CompanyVerified Review
Posted on Jul 15, 2024

Successfully launched a functional MVP for our app.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App Development

Our journey with Jellyfish.tech began with an online search, where we shortlisted several companies and eventually chose Jellyfish.tech after face-to-face communication. Their genuine interest in our project and aligned feedback convinced us they were the right fit. We provided them with a technical exercise and design guidelines, discussing the technologies to be used for the development. Throughout the project, the Jellyfish.tech team was professional and adept at addressing any queries or issues that arose. They were instrumental in defining the core features of our app and successfully launched a functional MVP. The MVP allowed us to test the app with our target audience and gather valuable feedback, which will guide further development. Communication was conducted online due to the distance, but the project manager was responsive and always available to assist. He walked us through the app creation process and was particularly helpful in clarifying core features for the MVP.

Artem Koren, CPO at Sembly AIVerified Review
Posted on Jul 15, 2024

Jellyfish has proven to be a reliable and highly skilled partner.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Testing Services

Our experience with Jellyfish.tech has been exceptional, characterized by their seamless integration with our internal team and effective participation in our Software Development Life Cycle (SDLC) processes. The work was divided into two main streams. Firstly, for backend component development, Jellyfish.tech's resource was instrumental in designing, architecting, and leading the implementation of a core system component. This complex task involved dynamic scaling, intricate browser automation, and sophisticated session state management, all of which were handled with impressive technical expertise and leadership. Secondly, their involvement in QA activities significantly supported our testing efforts for new web application releases. Jellyfish.tech's resource augmented our QA team, helping to catch and remediate bugs efficiently. This thorough QA process ensured the successful release of the backend component and the smooth operation of our web applications. The Jellyfish.tech team integrated well with our culture, demonstrating dedication to our needs and participating effectively in our SDLC processes. Their high talent concentration and the quality of their results were consistently impressive. The technical leadership they provided was of the highest standard, ensuring that all tasks were executed with precision and expertise.

Tara King-Hughes, VP Tech, Data, & Innovative Solution at Vital Voices Global PartnershipsVerified Review
Posted on Jul 15, 2024

Thorough project management and tech-client-focused mindset

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Our collaboration with Jellyfish.tech has been exceptional. From the outset, they worked closely with stakeholders to understand user needs and define the project scope. The creation of a comprehensive roadmap guided the entire development process, ensuring alignment with our objectives. The design phase included creating wireframes, mockups, and prototypes that provided a clear visualization of the software's user interface and experience. The development phase was handled iteratively, with regular reviews to keep the project on track. Jellyfish.tech employed various testing methodologies, including unit testing and user acceptance testing, to ensure the software's robustness. The launch process was seamless, involving the release of the software on servers, database setup, and ensuring accessibility for our community network. Their ongoing maintenance, updates, and improvements have kept the software relevant, secure, and aligned with our network's evolution. The project manager played a pivotal role, streamlining the process, enhancing communication, and facilitating the definition of clear goals. She provided a detailed project plan, clearly outlined objectives, timelines, and deliverables, and ensured each team member was assigned roles that leveraged their strengths. This effective allocation of tasks ensured everyone was working in their area of expertise, contributing to the project's success. The project manager also actively listened to team members, considered their suggestions or issues, and provided necessary tools, documents, or templates to perform their jobs efficiently. Her efforts in fostering collaboration across teams, promoting synergy, and encouraging knowledge-sharing created a positive and productive work environment. Regular meetings facilitated by her ensured everyone felt valued and motivated to contribute to the project's success.

George Cretu, Co-Founder at WebEffects Inc.Verified Review
Posted on Jul 15, 2024

Jellyfish.tech is a talented technical team with excellent project management skills, consistently delivering on time and within budget.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Mobile App DevelopmentWeb Development

Our experience with Jellyfish.tech has been highly positive. We engaged their team for two distinct projects due to our staffing limitations. One project involved working directly with our client on web application development, while the other was a social media app for sports featuring a complex backend that records the last seven seconds of an action on the field. Throughout these projects, Jellyfish.tech's expertise in PHP, Angular, and AWS was evident. Since we began working with Jellyfish.tech in 2013, their reliability and responsiveness have stood out. Their technical lead is always accessible and maintains clear communication, a critical factor in our successful collaboration. While their pricing isn't the lowest, it offers great value for the quality of work delivered. Communication with Jellyfish.tech has been seamless, initially via Skype and more recently through Slack, with project management facilitated by Asana and JIRA. Their team integrates well with our existing developers, demonstrating flexibility in either a collaborative or independent capacity. Despite occasional missed bugs, which is understandable given the complexity of our projects, Jellyfish.tech has consistently provided good services, meeting our expectations. Their work has been timely, within budget, and of high quality. The feedback from our clients has been positive, reinforcing our satisfaction with their performance.

Greg Vandeligt, Co-Founder at Level35Verified Review
Posted on Jul 15, 2024

Jellyfish.tech has been instrumental in improving OneViewPPM with flawless project management and a culture of integrity.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Our experience with Jellyfish.tech has been outstanding. OneViewPPM required extensive enhancements to facilitate data entry and produce standardized project reporting. Jellyfish.tech supplied additional programming capacity, experience, and expert advice, enabling continuous development and maturation of the platform. The Jellyfish team consists of three full-time developers, a part-time tester and quality assurance resource, a technical writer, and a part-time project manager who serves as our single point of contact. Their project management has been exceptional, characterized by diligent and responsive follow-up, effective management of activities, and a proactive approach to sharing ideas and challenging concepts. This collaboration has resulted in better outcomes and a more refined product. Jellyfish.tech excelled in turning our wireframe concepts into functional code, broadening our thinking and designs to areas we hadn't considered possible. They successfully undertook major refactoring of code and system architecture, allowing OneViewPPM to scale from hundreds to thousands of projects and users without impacting existing system users. Communication has been a priority for Jellyfish.tech, and their management has been oriented towards minimizing the language barrier, which works extremely well. This emphasis on clear and concise objectives has helped us work through problems and make better system improvements. Integrity is a major value for us, and Jellyfish.tech has consistently demonstrated honesty and transparency about their work hours, resource availability, and project progress. In our 18-month relationship, we've never had difficult conversations about their performance. Any suggested improvements are promptly addressed, reflecting a respectful and professional relationship.

Andrei Stepin, CEO at GateMeVerified Review
Posted on Jul 15, 2024

The enhancements made by Jellyfish.tech have significantly improved GateMe’s usability and performance.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Our collaboration with Jellyfish.tech has been outstanding. From the start, we sought a reliable development partner for a long-term relationship, and Jellyfish.tech proved to be the perfect fit. They undertook the ambitious task of updating and enhancing GateMe, our event management platform, focusing on refining the Model Management System, UI enhancements, and introducing asynchronous model fitting. Throughout the project, Jellyfish.tech demonstrated a strong project management approach, consistently delivering tasks within or close to the estimated time of arrival (ETA). Their proactive involvement, adaptability, and excellent communication skills were evident. They conducted a comprehensive analysis of the existing platform, collaborated with stakeholders to identify pain points, and implemented updates and new features aligned with industry trends and user needs. Key enhancements included: 1. Updated Statistics and Reports: Jellyfish.tech enhanced the platform's statistics and reporting sections, providing comprehensive insights for event organizers, which facilitated better decision-making. 2. Promo Code Functionality: They designed and implemented a robust promo code system, enabling organizers to create, manage, and monitor promotional campaigns effectively. 3. Backlog Task Completion: They addressed existing bugs, integrated new functionalities, and enhanced platform capabilities by integrating APIs of other platforms. 4. The Jellyfish.tech team conducted rigorous testing to ensure functionality, security, and user-friendliness, addressing any identified issues promptly. Their commitment to a proactive feedback loop ensured continuous improvement and alignment with user expectations.

Niall Oulton, CEO at 1749Verified Review
Posted on Jul 15, 2024

They significantly enhanced SIMBA’s usability and performance through expert project management, iterative development, and responsive feedback incorporation.

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Software Development

Since beginning our engagement with Jellyfish.tech, we have observed notable improvements in SIMBA’s usability and performance. The primary goal was to enhance both the Model Management System and the UI, with a special emphasis on asynchronous model fitting. Jellyfish.tech excelled in this project by leveraging their expertise in UI/UX design and system architecture to address our needs effectively. Their contributions included refining the Model Management System with intuitive organization, performance optimization, and advanced features for managing and analyzing models. The UI enhancements focused on user-friendliness and integrating advanced visualization tools to improve the user experience. Notably, Jellyfish.tech implemented asynchronous model fitting, allowing users to queue and process multiple models simultaneously, which greatly increased productivity and reduced wait times. Jellyfish.tech’s project management was exemplary; they consistently delivered on time and demonstrated a proactive approach to incorporating feedback. Their iterative development process ensured that the project evolved in response to user needs and technical requirements, leading to a product that not only met but exceeded our expectations. The improvements have resulted in a more intuitive, efficient, and productive marketing analysis experience.

Finn
Finn, CEO at ConsultantVerified Review
Posted on Apr 13, 2020

Development of a complete inspection web app system

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Web Development

Jellyfish have built our entire system, which consists of: * a mobile PWA to retrieve inspections and file reports using JSON Schema under the hood * a cloud-based SQL database server * an Angular dashboard app to administer thousands of clients, objects, inspections, and reports. We selected them out of 35 candidates. They have been invaluable to us as they have: * suggested maintainable technologies that have saved us considerable investments * spoken out when I have been wrong * made thoughtful considerations throughout the project development phase * generally cared deeply for our project We are grateful to have found this wonderful group of people, and we continue to use them as we grow our business.

Focus

Service Focus of Jellyfish.tech

How the team's effort is distributed across services.

30%30%10%10%10%

Industries Focus

20%20%20%20%5%5%5%5%

Client Focus

Small Business90%
Medium Business10%
Selected Work

Client Portfolio of Jellyfish.tech

Where their work concentrates - by industry, budget, and timeline.

Project Industry

Other19%
Fintech6%
Gambling6%
Social13%
Business Services6%
Entertainment19%
Education13%
Advertising & Marketing13%
Healthcare6%
Major industry focus
Other

Project Cost

Not Disclosed31%
$10001 to $5000069%
Common project cost
$10001 to $50000

Project Timeline

1 to 25 Weeks94%
51 to 100 Weeks6%
Typical timeline
1 to 25 Weeks

Clients: 10

Vital Voices Global PartnershipSembly AILevel35GateMeJayboxPPC MastermindsAdwords RobotDigital NinjaAskSamieChurchCopy AI

Portfolios: 16

Executive Interview

Executive Interview of Jellyfish.tech

Kseniia Goldovska
Kseniia Goldovska
CEO & Founder
Visit Profile

Kindly share your feedback on how Goodfirms has been doing so far in increasing your visibility among potential clients.

When we just started out, we used Goodfirms as one of the essential platforms for boosting our visibility. 
And we really loved the added Q&A functionality, guest blogs, and option to upload a resource. The last feature helped us get a few leads who had downloaded our guide.

Please introduce your company and give a brief about your role within the organization.

Jellyfish.tech is a Ukraine-based web & mobile development team with a product-oriented mindset.

Our mission is to create and scale MVPs in 10 weeks, reducing time-to-market and supporting founders at every stage of their journey.

We create stable web & mobile products to satisfy any customer needs, from startups to small- and medium-sized companies, adjusting our workflow to your specific product type.

What is the story behind starting this company?

I founded the company in 2016 with a technical co-founder. During this time, we met awesome people who joined our team and managed to create our own product. We went through all the stages a startup owner goes through to better understand how we could help create a product people will love.

What are your company’s business model–in house team or third party vendors/ outsourcing?

We mostly work with an in-house team of developers and managers. We set up the remote work processes and established the web & mobile development flows tailored to specific project types, following the industry's best practices.

We also released a custom starter development kit (SDK) — an “assembly line” for web & mobile projects the Jellyfish.tech team has built to accelerate the development process making it more predictable. The starter development kit is to cover the typical units of functionality (authorization & login, payment, content upload) with the pre-built parts of code that help us focus on custom features, saving your budget.

How does your company differentiate itself from the competition?

  • Up to 30% quicker MVP creation thanks to the custom SDK written by the development team and API covering the CRUD operations automatically.
  • Product expertise. We know the challenges startups face: we’ve walked in your shoes building our own product, searching for a product-market fit, pitching, developing an MVP, failing, and succeeding.
  • Flexibility and quick adjustment to changes. Using the Agile methodology, we're able to reprioritize quickly, which is important during both MVP and large project creation.
  • Communication is oriented towards reducing misunderstandings. We know how often miscommunication happens, especially when working on complex tech products. So we create detailed project documentation & discuss every feature to make sure we're on the same page.
  • Support at every stage of your journey. The team of ex-startup owners, & competent project managers will guide you through every stage of product creation, advising the best ways to cut costs and maximize the value.

What industries do you generally cater to? Are your customers repetitive? If yes, what ratio of clients has been repetitive to you?

  • EdTech.
  • Information technologies.
  • On-demand services.
  • Non-profit.
  • Wellness & beauty.
  • Hospitality.
  • Digital marketplace.
  • Social media.

Please share some of the services that you offer for which clients approach you the most for?

Now, it’s MVP development services.

What kind of support system do you offer to your clients for catering to their queries and issues?

We offer not only full technical support but also business advice such as startup consultations with our founders, business analysis, marketing support, and our network.

What kind of payment structure do you follow to bill your clients? Is it Pay per Feature, Fixed Cost, Pay per Milestone (could be in phases, months, versions etc.)

It's a Time & Material Model (Pay per milestone) mostly, as we follow an Agile approach to project management.

Do you take in projects which meet your basic budget requirement? If yes, what is the minimum requirement? If no, on what minimum budget you have worked for?

We work with $10k + projects.

What is the price range (min and max) of the projects that you catered to in 2021?

15k - 30k.

Where we are

Locations (1)

Offices where Jellyfish.tech operates.

Headquarter
Ukraine

Ukraine

Mendeleeva 12
Kyiv, kyiv 01001
+380997189002