Overview

About Leading Solution

🚀Lead Research Service - 💰Avg. 250$-500$ for 500 contacts I handle the entire lead research process from start to finish - building accurate, verified, and enriched contact lists tailored to your target audience.

🚀 Lead Generation Service - 💰Avg. Cost: $330–$400 I take care of everything in the outreach process, so you can focus only on qualified replies and new opportunities.

🔧 Service Includes:
🔹Dedicated Account Manager
🔹Strategy: Full Lead Generation (Pipeline + Workflow)
🔹New Email Domain Creation & Setup (DMARC, DNS, SPF, MX)
🔹Anti-Spam & Domain Health Checks (Warm-up Process)
🔹Content Writing with ChatGPT + Claude (based on pipeline strategy)
🔹Setup Automation for Email Outreach
🔹Weekly Reports and Campaign Metrics Tracking
🔹HTML Templates
🔹Email Signature Code
🔹CRM Integration (if required)

🏆Expert-Vetted (Top 1%) Upwork. 👉 40,577+ hours list building projects. 👉 484+ successfully completed projects. B2B List Building and Data Entry Specialist. We use different manual searching methods and tricks, special tools (free and paid premium accounts), and my long-term experience to get valid information.

Our team is a group of highly motivated and skilled individuals with the main purpose of expressing our unique and creative solutions to web research, data entry, and lead generation to the business organization. Our dedicated team performs task-oriented research to capture data, verify and calibrate it, and source contact information necessary for your purposes. Each data unit is unique to contribute to your business with the help of qualitative data sourcing. Count on our competence and expertise when it comes to data delivery and the creation of your ideal customer profile.

Why should you hire us?:
🏆Expert-Vetted (Top 1%) Upwork
☑️ 40,577+ hours list building projects;
☑️ 484+ successfully completed projects;
☑️ 100% Job Success Score;
☑️ Team of friendly and hard-working experts;
☑️ My knowledge, skills, and experience are proved by completed projects and feedback received.

What clients say

Review Analytics of Leading Solution

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

4.96 Verified Reviews
Quality4.8
Schedule & Timing5.0
Communication5.0
Overall5.0
Review Summary
Summarized from 6 verified reviews · Updated August 2026
Clients consistently praise Leading Solution for accurate, precise work delivered on time, particularly regarding lead generation and data quality. Strong communication and personalized service from the team are frequently highlighted as standout aspects of the experience. The company is noted for attention to detail, reliable project execution, and ability to meet specified requirements efficiently, even on complex projects.
✦ AI-generated summary. May not reflect every review.
Detailed Reviews of Leading Solution
Services
Sort By
Write a Review

What reviewers mention most

John Ben, SEO specialistVerified Review
Posted on May 9, 2025

Reliable, detail-oriented team that delivered accurate B2B lead lists on time.

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

Working with Leading Solution was a smooth and professional experience from start to finish. We needed a high-quality, targeted list of leads for our outbound SaaS campaign, and they delivered far beyond expectations. They used a combination of premium tools and manual methods to verify all data points—emails, phone numbers, LinkedIn profiles, company details—and everything was extremely well-organized and accurate. Their responsiveness and understanding of our target customer made the collaboration seamless. This project significantly improved the efficiency of our sales outreach and saved our team a ton of time.

Luis Sánchez García
Luis Sánchez García, Account Growth Sales Specialist at KyndrylVerified Review
Posted on Apr 13, 2022

Amazing results for a not easy project. Top communication with the team

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Digital MarketingMarket Research

Vitalii and team are great at Marketing Research. Quality of work which included professional opinions. I recommend them not only because of quality, but cooperation with them is easy and reliable about the result.

Tirso Perez
Tirso Perez, HR at at PersonioVerified Review
Posted on Mar 24, 2022

Very accurate and precise work with good communication. Amazing results with very useful project!

Overall rating5.0
Quality5.0
Communication5.0
Schedule & Timing5.0
Digital MarketingMarket Research

We have received a list with top-quality contacts/leads from different companies that we selected before. The Leading Solution´s team give a tremendous effort to give the quality given.

Jose Garrido
Jose Garrido, HR Solutions Specialist at at PersonioVerified Review
Posted on Nov 24, 2021

Accurate and precise work with good communication. High standards of this company.

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

At the end of the year and with a number of business plan objectives still to be met, I contacted vitalii and his team to build a precise and localised list of contacts in Europe with the aim of boosting our business. I had a quick response, they were very transparent and the customer service was 10/10

Igor Verkhovets
Igor Verkhovets, Marketing Research Analyst at at TTT GroupVerified Review
Posted on Jul 2, 2020

We were impressed by unspoken understanding and the perfect final result!

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

We are glad to find such reliable assistants for market and competitor comprehensive research. Vitalii and his team have done a perfect job. The high-level communication, a goal-oriented approach, and satisfying results can characterize our cooperation. Additionally, we got helpful recommendations for the subsequent stage of our marketing campaign.

Pav Aleksandruk
Pav Aleksandruk, Developer at haqHUBVerified Review
Posted on Apr 8, 2020

LEad generation

Overall rating5.0
Quality4.0
Communication5.0
Schedule & Timing5.0
Other ServicesBusiness Services

Leading Solution are great, fast, and reliable lead research company. It has been excellent experience working with them. Awesome communication!

Focus

Service Focus of Leading Solution

How the team's effort is distributed across services.

100%

Industries Focus

20%20%10%10%5%5%5%5%5%

Client Focus

Small Business50%
Medium Business30%
Large Business20%

The Positioning

AI Tools & Purpose

The stack the team uses to move faster.

ChatGPT
For Content
Claude
For Content
Gemini
For Google Sheets
Canva
For Content
Selected Work

Client Portfolio of Leading Solution

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

Project Industry

Advertising & Marketing100%
Major industry focus
Advertising & Marketing

Project Cost

$10001 to $5000057%
$0 to $1000038%
$50001 to $1000005%
Common project cost
$10001 to $50000

Project Timeline

1 to 25 Weeks100%
Typical timeline
1 to 25 Weeks

Clients: 33

WeworkFreshworksPreplyTokyWokyEyesonAlleoncapitalTripscoutGiving TechnologiesRealAtomBambergerGobrowsiVery Good GroupCodificationPaleo JerkyResicertActus InternationalCushman & WakefieldTapia ConsultingPSQ GroupMemriseNuno FreitasB2BespokeTheSugarHouseTexas HoldingsGeek SoftwareRockland PartnersTitanFileRobot LotusClue GroupGivity MediaSuperGForbes TechnologiesExploryst

Portfolios: 21

Executive Interview

Executive Interview of Leading Solution

Vitalii Korotchyn
Vitalii Korotchyn
Founder/CEO
Visit Profile

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

Goodfirms has been very beneficial in reaching out to our potential clients as it generated good traffic on our site. In fact, we have actually gained a few clients from Goodfirms. A number of clients have reached out to us saying, “Hey, I found your company on Goodfirms.” With these words, we start great cooperation.

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

Our team is a group of highly motivated and skilled individuals with the primary target of expressing our unique and creative solutions relating to b2b list building, web research, data entry, and lead generation to the business organization.

What is the story behind starting this company?

I started with freelancing on Upwork. I have a strong desire to develop my own company and I have devoted a great of effort and time in order to achieve my goal. I even work during weekends to make sure all my tasks are met. Someone said that if you have your own business, you need to live in your business. For me, that is very true. My goal is 100% client satisfaction, and I always try to find and test the best solution for projects that can give my clients the best result. Woking hard to long-term cooperation with every client I start to invite the team to my company and now we are happy to call Leading Solution.

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

When we first started our business, my wife and I were the ones who did the work to build the family business. Over time, we got more and more projects, so we began to recruit new team members. At first, we tried to outsource this work; however, the quality of the outsourced work was not as we expected. That was when we decided to start building an in-house team. We train our team members in the office and then offer them the option to work from home.

How does your company differentiate itself from the competition?

The market for Lead Research, List Building, and Lead Generation is very competitive. Different companies offer different ranges of prices. We chose not to work with low prices. Instead, we work on building high-quality service. We combine intelligent research with tools that help us to find any information of the best quality. Clients don’t want to waste their time formatting lists or any information that we provide; hence, we deliver all the data and information accurately and ready for use. We also take pride in our flexibility. We are always ready for any urgent work, so clients feel better to work with us, knowing that we always make it all in time. We make sure that we stand out among our competitors by always leveling up the quality of services we provide.

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

Before the C-19 outbreak, we were working closely with the real estate industry. However, times have changed, and we are now working with fintech, consulting, education, marketing, IT, and many others. In short, we cater to clients from various industries. We have clients that we have worked with for 4 -5 years. Moreover, we have a great ratio of clients whom we have worked with continuously. Some of these clients have used our services to complete more than 20 projects recurrently.

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

List Building and Lead Research – this is our top service. These services have a lot of names, which include Data Research, B2B List Building, Prospect List, Data Mining, etc. All of these have just about the same result.

What is your customer satisfaction rate according to you? What steps do you take to cater to your customer’s needs and requirements?

According Upwork stats, we have a 100% satisfaction rate. First, the most important thing is to understand client’s needs, we need to know what they want and what they expect of our work. So when our clients ask us for help with research, we do our best to make it in the best way possible to make the projects successful. That is why we offer free test work, so our clients can be sure that they will get what they need.

Communication and hard work are the main instruments that help combine clients' ideas and successful result.

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

We offer 24/7 service. Our main research office is based in Ukraine, so the main research work is done in European time but we aim to reply to queries as fast as we can.

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.)

The payment structure is varied. It’s can be hourly or fixed – all according to the project.

We propose payments that will be better to our clients according to their projects. Overall, we recommend the best payment structure to best suit our clients’ needs and help them save a lot of money.

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 projects with various ranges of budgets, as long-term cooperation can start with a small project. Saying this, we prefer if we are made aware at the beginning of the project is going to be long-term as these are more preferable than one-time projects. However, we consider one-time projects as well.

What is the price range (min and max) of the projects that you catered to in 2020?

In 2020, we have catered to projects with budgets ranging from $25 to $10000.

Where do you see your company in the next 10 years?

Currently, we are starting to add a new service which is Link Building, and we don’t stop on this. In the future, we hope to provide a full cycle of lead generation solutions for our clients.

Where we are

Locations (5)

Offices where Leading Solution operates.

Headquarter
United States

United States

125 S Clark St
Chicago, Illinois 60603
1 (771) 213-3384
United Kingdom

United Kingdom

123 Buckingham Palace Road London, England SW1W 9SH
London, England SW1W 9SH
1 (771) 213-3384
Germany

Germany

Dircksenstrasse 3 Berlin, BE 10179
Berlin, Berlin 10179
1 (771) 213-3384
United States

United States

125 S Clark St.
Chicago, Illinois 60603
Ukraine

Ukraine

Kyiv, st. Olexandra Dovzhenko, 3
Kyiv, kyiv 02000