EXPLORE

CSS HTML JavaScript PHP WordPress
Profile cover photo
User Avatar

Sergey

@keepitok

verified-v3.svg
4.8
41

7.4

7.4

100%

GTM Engineer ∙ 10+ yrs in workflow automations

$30 USD / Hour

Flag of BRAZIL

Brazil (5:18 PM)

Joined on August 3, 2010

$30 USD / Hour

With 15+ years in software engineering and MarTech, including leading engineering for European SaaS products, I now help businesses build and automate their GTM systems. ✅ Workflow Automation: Automate repetitive sales, marketing, and RevOps processes with n8n, APIs, and custom code. ✅ CRM Integrations: Connect HubSpot, Salesforce, websites, marketing tools, and internal systems — with reliable data sync and clean field mapping. ✅ Data Enrichment & GTM Workflows: Build enrichment, lead scoring, routing, outbound, and AI-powered workflows using tools like Clay and n8n. ✅ Attribution & Revenue Data: Connect acquisition sources, leads, deals, and revenue so teams can see what actually drives results. I combine hands-on engineering with a business-first approach: understand the funnel and process first, then automate the parts that create measurable value. From a simple CRM integration to a custom revenue data pipeline, I can handle the full workflow — requirements → architecture → APIs → automation → QA → handoff. Need to connect your GTM stack or automate a messy manual workflow? Let’s talk.

Verifications

On time

96%

On budget

96%

Accept rate

97%

Repeat hire rate

32%

Portfolio

Portfolio

11437166
11394012
10438098
10438121
10438093
10438144
11437166
11394012
10438098
10438121
10438093
10438144
4.8 · 41 Reviews
41 Reviews
C
Flag of SPAIN

Elite

5.0

€154.62 EUR

3 years ago

Optimize travel package pages

Working with Sergey was very good and efficient! He is fast, professional and dedicated. I hope to be able to work on other projects with you, thanks for your help Sergey! [27 November, 2023] It was great working on this project with Sergey. He is quick to respond, efficient and very professional. thanks for all the help! I hope to work with you again on other projects!

Share

L
Flag of BRAZIL

Liliane

5.0

$149 USD

3 years ago

Shopify customization: improve UX recipes filters

Working with Sergey was awesome! Communication was super smooth, and their dedication and expertise truly shone through. Highly recommended for a friendly and top-notch experience! We´ll definetely work with Sergey again!

Share

User Avatar
Flag of UNITED STATES

Hakan

5.0

$297 USD

3 years ago

Homepage and a product page we

Sergey was great to work with, very detailed and thorough, will definitely work with him again. Thank you.

Share

User Avatar
Flag of POLAND

Peter

5.0

$5,887 USD

13 years ago

NatuLang apps

Excellent job and quality.

Share

User Avatar
Flag of CANADA

Sebastien

4.2

$5,121 CAD

14 years ago

HTML5 migration

This is the second time we use Keepitok and they delivered what needed to be done, in budget, in time. They didn't apply some "blanket recipe" to the project and tried to understand what we really needed and do the right thing to make this project successful. They didn't hesitate to challenge us on some of our assumptions, which is always appreciated. I would use them again and would recommend them.

Share

Experience

Freelancing as a CRO Expert

Apr, 2022 - Present

4 years, 3 months

Crisp Code Ltd, UK

Apr, 2022 - Present

4 years, 3 months

✅Full-service CRO and Shopify development ✅Landing page and eCom store creation

Apr, 2022 - Present

4 years, 3 months

Project & Product Manager, Tech Lead

Nov, 2007 - Mar, 2022

14 years, 4 months

keep it ok, outsource software development

Nov, 2007 - Mar, 2022

14 years, 4 months

• Executed technical and business strategies; managed 30+ projects, operations, and budgets. • Managed SDLC for mobile and web solutions, including e-commerce. • Led UI prototyping and ensured project quality. Achievements: • Upgraded APSIS to a key account with top-tier support and quality.

Nov, 2007 - Mar, 2022

14 years, 4 months

Project & Product manager, Tech leader

Jan, 2012 - Jun, 2019

7 years, 4 months

APSIS, Sweden

Jan, 2012 - Jun, 2019

7 years, 4 months

Led a team of 12 to deliver mobile and web projects within SaaS "Profile Cloud" (digital marketing automation platform). Clients include Tele2, Three, Thomas Cook, and Arla. Achievements: • Tripled deployments with Scrum & DevOps. • Cut issues in half with QA protocols. • Standardized visual design for web consistency.

Jan, 2012 - Jun, 2019

7 years, 4 months

Education

University of Westminster

2018 - 2019

1 year

MSc - Entrepreneurship, Innovation and Enterprise Development

Flag of UNITED KINGDOM

United Kingdom

2018 - 2019

1 year

Qualifications

Data-driven Product Management

2019

GoPractice

I completed a simulation course that honed my ability to manage and scale products by teaching me vital metrics, A/B testing techniques, hypothesis validation, and ROI evaluation across multiple growth channels.

2019

Publications

ExCITATION Chrome extension with 120k+ users, 4.8⭐

Google Web Store

A tool for academics, scientists, PhD students, and researchers overall to speed up their literature search in the Google Scholar database. - extension: designed, project managed, code fixes, web store submission - landing page creation

Certifications

G

General Orientation Exam

Registered Users

Total Jobs Posted

Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)

Copyright © 2026 Freelancer Technology Pty Limited (ACN 142 189 759)