Loading...
Loading...
Himalayas
About usHimalayas PlusCommunityTech stackEmployee benefitsTerms and conditionsPrivacy policyContact usFor job seekers
Create your profileBrowse remote jobsDiscover remote companiesJob description keyword finderRemote work adviceCareer guidesJob application trackerAI resume builderResume examples and templatesAI cover letter generatorCover letter examplesAI headshot generatorAI interview prepInterview questions and answersAI interview answer generatorAI career coachFree resume builderResume summary generatorResume bullet points generatorResume skills section generator© 2025 Himalayas. All rights reserved. Built with Untitled UI. Logos provided by Logo.dev. Voice powered by Elevenlabs Grants
Join the remote work revolution
Join over 100,000 job seekers who get tailored alerts and access to top recruiters.
@serhiikovalov
Full-stack developer specializing in scalable SaaS and blockchain e-commerce solutions.
I am a full-stack software developer with over 8 years of hands-on experience building scalable SaaS and blockchain e-commerce products using JavaScript, Python, and Go. I design and implement robust back-end and front-end systems, migrate monoliths to microservices, and build event-driven architectures that handle massive data flows.
My work spans startups and agencies where I shipped high-throughput web applications, improved test coverage by 70%, and led teams to enhance performance and reliability—achieving threefold performance improvements and 99.99% uptime for legacy platforms.
I have experience with AWS, S3-compatible and Web3 storage, Stripe billing integrations, TDD, and mentoring developers. I focus on delivering production-ready features, secure APIs, and architectures that scale for enterprise usage.
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!

Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!

Work history, roles, and key accomplishments
Skello
Dec 2024 - Jul 2025 (7 months)
Owned back-end and front-end development, led migration from a monolith to microservices, and built event-driven solutions (Kinesis, SQS) on AWS to handle massive data loads.
LearnLenny
Jul 2023 - Dec 2024 (1 year 5 months)
Built and maintained back-end and front-end of an AI learning platform, delivering core features and platform stability during product development.
Outsight.ai
Oct 2023 - Nov 2024 (1 year 1 month)
Delivered web features for high-volume spatial surveillance applications, applied TDD and event-driven patterns to process massive people-flow data reliably.
Coldstack/Petabox
Nov 2021 - Jul 2023 (1 year 8 months)
Developed secure web APIs and S3-compatible Web3 storage features, maintained finance modules (billing via Stripe and Web3) and contributed to product architecture.
JetRuby Agency
May 2019 - Sep 2021 (2 years 4 months)
Supported and developed e-commerce SaaS products, improved performance and reliability (3x performance gain, 99.99% uptime) and mentored junior developers while leading a team of three.
Constant Solutions
Jan 2017 - Apr 2019 (2 years 3 months)
Built and maintained modules for cryptocurrency exchange solutions, focusing on communication modules (chats, WebSockets, bots) and internal CRM integrations.
Degrees, certifications, and relevant coursework
Bachelor in Computer Science, Computer Science
2018 - 2019
Completed a Bachelor in Computer Science program during 2018–2019.
Bachelor in Computer Science, Computer Science
2013 - 2017
Completed a Bachelor in Computer Science focusing on core computer science principles and software development.
Software and tools used professionally
You can contact Serhii and 90k+ other talented remote workers on Himalayas.
Message SerhiiGuillaume Jacquart
Technical Team Lead, AB Tasty
David Ng
Full Stack Developer, Grid Connect
Adrian Jin
Senior Full Stack Engineer, Bloomscape
Benjamin BEGUIN
Lead Full Stack Engineer, Sanofi Digital Accelerator
Victor Fontaine
Professional Freelancer, Freelance
Abbass Sharara
Staff Full stack Engineer, LovedByMen LTD
Muhammad Alam Khalid
Full Stack Developer, PEL
Walid Ali-sahraoui
Full Stack Developer, Elyonpay
Anas Mebarki
Senior Software Engineer, Careo AI
Alam Khalid
Senior Software Engineer, DevSinc