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Sergey B
@sergey_butsenko
FAANG Software Engineer, Resume Writing Professional for Tech Jobs
Ukraine
English, German, Ukrainian, Russian
About me
I’m an experienced FAANG Software Engineer, having worked at Google and Amazon. I’ve been through 100+ interviews, received 20+ tech job offers, and worked for 5 companies. I know exactly how the tech job market works in 2026 — what recruiters and companies are looking for.
I’ve helped dozens of friends design professional, ATS-friendly resumes and land their dream tech jobs. I’ve also optimized their LinkedIn profiles so that recruiters started reaching out to them.
Now, I’m an expert in tech resume writing and want to help more people hack the tech job market and secure multiple offers.
Skills
Sergey B
Offline •
Average response time: 1 hour
See my services
Online Coding Lessons
I will teach solving leetcode problems as a google software engineer
Resume Writing
I will professionally rewrite and edit your tech resume as a faang software engineer
Portfolio
Work experience
Software Engineer
Google • Full-time
Oct 2025 - Present • 7 mos
Working on Android Ecosystem for cars (AAOS)
Software Engineer
Consol Software • Full-time
Feb 2023 - Oct 2025 • 2 yrs 8 mos
Worked at a software company with over 250 employees across 3 countries. Contributed to the Remote Software Upgrade project, outsourced by BMW Group, which enabled BMW vehicle users to update their cars remotely via a mobile app. • Developed core features for the Remote Software Upgrade service using Java and Scala, enabling over 9 million BMW vehicles worldwide to receive software updates via the mobile app. • Maintained an internal web application for BMW user management using Node.js, TypeScript, and SQL. Using Docker and Kubernetes to perform integration tests, Junit, and Mockito for unit tests. Kept track of code quality and readability, code coverage above 85% and optimal usage of database, CPU, and server pods. • Automated build, test, and deployment workflows by integrating Jenkins into the CI/CD pipeline. Reduced release cycle time by 15% and minimized manual errors during deployments after switching to GitHub Actions.
Software Engineer Intern
Amazon • Full-time
Aug 2022 - Feb 2023 • 6 mos
Finished 6-month internship in a global technology company employing over 1,5 million people worldwide. Designed software components for the system that analyses over 50 million of user queries daily. • Designed user query tokenization component in Java using Natural Language Processing (NLP) that enabled the translation of tokens and comparing queries from different marketplaces. Improved the query matching rate by 15%. • Improved query match rate by an average of 18% by building translation scripts in Python and Scala. Deployed and tested the solution using AWS services, including S3, DynamoDB, Lambda, and ECS. • Collaborated with senior engineers to identify the most efficient solution. Analyzed query tokenization throughput daily, compared number of processed queries and latency, and picked Apache Lucene library as the best option.
5 Reviews
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Rating Breakdown
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1-5 out of 5 Reviews
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mrzoom
United States
I had a great problem solving session with Sergey. We worked through a couple iterations of a problem and I learned something new about the specific problem and my general approach. Also, he was able to bring insights about the interview process and what's expected.
Helpful?
rafafuentes4
Spain
Sergey provided an excellent mock coding interview that closely simulated the real experience. He gave clear, practical feedback and shared valuable tips that I'll use in my upcoming interviews. Highly recommend working with him if you're preparing for technical interviews.
Helpful?
jthakore1
United States
He was incredibly helpful. Really appreciate his assistance in evaluating my current performance. Will def hire again.
Helpful?
yash_kumar03
Canada
Helpful?
ivan00000
Poland
Sergey did an excellent job with my resume and helped me a lot. He thoroughly analyzed every part of it, gave me comprehensive feedback, and made my resume look great. I highly recommend him!
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