# Aleksei Sosin

> QA Engineer | 2+ yrs in SaaS & eCommerce | SQL, API Testing, Postman | Manual & End-to-End QA

Location: New York, New York, United States
Profile: https://flows.cv/alekseisosin

2+ years of experience testing high-traffic SaaS and eCommerce products across web and mobile.
 Executed end-to-end QA for 3+ concurrent projects with 100k+ users, designing 180+ test cases per
release and validating 30+ REST APIs, reducing critical defects in production.
 Improved mobile and cross-browser stability, cutting repeat defects by 15–20%, and streamlined bug
reporting in Jira/Xray, reducing clarification cycles by 30%.
 Experienced in Agile teams, collaborating with automation engineers on Selenium/Cucumber workflows
to ensure release readiness and minimize production risk.


Testing Types: Functional, Regression, Smoke, API, UX/UI, Mobile, Cross-Browser, End-to-End (E2E)
Web & Frontend: HTML, CSS, JavaScript, XML, JSON
Database & Backend: SQL, MySQL, HeidiSQL
Test Automation: Selenium WebDriver, Cucumber (BDD), IntelliJ IDEA, Git, GitHub
API & Web Services: RESTful API, Postman, Swagger/OpenAPI, Newman
Testing Tools: Chrome DevTools, Android Studio (ADB), Charles Proxy, Figma
Test Management & Defect Tracking: Jira, Xray, Bugzilla
Methodologies: Agile, Scrum, Kanban, SDLC

## Work Experience
### Software QA Engineer @ Westvalleysoft
Jan 2023 – Present | Sunnyvale, CA
Perform manual testing for multiple web and mobile software projects within an Agile team, collaborating closely with developers and product managers.

- Analyze requirements, create and maintain comprehensive test documentation using Confluence.
- Design, develop, and execute manual test cases in Jira/Xray, including smoke and regression testing for each build.
- Support test automation by contributing to Cucumber scenarios with Selenium WebDriver and a Java-based framework in Git/GitHub.
- Create and execute RESTful API tests via Postman, automating collections with JavaScript.
- Validate frontend and backend data integrity with SQL/MySQL queries.
- Conduct cross-platform mobile testing for Android, including log analysis with ADB.
- Track and verify defect resolution in Jira, ensuring high-quality releases.
- Participate in product design reviews, providing QA input on functional requirements, wireframes, schedules, and potential issues.

### YouTube Channel Owner & AI Content Creator @ Tugodoom_Pictures
Jan 2021 – Jan 2023
AI-driven content studio producing 50+ high-quality videos with structured QA workflows that improved
viewer engagement by 17%.
- Built and validated an end-to-end AI content pipeline (script → assets → edit → render → publish) with
acceptance criteria and reusable QA checklists to ensure consistent quality.
- Performed full workflow verification across AI tools and publishing steps, catching defects before release
(A/V sync, artifacts, format/compression, metadata, upload issues).
- Implemented structured pre-publish QA reviews and change tracking, reducing rework and preventing
publish-blocking failures.
- Standardized templates and version-controlled prompts/assets to make outputs reproducible and faster
to troubleshoot; reduced average production time by 4 hours per video.
- Monitored post-release performance in YouTube Studio and iterated using data-driven analysis; improved
key KPI (CTR/retention/avg view duration) by 17% across 52 published videos.

### UI/UX, Designer @ AIC
Jan 2019 – Jan 2021
Design studio delivering end-to-end web and mobile UI/UX solutions with usability testing and
developer-ready specifications to ensure seamless product implementation.
- Delivered end-to-end website design concepts in Figma (ideation, wireframes, prototypes, UI, visual
design, micro-animations), producing developer-ready specs and assets for implementation.
- Conducted structured design reviews and usability testing to validate flows, catch UX defects early, and
ensure quality against requirements and acceptance criteria.
- Partnered with developers, PMs, and stakeholders to align designs with functional requirements, clarify
edge cases, and prevent rework during build and release.
- Maintained design versioning and documentation (specs, components, interaction states), ensuring clear
handoffs and traceability throughout the development lifecycle.


## Education
### Bachelor of Law in Law, General
Modern Humanities Academy
Jan 2007 – Jan 2011


## Contact & Social
- LinkedIn: https://linkedin.com/in/aleksei-sosin

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Source: https://flows.cv/alekseisosin
JSON Resume: https://flows.cv/alekseisosin/resume.json
Last updated: 2026-04-01