Sergei Kabuldzhanov sergeikabuldzhanov

About Me

Just ship it.

Comet Tabs - Reinventing Browser Tab Management (Solo Project)
- Engineered a browser extension allowing users to filter tabs & browser history with on-device semantic search (React, Vite, Transformers.js using TaylorAI/bge-micro-v2).
- Developed a custom high-performance virtualized list that handles hundreds of thousands of items, maintaining stable 60FPS scrolling & filtering, even under a 4x CPU throttle.
- Focused on delivering a fast, intuitive UI for a common browser pain point.
- Demo: https://www.youtube.com/watch?v=l_sAelF1FRE
- Project Link: https://github.com/sergeikabuldzhanov/comet-tabs

Experience Highlights:

Sunstone Credit (Full Stack Software Engineer, Sep 2021 - Present)

Engineered the primary client-facing SPA for credit applications, prioritizing security and banking partner standards.
Spearheaded CI/CD pipeline development (Github Actions, Cypress, Jest), doubling the release rate.
Built internal tools for credit scoring & loan underwriting using Next.js, Prisma, and PostgreSQL.
Integrated key partner APIs (Plaid, Equifax), boosting credit application processing speed by 50%.
Automated Salesforce workflows to enhance underwriter efficiency.

LastCallMedia (Full Stack Software Engineer, May 2021 - Nov 2021)

Architected and implemented robust End-To-End, load, and integration test suites (Cypress, Playwright, Artillery).
Optimized CI/CD pipeline, slashing test run times and build step durations by 75% by prioritizing critical tasks.
Developed internal tools for key metric visibility using AWS ECS, Cloudwatch, CloudMetrics, and NewRelic.
Core Tech: TypeScript, Node.js, Cypress, AWS, Docker, React.

Bloom Institute of Technology (Section Lead, Aug 2020 - Oct 2020)

Led and mentored a team of over 30 individuals in daily projects and rigorous code reviews.
Facilitated daily whiteboarding sessions, significantly improving students' problem-solving capabilities.

Facepass LLC (Technical Writer, Oct 2018 - May 2019)

Languages & Frontend: JavaScript, TypeScript, React.js, Next.js, Redux.js, Node.js, Vite, Tailwind CSS
AI/ML: Transformers.js
Backend & Databases: Python, Go, PostgreSQL (SQL), NoSQL, REST APIs, GraphQL
DevOps & Cloud: AWS, Docker, CI/CD (GitHub Actions)
Testing: Cypress, Playwright, Jest, End-to-End Testing, Software Testing
Design & Tools: Figma, Agile
Other: Git, Performance Optimization, Browser Extensions (Manifest V3)

Bloom Institute of Technology (prev. Lambda School) - Bootcamp, Software Engineering
Moscow National Nuclear Research University MEPhI - Bachelor's, Theoretical and Applied Nuclear Physics