Open to opportunities

Null Soul

@nullsoul

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Software engineer specializing in Node.js and Go microservices with performance focus.

Moldova

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What I'm looking for

I seek backend or full-stack roles focused on scalable microservices, performance optimization, TDD, strong engineering practices, mentorship opportunities, and measurable impact on system reliability and speed.

I am a forward-thinking software engineer with strong experience building and optimizing Node.js and Go microservices, advocating Clean Architecture and TDD. I focus on measurable performance improvements and reliable APIs.

I have improved service throughput and reduced query latency through profiling, SQL indexing, and backend refactors, and I’ve sped up report generation with Go-based REST APIs.

I champion testing and quality: I introduced Jest and Cypress pipelines, adopted TDD practices, and reduced bug leakage and regression rates across teams. I also standardize architecture to reduce refactor effort and onboarding time.

I enjoy mentoring, producing clear technical documentation, and driving pragmatic tooling and process changes—Docker optimizations, ESLint rules, and reusable npm packages—to increase team productivity and system reliability.

Experience

Work history, roles, and key accomplishments

Current

Middle Node.js Engineer

Current

Self Employed

Nov 2023 - Present (1 year 11 months)

Improved service throughput by 35% using modular NestJS microservices and concurrency tuning; reduced query latency by 40% via SQL schema normalization and backend refactoring. Standardized clean architecture to cut refactor effort 25% and produced documentation to accelerate onboarding.

NestJS TypeScript Pprof Microservices Performance Optimization React Documentation

Middle Node.js Developer

N-iX

Dec 2021 - Nov 2023 (1 year 11 months)

Accelerated report generation by 40% with Go REST APIs and profiling-driven concurrency; reduced production bugs 30% by introducing Jest and Cypress pipelines and modularized services to cut onboarding time 20%.

Go REST APIs Jest Cypress Docker Optimization DDD CI CD Profiling

Junior Node.js Developer

Self Employed

Apr 2021 - Dec 2021 (8 months)

Halved regression bugs by implementing TDD across travel microservices and designed fault-tolerant services with circuit breakers and retries to improve peak-time availability. Delivered an npm package that reduced UI test project setup time by 50%.

TDD Jest Cypress Microservices NPM Testing Automation Fault Tolerance

Junior PHP/Node.js Developer

RexSoft

Sep 2017 - Apr 2021 (3 years 7 months)

Improved query response time 30% via ORM optimization and indexing and cut production defects 35% by integrating UI automation testing; extended a Python PDF package to reduce generation time 20%.

PHP Cypress Python REST APIs Testing Performance Tuning