J
From Armenia
09:11 AM
(GMT+04:00)
$30/hr
or
$65,000/yr
Active 21 hours ago
Senior Full-Stack Engineer
Full-Stack Engineer
Available for hire
Years of experience
9+ years
Experience level
Senior
Available for
Full-time, Contract, Freelance
Available from
31 Jan 2026
I’m a passionate Full-Stack Engineer with over 9 years of experience turning complex ideas into reliable, high-quality software. I care deeply about building products that truly help users and make clients proud. I bring strong ownership, clear communication, and a problem-solving mindset to every project. Clients appreciate my consistency, speed, and ability to deliver measurable results under pressure. My focus is always on creating long-term value — not just finishing tasks, but helping every product reach its full potential.
My expected salary is $4,500–$6,000 per month, but it’s negotiable.
I can start work immediately. Telegram: @NevaSpark Email: @[email protected]
Skills
Languages
Employment History
Senior Full-Stack Developer at
Hillside IT Consulting Group
2022
-
2025
- Engineered and deployed 15+ full-stack web platforms, achieving 99.95% uptime and
supporting 500K+ monthly active users.
- Designed and implemented RESTful + GraphQL APIs handling 10M+ requests/day with sub-
50 ms response times.
- Architected modular front-ends using React, Next.js, and TypeScript, cutting development
cycle time by 35% through reusable FSD-based components.- Built and optimized backend microservices with Node.js, Python (FastAPI), and C#/.NET,
reducing average CPU usage by 28% under high load.
- Improved API latency by 42 ms and boosted throughput by 20% using async I/O and inmemory caching layers (Redis).
- Managed AWS/GCP infrastructure (ECS, Lambda, Cloud Run, Pub/Sub), lowering cloud costs
by 25% through autoscaling and IaC (Terraform).
- Created CI/CD pipelines with GitHub Actions + Docker, decreasing manual deployment effort
by 90% and ensuring zero-downtime releases.
- Integrated secure authentication (JWT, OAuth2, SSO) across 7 distributed systems, reducing
login-related incidents by 60%.
- Built real-time event processing via WebSockets/Kafka, enabling <100 ms updates for live
dashboards and chat systems.
- Designed optimized schemas and indexes in PostgreSQL + MongoDB, cutting query
execution time by 45% on large datasets.
- Delivered internal UI libraries and component kits reused across 10+ projects, improving
feature delivery speed by 30%.
- Developed advanced admin dashboards and analytics portals processing 1TB+ monthly data
for client insights.
- Collaborated with cross-functional teams (PM, Design, QA, DevOps), ensuring 100% on-time
delivery for all major client milestones.
- Conducted 150+ code reviews, enforcing SOLID and clean-code standards that reduced bug
density by 40%.
- Implemented full testing coverage (unit, integration, E2E) with Jest, Playwright, and Pytest —
boosting reliability to 90%+ coverage.
- Mentored 5 junior engineers, resulting in 2 internal promotions and measurable improvement
in code quality metrics.
- Led migration of legacy PHP/jQuery apps to modern TypeScript/React stacks, reducing tech
debt by 60%.
- Deployed centralized logging and monitoring (ELK, Prometheus, Grafana) cutting incident
resolution time from 2 h → 20 min.
- Implemented automated rollback and blue-green deployment strategies ensuring zero
production downtime.
- Collaborated directly with clients to define KPIs and SLAs, achieving 100% satisfaction across
20+ delivered projects.
- Authored comprehensive ADRs and system documentation that decreased onboarding time
for new developers by 50%.
- Spearheaded backend performance audits that improved average API response consistency
by >98th percentile
- Tech Stack: React, Next.js, TypeScript, Node.js, FastAPI, C#/.NET Core, PostgreSQL,
MongoDB, Redis, AWS (ECS, Lambda, RDS, S3), GCP (Cloud Run, Pub/Sub), Docker,Terraform, GitHub Actions, Kafka, WebSockets, ELK Stack, Prometheus, Grafana, Jest,
Playwright, Pytest, CI/CD, FSD Architecture, SOLID Principles.
Senior Backend Engineer at
Beyondsoft
2020
-
2022
- Designed, built, and maintained enterprise-grade backend systems serving 5M+ API requests
per day with 99.98% uptime.
- Architected microservices using Python (FastAPI) and Java (Spring Boot), improving
modularity and deployment flexibility across 12+ client projects.
- Optimized database queries and indexes in PostgreSQL and MySQL, cutting average query
latency by 55%.
- Implemented asynchronous processing pipelines (Celery, RabbitMQ, Kafka) reducing task
execution time by 40%.
- Developed internal API gateway and service registry enabling 10x faster service discovery and
cross-team integration.
- Introduced caching layers with Redis and Memcached, improving read performance by 2.3×
under high-traffic workloads.
- Collaborated with DevOps team to containerize all core services with Docker and deploy via
Kubernetes, reducing manual ops by 80%.
- Automated CI/CD workflows using GitLab CI, achieving consistent zero-error deployments
across multiple environments.
- Designed data ingestion pipelines handling hundreds of GBs daily, ensuring consistent ETL
reliability and schema evolution.
- Integrated OAuth2.0 and JWT-based security, achieving zero critical vulnerabilities in external
audits.
- Conducted backend performance profiling with Prometheus + Grafana, improving response
time consistency by 35%.
- Implemented structured logging and tracing (ELK + OpenTelemetry) to enable sub-minute
production issue triage.
- Led refactor of legacy monolith into microservice-oriented architecture, reducing deployment
time from 25 min → 4 min.
- Worked closely with frontend teams (React, Angular) to deliver optimized REST endpoints and
WebSocket channels.
- Mentored 4 mid-level engineers through code reviews and architecture sessions, improving
overall team velocity by 20%.
- Participated in sprint planning and backlog grooming, ensuring 100% feature delivery rate
within each iteration.
- Contributed to technical documentation and API specifications using Swagger/OpenAPI,
reducing onboarding time by 50%.
- Collaborated with clients in finance, e-commerce, and logistics domains to define system KPIsand scalability targets.
- Conducted automated unit and integration tests (Pytest, JUnit), maintaining 95%+ coverage
across key services.
- Championed adoption of SOLID and clean architecture principles, lowering code maintenance
overhead by 30%.
- Delivered multiple high-availability systems exceeding SLA targets by 15%, resulting in repeat
client engagements.
- Recognized internally for driving cross-project backend standardization, improving reusability
and security compliance.
- Tech Stack: Python (FastAPI, Celery), Java (Spring Boot), Node.js, PostgreSQL, MySQL,
Redis, Kafka, RabbitMQ, Docker, Kubernetes, GitLab CI/CD, AWS (ECS, S3, RDS), ELK Stack,
Prometheus, Grafana, OAuth2.0, OpenAPI/Swagger, SOLID Architecture.
Full-Stack Developer at
CNT Management Consulting
2016
-
2020
- Delivered 10+ enterprise web applications for clients in finance, logistics, and manufacturing
with 99.9% uptime and strong user adoption.
- Developed end-to-end features using React, Angular, and TypeScript on the frontend and
Node.js, Express, and Python (FastAPI) on the backend.
- Designed and optimized REST APIs handling 2M+ daily requests with average latency under
70 ms.
- Built role-based authentication and access control (JWT, OAuth2), reducing unauthorized
access incidents by 85%.
- Implemented data-driven dashboards and analytics modules that improved client decisionmaking speed by 40%.
- Integrated third-party APIs (Salesforce, SAP, and internal ERP systems), automating manual
workflows and saving 400+ staff hours/month.
- Created reusable UI component libraries with shared design tokens, accelerating front-end
delivery by 25%.
- Designed efficient SQL and NoSQL data models (PostgreSQL, MongoDB), improving query
performance by 50%.
- Implemented server-side caching and CDN optimization, reducing page load time by 1.8 s on
average.
- Collaborated with DevOps to containerize projects using Docker + Jenkins, enabling
consistent cross-environment builds.
- Automated deployment pipelines with CI/CD, cutting release time from 1 hour → 10 minutes.
- Introduced automated testing (unit, integration, and regression), achieving 88% code coverage
across key modules.
- Participated in architecture reviews and sprint planning, ensuring 100% on-time delivery of allmajor milestones.
- Supported data visualization and reporting using D3.js and Chart.js, boosting user
engagement by 30%.
- Led migration from legacy PHP systems to modern TypeScript/Node.js stack, reducing
maintenance cost by 40%.
- Collaborated directly with clients to define scope, UX flows, and KPIs, maintaining 95% client
satisfaction.
- Provided mentorship to junior developers and established clean-code guidelines, lowering
post-release defect rate by 35%.
- Implemented centralized logging and monitoring (ELK + Prometheus), improving issue
detection speed by 60%.
- Tech Stack: React, Angular, TypeScript, Node.js, Express, FastAPI, PostgreSQL, MongoDB,
Redis, Docker, Jenkins, AWS (EC2, S3), D3.js, Chart.js, ELK Stack, Prometheus, OAuth2,
JWT, CI/CD, Clean Architecture, SOLID Principles.
Education
Bachelor of Computer Science at
Beijing Technology and Business University
2011
-
2016
