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Full-Stack Engineer | Full-Time & Contract / B2B
TypeScript • React / Next.js • Node.js / NestJS • Cloud, AI & RAG Delivery
Full-Stack Engineer (5+ years) delivering production web platforms end-to-end in both full-time and contract/B2B engagements. I build with React/Next.js, Node.js/NestJS, PostgreSQL/Prisma, REST/GraphQL, AWS, and production AI patterns including RAG pipelines with pgvector. Strong focus on modular architecture, secure integrations, observability, and CI/CD. Typical outcomes: ~40% workflow automation and ~30% faster deployments.
Engagement
Full-Time / Contract / B2B
Delivery
Architecture -> CI/CD -> Ops
Stack
React/Next.js + Node/NestJS
Location
Cluj-Napoca, RO (Remote/Hybrid)
I collaborate with teams in full-time employment roles and contract/B2B engagements (full-time, part-time, or project-based). I provide reliable TypeScript delivery across frontend, backend, cloud, and AI-enabled systems with clear milestones, predictable execution, and production-grade quality standards.
From requirements and architecture to implementation, testing, CI/CD, and production support. I deliver TypeScript products with predictable milestones and measurable business outcomes.
Design and implementation of modular backend systems with REST/GraphQL APIs, clear boundaries, and scalable patterns for microservices-oriented environments.
AWS workloads (Lambda, ECS Fargate, S3, RDS, CloudWatch), Dockerized services, IaC with Terraform, and automated CI/CD pipelines for safer and faster releases.
Secure auth with OAuth2/JWT, webhook verification and idempotency, rate limiting, validation, secrets management, and practical OWASP-aligned protections.
Stripe subscriptions and credits, resilient webhook handling, and background processing using Redis/BullMQ with retries/backoff and real-time progress updates.
Production AI features with OpenAI and Whisper, prompt engineering, RAG systems with pgvector retrieval, structured outputs, and privacy-aware workflows (including PII redaction) integrated into real products.
Production-ready technologies and engineering practices I use to deliver reliable B2B products.
Core Stack
Backend & Architecture
Cloud & Delivery
AI & Automation
A curated set of production engagements focused on delivery, reliability, and measurable business outcomes.
Built and launched an AI-powered SaaS for meeting transcription and contract analysis (public beta). Implemented contract risk analysis (11 clause categories), sentiment signals, and action-item extraction using OpenAI GPT-4o. Added a global RAG chat system using pgvector, enabling contextual answers from previously uploaded and analyzed files. Added production observability with Sentry (errors + performance), structured logs, and actionable alerts. Implemented secure authentication (JWT/cookie-based, Google OAuth, beta access control) and hardened APIs with rate limiting, validation, and secure webhook handling (idempotency). Redis-backed BullMQ for background jobs (email delivery, transcription pipeline, document analysis) with Server-Sent Events for real-time progress updates. Whisper-based transcription with automatic PII redaction for GDPR compliance. Stripe subscriptions, metered usage, and webhook-driven billing with operational tooling for reliable processing.

Contributed to an enterprise platform for managing guaranteed loan portfolios backed by EU programs and internal funds, delivered in a regulated production environment. Built and maintained a modular, role-oriented UI with clear domain separation (EU Funds, Internal Funds, Collections & Payments, Administration). Implemented workflow automation for origination and repayment tracking, reducing manual workload by ~40%. Strengthened reliability with automated tests (Jest) covering critical flows and edge cases.

Led AI integration across React.js frontend teams, improving productivity and reducing repetitive coding tasks by 30%, positioning the company as an early adopter of AI-driven development. Developed a custom demo app and presentation showcasing Copilot-assisted coding, Figma-to-code automation, and interactive AI use cases for React developers. Conducted technical workshops and presentations to accelerate adoption and improve code quality across multiple teams. Impact: Faster development cycles, improved maintainability, and enhanced team efficiency.

Built a responsive web platform for cost negotiation, card management, and campaign/product details, optimized for mobile and desktop usage. Implemented a cost negotiation interface with expandable detail views and predictable UI state handling for complex workflows. Developed card management flows (add/manage cards) and integrated backend endpoints using Node.js/Express. Added automated test coverage with Jest and React Testing Library to improve reliability and prevent regressions. Delivered in enterprise environment with production releases.
Key education and delivery roles across enterprise teams and contractor B2B engagements.
Technical University of Cluj-Napoca
📍 Cluj-Napoca, Romania
Faculty of Automation and Computer Science. Graduated with Software Engineer diploma.
Transilvania Bank
📍 Cluj-Napoca, Romania
Built automated UI tests with Selenium WebDriver + SpecFlow and contributed unit/integration tests in C#. Collaborated with QA and development teams to resolve defects and improve product reliability.
Transilvania Bank
📍 Cluj-Napoca, Romania
Owned delivery of features across multiple enterprise React/Next.js + TypeScript + Node.js/NestJS/Express.js applications in a regulated environment, from requirements to release and production support. Contributed to modular frontend architecture with reusable components and shared UI patterns for forms, tables, and complex domain views. Worked on backend services in a microservices-based environment, contributing to API integrations, domain workflows, and reliable inter-service functionality. Increased release confidence with automated tests (Jest + Testing Library) for critical flows. Improved Jenkins/GitHub Actions CI/CD pipelines, cutting deployment time by ~30%.
Full-Stack Delivery
📍 Remote
Delivered B2B web solutions with clear milestones: requirements → implementation → automated tests → deployment → handover docs. Built Next.js/NestJS applications with PostgreSQL/MySQL, secure auth (OAuth2/JWT), and production observability (Sentry + structured logging). Designed backend services using modular and microservices-oriented patterns with reliable async processing via Redis/BullMQ (retries/backoff) and real-time progress via SSE/WebSockets. Cloud delivery on AWS with containerized services (Docker), repeatable CI/CD, IaC via Terraform, environment/secret management, and production monitoring. Stripe subscriptions/credits + webhooks.
Derisqo
📍 Remote
Built and launched an AI SaaS for meeting transcription and contract analysis, including Stripe billing (subscriptions/credits + webhooks). Designed and shipped the end-to-end platform: Next.js frontend + NestJS services/API, deployed on AWS. Architected the backend using microservices-oriented patterns for transcription, contract analysis, billing, and async processing. Provisioned AWS infrastructure using Terraform (IaC) and automated releases via CI/CD; implemented serverless workloads on AWS Lambda with CloudWatch. Built resilient background processing with Redis/BullMQ (ElastiCache/MemoryDB): retries/backoff, idempotency, and real-time progress via SSE. LLM-based contract risk analysis (11 clause categories), action items + sentiment signals (OpenAI GPT-4o). Whisper transcription with automated PII redaction. Live: https://derisqo.rbx-soft.tech/
Certifications and formal training that support delivery quality and engineering discipline.

Meta via Coursera
March 2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024

Meta via Coursera
2024
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