02/13/2026 updated
100 % available
Senior Full-stack & Mobile Developer | AI Expert
Copenhagen, Denmark
Only remote
Bachelor of Science: Computer ScienceAbout me
Highly motivated and detail-oriented professional with a strong background in problem-solving. Good team player as well as good at working alone; very sociable. hardworking and responsible for projects and tasks. Eager to learn a lot of new information and skills every single day.
JavaScriptPHPPrivate NetworksApplication Programming Interfaces (APIs)Agile MethodologyArtificial IntelligenceAmazon Web ServicesTechnical SupportHTML5Unit TestingMicrosoft AzureCascading Style Sheets (CSS)Cloud ComputingCode ReviewComputer Programming
Frontend: React, TypeScript, Next.js, Angular, Vue.js, JavaScript, HTML5, CSS3, TailwindCSS, Material-UI, Responsive Design
Backend: Python (FastAPI, Django, Flask), Node.js, NestJS, Express.js, RESTful APIs, GraphQL, Microservices, WebSocket
AI & Machine Learning: OpenAI API, Anthropic Claude API, LangChain, RAG Systems, Vector Databases (pgvector, Pinecone), Text Embeddings, Prompt Engineering, Agentic Frameworks
DevOps & Cloud: Docker, Kubernetes, Azure (Functions, DevOps, Container Services), AWS, Terraform, CI/CD, GitHub Actions, Nginx
Database & Caching: PostgreSQL, MongoDB, Redis, Elasticsearch, RabbitMQ, Kafka, Message Queues, TypeORM, Prisma
Observability & Monitoring: OpenTelemetry, Datadog, Prometheus, Grafana, CloudWatch, ELK Stack, Distributed Tracing
Testing & Security: Jest, Cypress, Playwright, Unit Testing, Integration Testing, Code Reviews, Agile/XP Practices
Integration & Monitoring: Stripe, PayPal, SendGrid, Twilio, Datadog, Prometheus, Grafana, CloudWatch, OpenTelemetry, ELK Stack
Security & Compliance: OAuth 2.0, JWT, RBAC, SOC 2, GDPR, Data Encryption
Experience
Professional experience5 - 10 years
Freelancer since2021
Languages
EnglishNative speaker
Project history
Tech Stack: React, JavaScript, HTML5, CSS3, Node.js, Express.js, PostgreSQL, Git, Jira
• Developed responsive UI components using React, TypeScript, and modern JavaScript while building backend API endpoints with Node.js and Python for internal operations.
• Engineered secure Node.js/Express API endpoints for financial processing, integrating strict schema validation and RESTful design patterns to support scalable frontend requirements.
• Participated in daily code reviews and paired programming sessions, accelerating learning of enterprise development practices including testing, version control workflows, and Agile methodology.
• Managed PostgreSQL database operations including query optimization, backup procedures, and monitoring, while contributing Python scripts for data processing and automation tasks.
Tech Stack: React, Node.js, NestJS, TypeScript, PostgreSQL, Redis, Docker, Kubernetes(EKS), AWS(EC2, RDS, S3, CloudWatch), GitHub Actions, Terraform, Datadog, OpenAI, LangChain
• Took ownership of platform architecture serving 2,000+ active users processing 500 daily API requests on Azure and AWS, maintaining 99.9% uptime and sub-250ms response times through microservices design and observability
• Spearheaded migration from legacy monolith to containerized microservices on Kubernetes, implementing Docker containerization and Terraform IaC that cut monthly Azure/AWS costs by 35% while handling 10x traffic growth
• Built AI-powered support system using FastAPI, LangChain, and OpenAI API with RAG architecture and vector embeddings, deflecting 80% of support tickets and reducing response time from 6 hours to under 30 minutes
• Implemented event-driven architecture using RabbitMQ and Kafka for asynchronous processing, designing message queue patterns that improved system resilience and enabled seamless scaling during peak loads.
• Championed TypeScript adoption across the codebase and introduced systematic testing practices using Jest and Cypress, bringing test coverage from 22% to 85% and helping the company successfully pass SOC 2 audit with zero critical security findings.
• Redesigned deployment workflow by implementing automated CI/CD pipeline, reducing release process from 45 mins to 6 mins, enabling teams to ship bug fixes same-day instead of waiting for weekly releases.
Tech Stack: React, JavaScript, HTML5, CSS3, Node.js, Express.js, PostgreSQL, Git, Jira
• Developed responsive UI components using React, TypeScript, and modern JavaScript while building backend API endpoints with Node.js and Python for internal recruitment platform.
• Built backend API endpoints with Node.js and Express.js for internal recruitment platform, implementing data validation, error handling, and CRUD operations while gaining hands-on experience with REST API design and database interactions.
• Participated in daily code reviews and pair programming sessions with senior team members, accelerating learning of enterprise development practices including testing, version control workflows, and Agile methodology.
• Managed PostgreSQL database operations including query optimization, backup procedures, and monitoring, while contributing Python scripts for data processing and automation tasks.