Open to opportunities

Darvin Martin

@darvinmartin

Message

I’m a senior full-stack engineer scaling web apps with JavaScript, TypeScript, Python.

United States

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What I'm looking for

I’m looking for a senior role where I can build and scale secure production web apps, lead microservices and observability, and ship AI-enabled features. I want a team that values experimentation, strong CI/CD, and pragmatic delivery.

I’m a senior full-stack engineer with 10+ years of experience designing, building, and scaling production-grade web apps. I’ve built Ecommerce, SaaS, and Healthcare applications, bringing both senior engineering depth and business insight from SME and startup experience.

At WEBSKITTERS TECHNOLOGY SOLUTIONS, I deliver high-performance platforms using React, NestJS (Node.js), TypeScript, and MongoDB—deployed on AWS. I’ve improved scalability and efficiency by designing and implementing microservices with React, FastAPI, PostgreSQL, Kafka, and RabbitMQ, and I add observability with DataDog.

I also bring modern AI capabilities into real products by orchestrating LLM models in web apps using OpenAI and LangChain, plus I run experimentation and A/B testing to evaluate product changes and user behavior. I strengthen delivery with CI/CD pipelines (GitHub Actions), production issue resolution with Jira workflows, and AI-assisted coding tools to improve code quality across backend and frontend.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Webskitters Technology Solutions

Aug 2021 - Present (4 years 10 months)

Designed and set up scalable web infrastructure with Next.js, delivering a high-performance platform using React, NestJS, TypeScript, and MongoDB deployed on AWS. Built microservices with React, FastAPI, PostgreSQL, Kafka, and RabbitMQ, added monitoring via DataDog, and implemented AI-powered LLM workflows with OpenAI and LangChain.

Next.js React NestJS TypeScript MongoDB Microservices fastAPI PostgreSQL Kafka Datadog

Full Stack Engineer

Kitrum

Sep 2018 - Jul 2021 (2 years 10 months)

Built and evolved a full-stack web application prototype using Django (Python) with Stripe, plus Next.js and Tailwind CSS for the UI. Developed scalable backend services with NestJS, PostgreSQL, and Elasticsearch, created RESTful APIs, and added automated end-to-end testing with Playwright.

Django Stripe Next.js Tailwind UI NestJS PostgreSQL Elasticsearch REST APIs Playwright End To End Testing

Web Developer

Kanda Software

Aug 2014 - Aug 2018 (4 years)

Developed employee/customer management dashboards using JavaScript, SQL, HTML, and CSS, and implemented real-time UI updates via event-driven microservices. Built full-stack applications from scratch with React, Redux, Redis, Node.js, Express, and GraphQL, and supported reliable deployments using Docker and Kubernetes.