Open to opportunities

Kevin Markham

@kevinmarkham

Message

I am a Senior Full Stack Engineer delivering scalable, AI-driven web and e‑commerce solutions.

Ireland

Message

What I'm looking for

I am seeking senior full-stack roles at remote-friendly companies where I can lead teams, build scalable cloud-native platforms, integrate AI, and drive automation and performance gains.

I am a Senior Full Stack Software Engineer with 8+ years building scalable web and mobile platforms across e-commerce, fintech, insurance, and software agencies.

I specialize in JavaScript/TypeScript and Python, and design cloud-native systems on AWS and GCP—leading microservices, serverless functions, and Kubernetes deployments to improve scalability and reliability.

At OnBuy I led the development of a high-performance e-commerce platform, implemented Kafka event-driven architecture, Redis caching, ELK centralized logging, Terraform infrastructure, and CI/CD pipelines—delivering a 40% reduction in processing time and achieving 70%+ overall test coverage with 100% on critical modules.

I mentor engineers, integrate AI solutions (LLMs and RAG) into products, and prioritize automation, performance optimization, and collaborative remote delivery to solve complex business challenges.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Software Engineer

OnBuy

Dec 2023 - Jul 2025 (1 year 7 months)

Led development of a scalable e-commerce platform using Node.js and Python with event-driven Kafka microservices, AWS Lambdas, and payment integrations (Stripe, Adyen, PayPal), implemented RAG-based LLM recommendations and testing achieving 70%+ coverage and 100% for critical modules while reducing processing time by 40%.

Node Python React Next.js TypeScript Kafka AWS Kubernetes Terraform PostgreSQL

Full Stack Developer

Feather

Jun 2021 - Dec 2023 (2 years 6 months)

Built scalable insurance platform APIs with Nest.js and Nx monorepo, led migration from Vue.js to React, implemented serverless automations (AWS Lambda), secure auth (JWT, 2FA, LDAP, OTP), and improved front-end performance and observability with Storybook, Datadog, and Sentry.

Nest TypeScript React AWS Lambda EC2 JWT Storybook Datadog Sentry

Software Developer

Upcons

Apr 2017 - May 2021 (4 years 1 month)

Built and launched web and SaaS applications for fintech and e-commerce clients using JavaScript/TypeScript and Python, delivered MVPs, integrated REST and GraphQL APIs, and improved front-end performance with AWS CloudFront while maintaining ~70% test coverage.

JavaScript TypeScript React Angular Python REST GraphQL Cloudfront Jest ESLint

Education

Degrees, certifications, and relevant coursework

Technological University Dublin

Bachelor's degree, Computer Science

2013 - 2017

Completed a Bachelor's degree with coursework in programming languages, data structures and algorithms, databases, data science, AI, and software engineering.