Senior Full Stack Java Engineer
I build backend systems that scale — and the AI that makes them smarter. 14 years delivering enterprise Java applications across KPN, ABN Amro, FedEx, and TomTom — full stack with Java, Angular, Kafka, Docker, and AWS.
I'm a Java engineer based in Amersfoort, Netherlands, with over 14 years delivering enterprise-grade backend applications. My clients have included KPN, ABN Amro Bank, FedEx Express, TomTom, ASML, Siemens, Bharti AXA, and Delta Airlines — organisations where reliability and uptime are non-negotiable. I'm currently a backend engineer on Tangelo B.V.'s enterprise document management platform for financial communications.
My core is Java 17 + Spring Boot 3 + microservices, wired into cloud-native infrastructure on Azure AKS. I've led architecture teams at FedEx, designed Kafka-driven event pipelines, and built CI/CD practices across Angular frontends and Docker-based deployments.
I hold a BE in Computer Science from JSS Academy (Visveswaraya Technological University, 2011). After a decade building foundations in India across Cognizant, Siemens, and Capgemini, I moved to the Netherlands and have been delivering complex backend applications for Dutch enterprise ever since.
OpenAPI/Swagger specs and Kafka topic schemas are the first deliverable. Every team member knows the boundary before implementation starts.
Circuit breakers, dead-letter queues, retry policies. I've seen what happens without them at FedEx logistics scale — you don't get a second chance.
Docker from day one, Kubernetes manifests alongside the service, and a Jenkins/Azure DevOps pipeline before the first PR is merged.
JUnit 5 + Mockito coverage and SonarQube gates in every pipeline — not left to the honour system or sprint end reviews.
From event-driven backends to containerised Azure deployments — 14 years across the full delivery pipeline.
Architecture-first. Observable from day one. Built to survive real production loads.
Problem: A large-scale telecom backend with tightly coupled services, slow release cycles, and insufficient observability — unable to keep pace with KPN's product delivery velocity.
Designed and delivered Spring Boot 3 microservices using Java 17, Hibernate/JPA, and REST APIs for KPN's core telecom backend. Integrated services via Apache Camel and ActiveMQ, containerised with Docker, and deployed on Kubernetes with full CI/CD automation and centralised observability.
Problem: FedEx NL needed a unified, observable API integration layer connecting internal logistics microservices with full auditability and deployment automation.
Led the microservices design team implementing an API Gateway with Kafka-based event integration. Designed scalable DB schemas, authored comprehensive Swagger docs, and built Docker + AKS deployment with Gradle CI/CD automation.
Problem: ABN Amro needed secure REST backend services powering a Microsoft Teams-integrated internal banking tool, with full deployment automation.
Built REST services for Microsoft Teams integration connected to a Vue.js frontend. Implemented Azure DevOps CI/CD pipelines end-to-end for automated build, test, and deployment.
From Cognizant India to Tangelo Netherlands — real enterprise delivery at every scale.
How I turned a single index.html into a live personal site on my own domain — using free GitHub Pages hosting and a first-year domain deal that cost less than a coffee.
I wanted a personal site that actually looked like mine — not another templated portfolio buried in a PDF. So I built one: a single-page static site, dark/light themes, an EN/NL toggle, a fake terminal animation, and even a tiny rule-based chatbot that answers questions about my own career. All hand-written HTML, CSS, and vanilla JS — no framework, no build step.
Hosting: free, via GitHub Pages. Once the site was ready, I pushed it to a public GitHub repo and turned on Pages under Settings → Pages, deploying straight from the main branch. A few minutes later it was live at abhisheksa09.github.io/portfolio — no server to manage, no hosting bill, automatic HTTPS out of the box.
A domain, for less than a euro. abhisheksa09.github.io/portfolio works, but it's not exactly memorable. I registered abhisheksa.nl at Vimexx for €0.58 in the first year — a promo price; it renews at roughly €9.62/year including VAT from year two. Registration is year-by-year with no lock-in, so if I ever want to switch registrars or let it lapse, that's entirely my call.
Wiring the domain to GitHub Pages. The last step was pointing my new domain at the site. Every domain has a settings page where you tell it where to send visitors — so I updated mine to send abhisheksa.nl straight to GitHub's servers, and set www to redirect there too. Then in GitHub's own settings, I told it to expect traffic from abhisheksa.nl. GitHub double-checks that everything is pointed correctly, issues a free security certificate on its own, and once that's done the whole site loads securely — the little padlock in the address bar — from a domain I actually own.
The total bill: under a euro, and a couple of hours of patience while DNS propagated. Hosting, the SSL certificate, and the build are all free for as long as GitHub Pages stays free for public repos. If you're weighing whether a personal site is worth the hassle — it isn't much of one.
14 years building Java, Angular, Kafka, Docker and full-stack enterprise applications — now a Senior Java Developer at Tangelo B.V.
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