Java · Spring · TDD
Software Engineer
Java and Spring, built test-first.
I work mainly on backend systems in Java and Spring Boot, deployed on Kubernetes and Google Cloud Platform. Away from work I build small apps that each show one idea, and write about what I learn.
Bournemouth, England.
01 · Work
Small, complete projects, each built test-first to show one idea.
A learning project: moving from controller-service-repository habits to a hexagonal design, one failing test at a time. Each layer is a Maven module that lists only what it may depend on, so an inward import from the domain is a compile error, not a review comment. The domain is built and the application layer has started; the REST API, database and Spring Boot application are planned.
A Spring Boot REST API for searching flights, built test-first with hexagonal architecture. The domain and application code is plain Java; all framework code (Spring, JPA, REST) sits outside and depends inward, never the other way. Java 21, Spring Boot 3.4, with CI on GitHub Actions.
A banking application split into four Spring Boot microservices: a gateway as the single entry point, and account, card and loan services, each with its own PostgreSQL database. Runs on Kubernetes, with GitHub Actions workflows to build and deploy each service, and an observability stack (Prometheus, Grafana, Loki and Tempo) for metrics, logs and traces.
An OAuth2 resource server and client with Spring Boot, built test-first and run end to end with Docker Compose. The article series below follows this code.
Data migration from NoSQL to SQL using Spring Batch.
Website for Thia Glass Works: a Next.js application with a product catalogue, admin panel and PDF catalogue.
02 · Open source
A selection of the merged pull requests in libraries I use.
ProtobufDecoder releases the buffer of a partly read message when the subscriber cancels, so pooled buffers no longer leak.
A Request built with a null body behaves like one with an empty body instead of throwing on first access.
An Accept-Charset header no longer decides how a String request body is decoded.
A web application in a directory such as foo.com deploys as one app, together with its properties file.
An ignored Arrays.copyOf result is reported, and so are discarded calls to pure methods of any class that uses assert.
Timestamps before 1970 format correctly; truncating division had produced negative nanoseconds and garbage seconds.
TypeUtils.containsTypeVariables and unrollVariables honour the owner type of a ParameterizedType, so Outer<T>.Inner resolves.
With multiple-uri-strategy always, a config server that answers with HTML no longer stops the client at the first URI.
All 46 contributions in 30 projects, with what each problem was and how it was fixed
126 more are in review: open pull requests on GitHub.
03 · Writing
A four-part series, each part with a working app.
04 · Experience
Jan 2023 to present · Bournemouth, England (remote)
Sep 2022 to Feb 2023 · Bournemouth, England
Oct 2021 to Sep 2022 · Salford, England
Dec 2018 to Sep 2020 · Mumbai
Aug 2018 to Dec 2018 · Vadodara, India
Jan 2017 to Jun 2017 · Pune, India
05 · Recommendations
From LinkedIn recommendations; names and context as shown there.
“Sharang has shown outstanding dedication as a Software Engineer. He has consistently gone above and beyond to understand the complexities of the Product platform, demonstrating a remarkable ability to quickly assess and address issues. Although being part of a different team, Sharang acted swiftly and effectively during critical incidents to reduce impact on our team's platform. I am confident he will continue to make a positive impact wherever he goes.”
“Sharang reported to me during his first year as a graduate software engineer. I have no doubt he will be a great success at whatever he sets his mind to. Sharang’s enthusiasm to learn and develop was consistent from day one. He took a proactive approach to his, and the team’s, development. He was a pleasure to mentor, and would be welcome back anytime.”
“Sharang has been an absolute joy to work with, technically curious, willing to jump in and try new things whilst always pursuing his thirst for learning. I found Sharang to be extremely outcome and delivery focused.”
06 · Background
2020 to 2021
MSc Computer Science (Distinction)
University of Southampton
Dissertation: Modern Serverless Web Application Architecture
2014 to 2018
BTech Computer Science and Engineering
Symbiosis Institute of Technology, Pune
07 · Contact
Open to hearing about interesting engineering roles.
sharang@sharanggupta.dev+44 7563 566755
Bournemouth, England