Senior Java Backend Software Engineer
First seen by Alion on Aug 29, 2026.
As a Senior Java Backend Software Engineer, you will be responsible for end-to-end ownership of complex features and system components. You will contribute actively to system and API design, participate in architecture discussions with well-formed opinions, and help raise engineering standards through code review and technical mentorship.
Your day-to-day will include :
- Build, maintain, and optimise Java services running event-driven processes and RESTful APIs on AWS infrastructure
- Own the design and implementation of robust, scalable solutions for VOD and live event delivery
- Take an active role in system and API design discussions bringing well-reasoned proposals and seeing them through to delivery
- Write and maintain automated tests and contribute to defining test approaches across the team
- Participate in code review, setting and maintaining engineering standards
- Identify and address performance bottlenecks, reliability risks, and technical debt proactively
- Mentor mid-level engineers through review, pairing, and day-to-day technical guidance
What we're looking for :
- You own your work from design to production and take responsibility for what you ship. You contribute to architecture discussions with substance. You help others get better without being asked to.
- Substantial Java 11+ demonstrated production experience on modern versions
- Deep relational database experience with MySQL and/or PostgreSQL
- Proven experience building and consuming RESTful APIs (JAX-RS, Dropwizard, Spring Boot or similar)
- Experience designing and working on event-driven systems (SQS, Kinesis, SNS, Kafka or similar)
- Demonstrated familiarity with AWS services including EC2, RDS, S3, SQS, and DynamoDB
- Substantial command of software design patterns and the judgement to apply them appropriately
- Demonstrated automated testing skills unit and integration with the ability to design meaningful test cases
- Experience working effectively in an agile, cross-functional delivery team
Skills
Java, Backend Architecture, RESTful API, AWS, Java 11, MySQL, Design Patterns, DynamoDB, System Design