{"id":2086302,"url":"https://alion.io/job/twinstream-java-software-engineer-2","title":"Java Software Engineer","company":{"id":689977,"name":"TwinStream","domain":"twinstream.com","url":"https://alion.io/company/twinstream","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":70,"open_postings":10,"ghost_share":0.5,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":34,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["GB"],"hiring_countries_total":1,"salary":{"min":70000,"max":90000,"currency":"GBP","period":"year","gross":null,"usd_annual":119115},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Amazon S3","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"AWS Fargate","optional":false},{"name":"AWS Lambda","optional":false},{"name":"Bash","optional":false},{"name":"Bitbucket","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"DynamoDB","optional":false},{"name":"GitLab","optional":false},{"name":"Go","optional":false},{"name":"JavaScript","optional":false},{"name":"Jenkins","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"MongoDB","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Spring Boot","optional":false},{"name":"Terraform","optional":false},{"name":"Docker Compose","optional":true},{"name":"Java","optional":true},{"name":"OpenShift","optional":true}],"status":"live","first_seen_at":"2026-05-27T11:05:24Z","employer_posted_date":"2026-10-08","last_verified_at":"2026-10-17T03:21:10Z","board_verified":true,"closed_at":null,"days_open":142,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":142},"description":"About Us \nIn 2019, the founders were working as engineers solving complex cross-domain problems within government organisations. \nTwinStream was formed to bring together their collective expertise and experience into a single business, focused on delivering technical excellence and high-quality service to clients. \nSince then, the company has grown to over 100 team members across the UK, with colleagues working both on-site with clients, hybrid and remotely from home. \nDetails: \nSalary: £70,000 - £90,000\nLocation: Remote, with potential travel to the Bristol office in the future.\nSecurity: BPSS, but must be eligible to obtain DV clearance.\nAbout the role: \nTwinStream software engineers (Java) develop components of a cross-domain security system within an agile development team. They are involved in the entire software development lifecycle, which includes understanding the need for change, software design, coding, testing, delivery, and support. A TwinStream software engineer is not just a coder; they comprehend the business and domain challenges and utilize their technical skills to address those issues. \nResponsibilities: \nUnderstand high-level requirements and collaborate to find solutions \nInvestigate technologies to gain a deep understanding of their applicability \nDevelop high-quality code \nProblem-solving deeply technical issues \nBuild tests at all stages of development from, unit tests to acceptance & performance tests \nBuild deployment code and pipelines, consulting with DevOps specialists \nAnalyse and resolve issues from 3rd line support \nCollaborate in code development and review colleagues’ work \nParticipate in indicative estimating & planning \nAny other reasonable duties relevant to skills and experience. \n\nKey Skills \nExperience in developing software using our core and/or related technologies \nAn agile development mindset \nExperience in agile working practices including \nTDD \nBDD \nContinuous delivery \nDevOps \nPair programming \nEstimating & Planning \nOpen, honest & positive attitude \n\nCore Technologies \nJava is the primary development language. Some exposure to other languages is useful, including Python, JavaScript, Golang, Bash Scripting, although these languages are used only occasionally. \nThe following technologies are used extensively in our solutions: \nJava \nSpring Boot \nAWS - S3, Fargate, Lambda, SQS / SNS \nRDBMS (Postgres, Oracle) & JPA \nMongo DB \nDynamoDB \nREST \nRabbit MQ \nDocker \nLinux \nTerraform \nAnsible \nJenkins \nGIT/Bitbucket \nGitLab \nKubernetes \n\nDesirable Skills \nOpenShift \nDocker Compose/Swarm \nTerraform \nAnsible \nPython \nDiversity & Inclusion \nWe’re committed to building a diverse and inclusive workplace. We welcome applications from people of all backgrounds, experiences, and identities. \nIf you need any adjustments during the recruitment process, please let us know. We’re here to support you \nFurther Information: \nDue to the nature of the work and the sectors we support, any offer of employment will be subject to the successful completion of the relevant security screening and clearance process.\nThis role requires eligibility for [BPSS / SC / DV]clearance. 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