{"id":1722369,"url":"https://alion.io/job/callsign-software-engineer-orchestration","title":"Software Engineer (Orchestration)","company":{"id":51577,"name":"Callsign","domain":"callsign.com","url":"https://alion.io/company/callsign","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Abu Dhabi, United Arab Emirates"],"countries":["AE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"DynamoDB","optional":false},{"name":"Java","optional":false},{"name":"Linux","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Redis","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"AWS","optional":true},{"name":"Grafana","optional":true},{"name":"Kubernetes","optional":true},{"name":"OpenTelemetry","optional":true},{"name":"Prometheus","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Reactive Programming","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-10-02T20:58:33Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-02T20:58:33Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Russian hacker, Vladimir Leonidovitch Levin, attempted the biggest bank heist the world had ever seen via dial-up internet in 1994, Zia Hayat, Callsign CEO and founder, was hooked - armchair fraud became a real possibility. From this moment, Zia knew he wanted to play a part in stopping the bad guys and securing the internet for all. Founded In 2012, Callsign's mission has been to make Digital Identity simple and secure for everyone and everything. In that time, we've grown to over 250 employees, opened offices in UK and Abu Dhabi, been recognised as a WEF Global Innovator and our technology is being used by many of the world's leading financial institutions to keep millions of consumers safe.\nBut we aren't stopping here. The identity revolution has only just begun, and we are looking to hire the brightest and inquisitive minds to help us make every web, mobile and physical Interaction seamless and secure. If this sounds like you, lets chat.\nAs a Software Engineer at Callsign, you will design, build, and maintain components of our highly transactional Java platform. You’ll work in an Agile, fast-paced environment, collaborating with cross-functional teams to deliver secure, scalable, and performant software. You’ll take ownership of features from development through deployment, proactively improving code quality, reliability, and efficiency.\nResponsibilities\nDesign, develop, test and maintain Java-based services and APIs.\nWrite clean, testable, and maintainable code following engineering best practices.\nUnderstand requirements before writing code by participating in refinement sessions with peers, QA and Product to deliver high-quality features.\nParticipate in code reviews and contribute to continuous improvement.\nPerform end-to-end testing of pushed code.\nSupport production deployments and troubleshoot issues with SRE/App Support.\nIdentify and address technical debt and performance bottlenecks.\nRequirements\n3-6 years of commercial experience in Java development.\nStrong knowledge of Java (8+/17+), Spring Boot, and RESTful API design.\nExperience with relational databases (PostgreSQL/MySQL/Oracle) and SQL.\nFamiliarity with DynamoDB or other noSQL databases.\nFamiliarity with Docker, Linux, and CI/CD pipelines.\nUnderstanding of software testing principles (unit, integration, contract and regression).\nUnderstanding of OOP fundamentals and SOLID principles.\nUnderstanding of space and time complexity.\nProduction experience of Metrics for reliable observability.\nExperience with rules engines, expression languages or workflow engines.\nExperience with orchestration and workflow patterns such as Saga, Process Manager or state machines.\nExposure to microservices architecture, distributed caching with Redis, and event streaming with Kafka.\nAwareness of secure coding practices and application security fundamentals.\nStrong communication, analytical thinking, and collaboration skills.\nGood to have :\nFamiliarity with observability tools (Prometheus, Grafana, ELK, OpenTelemetry).\nExperience with message queues (Kafka, RabbitMQ).\nBasic knowledge of Kubernetes, AWS, or Terraform.\nExperience in high-growth or startup environments.\nExposure to crypto practices and encryption/decryption \nUnderstanding of distributed system patterns such as Circuit Breaker, Idempotency and Outbox\nExposure to reactive programming (Spring WebFlux / Project Reactor) or Java Virtual Threads\nUnderstanding of applied cryptography (encryption, hashing, digital signatures, TLS/mTLS)\nBenefits\nPrivate Premium Health Insurance\nVisa costs including 1 month paid hotel stay on arrival\nAnnual Airfare Allowance for the home country\n3 months full pay maternity leaves & 2 weeks full pay paternity leaves\n25 days of annual leave + Callsign Bank Holiday (not included in holiday allowance)\nCompetitive Salary\nGratuity as EOSB","description_format":"text","description_chars":3833,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave","Health insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","Identity Management"],"lifecycle":[{"event":"open","at":"2026-10-02T20:58:33Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":30,"reasons":["conf:7","win:early"],"computed_at":"2026-10-03T04:39:09Z"},"pay":null,"html_url":"https://alion.io/job/callsign-software-engineer-orchestration","json_url":"https://alion.io/job/callsign-software-engineer-orchestration.json","meta":{"generated_at":"2026-10-03T04:39:09Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":4867,"day_limit":5000,"remaining_today":133,"minute_limit":60,"resets_at":"2026-10-04T00:00:00Z"}}}