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ExTrac
ExTrac
11 – 50 Employees
EnterpriseSaaSSecurity
ExTrac develops domain-specific intelligence and analytics for organisations that need clearer assessments of risk and opportunity. Its platform brings together curated real-world data, human expertise, and an agentic AI Co-Analyst across web and mobile apps, reporting tools, and integrations. Customers can investigate information, combine it with their own data, create visualisations and reports, and receive alerts for timely decision-making. ExTrac supports use cases spanning defence and security, financial services, insurance, corporate risk, law enforcement, and technology platforms, including situational awareness, compliance, early warning, content moderation, and operational intelligence. The company’s 11–50-person team works at the intersection of intelligence, analytics, security, and SaaS.
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Backend Software Engineer (Go/Python) – London Hybrid

Build Go and Python microservices, APIs, and data pipelines for ExTrac’s decision intelligence platform. Improve scalability, reliability, and performance in partnership with analysts and engineering teams.

GBUnited Kingdom
£75,000 – £80,000 / year
HybridFull-timeJuniorMiddleNo degree requiredEnglish RequiredFull-stack EngineerSoftware Engineer
CloudElasticSearchGoMicroservicesPostgresPython

Description

  • Own features, components, and APIs across the system from development through delivery
  • Participate in system design and architecture discussions
  • Develop and maintain APIs for internal teams and customers
  • Create Go and Python microservices for data collection, processing, and querying
  • Ensure services meet production requirements for latency, cost, and reliability
  • Implement instrumentation for monitoring service performance
  • Build and operate high-throughput data streaming pipelines
  • Increase pipeline scalability, resilience, and responsiveness
  • Optimise database and index performance
  • Collaborate with analysts to translate product feedback into system changes
  • Evaluate product requests against longer-term platform priorities
  • Work with AI and frontend teams on cross-functional features
  • Contribute to deployment pipelines, service templates, observability, and engineering environments

Requirements

  • Eligibility to obtain UK security clearance
  • Nationality from a NATO member state, Australia, or New Zealand
  • At least two years of professional software engineering experience
  • Track record of building and shipping production-grade services
  • Experience owning features or components end to end within a larger system
  • Proficiency with Go or Python microservices and the ability to learn the other quickly
  • Practical knowledge of software engineering patterns
  • Strong communication and collaboration abilities
  • Ability to write clear technical documentation and discuss requirements with engineering and wider team colleagues
  • Interest in deployment pipelines, database behaviour, and security engineering
  • Interest in product usage and willingness to incorporate analyst feedback into requirements discussions
  • Go microservices experience is desirable
  • Experience with Elasticsearch or PostgreSQL is desirable
  • Experience with cloud infrastructure, infrastructure as code, and CI/CD pipelines is desirable
  • Experience with streaming or event-driven pipelines is desirable
  • Experience with feature flags and trunk-based development is desirable
  • Experience in defence, government, or other compliance-constrained software environments is desirable

Benefits

  • Private medical insurance
  • Enhanced pension contributions
  • Enhanced parental leave
  • Workplace nursery scheme
  • £500 annual education budget
  • Manager-approved coverage for higher-cost educational opportunities such as conferences
  • 33 days of annual leave including bank holidays
  • Flexible working arrangements
  • Option to work remotely for up to three days per week
  • Regular team days at the central London office

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