Senior Backend Quality Engineer | AI-Driven Testing

Thought Machine; Greater London; On-site; GBP 90,000 - 135,000; Full time

Benefits offered by this job

Highly competitive salary

Pension plan

Life insurance

Parental leave

25 days holiday

Flexible working hours

Cycle-to-work

Electric car scheme

Season ticket loan

Learning materials

Sports clubs

Two charity days

Weekly food pop-up

Job summary

Thought Machine, the London-based fintech, seeks a Senior Software Engineer in Quality Engineering to drive advanced testing architecture and scalable backend platforms. You will collaborate across product engineering to build intelligent tooling, observability, and robust CI/CD pipelines, elevating testing as a core capability and delivering high-quality software for global banks.

Join a fast-growing tech hub with a culture of learning and collaboration, where engineers own end-to-end delivery

Qualifications

• Extensive backend development with Go/Python and cloud-native architecture.
• Proven experience building scalable backend platforms with CI/CD, containers, and orchestration.
• In-depth knowledge of distributed systems, REST/gRPC APIs, and observability stacks.
• Experience with AI-assisted tools for code generation, log analysis, triage.
• Excellent communication and stakeholder management to champion quality.

Responsibilities

• Enablement & AI Tooling: Design, build, research, evaluate and adopt advanced engineering tools, including leveraging Agentic AI for the automated triage of performance test failures, automated test-code generation, and eliminating developer toil.
• Governance & Observability: Develop and integrate quantitative product reliability metrics for test coverage, execution speed and defect prevention, into CI/CD pipelines. Build telemetry and infrastructure for advanced testing paradigms, including deterministic fault injection to catch concurrency and race conditions.
• Drive Quality Engineering Initiatives: Partner with engineering teams to conduct risk analyses, implement integration and performance testing strategies, and resolve complex edge-case defects.
• Backend Engineering Delivery: Develop high-quality, testable, and robust backend services, APIs, and microservices in alignment with architecture standards.
• Technical Mentorship: Mentor junior and mid-level engineers in test automation patterns, backend engineering design, unit/integration testing strategies, and code hygiene.

Skills

Go/Python backend

Cloud-native architecture

Observability stack

AI tooling for dev

Strong communication

Tools

GitHub Actions

GitLab CI

Docker

Kubernetes

Prometheus

Grafana

BigQuery

Job description

Thought Machine, the London-based fintech, seeks a Senior Software Engineer in Quality Engineering to drive advanced testing architecture and scalable backend platforms. You will collaborate across product engineering to build intelligent tooling, observability, and robust CI/CD pipelines, elevating testing as a core capability and delivering high-quality software for global banks.

Join a fast-growing tech hub with a culture of learning and collaboration, where engineers own end-to-end delivery