Job Description

Purpose of the Role:
The Quality & Reliability Engineer (QRE) ensures the company delivers stable, secure, and high quality software at pace. As a bridge between development, QA, and operations, the QRE owns our CI/CD pipelines, enforces quality gates, monitors reliability, and safeguards the platform against regressions, downtime, and technical debt.
Key Responsibilities
1. CI/CD & Deployment
Maintain and improve continuous integration and delivery pipelines (GitHub Actions / Heroku).
Automate test, linting, type-checking, and coverage enforcement gates.
Deploy approved changes to staging and production environments.
Own rollback procedures and ensure safe release practices (e.g. feature flags, canary rollouts).
2. Observability & Incident Response
Monitor production health (Sentry, logs, performance dashboards).
Track SLIs/SLOs (e.g., error rates, MTTR, CFR) and report reliability metrics monthly.
Prepare runbooks for common incidents; support the incident commander rotation.
3. Test Infrastructure & Quality Gates
Maintain and evolve automated test suites (unit, integration, acceptance).
Own flaky test backlog and test fixture/data generation tooling.
Collaborate with developers to ensure code is testable, isolated, and regression-safe.
4. Security & Platform Hardening
Integrate security scans, dependency checks (e.g., Dependabot), and audit trail features into CI/CD.
Partner with the Security Champion to ensure releases meet internal standards and SOC 2 requirements.
Contribute to infrastructure security posture (e.g., IAM scoping, key management, release audit logs).
5. Developer Experience & Release Tooling
Improve developer productivity through tooling, sandbox environments, and local parity.
Reduce cycle time from PR to production by identifying bottlenecks in the build or test stages.
Requirements:
Strong experience with CI/CD tooling (e.g., GitHub Actions, CircleCI, GitLab CI).
Familiarity with cloud platform pipelines (e.g., Heroku Pipelines).
Proficient in Python and shell scripting (bonus: Django familiarity).
Experience maintaining test automation frameworks.
Comfort with observability tools (e.g., Sentry, etc).
Track record of delivering reliable, secure systems in a SaaS or FinTech environment.
Knowledge/Experience in the following areas will be beneficial, but not required:
Experience with feature flag systems (e.g., Unleash, LaunchDarkly).
Understanding of SOC 2 / ISO 27001 controls in CI/CD.
Exposure to data privacy and multi-tenant architectures.
Experience running post-mortems and tracking incident action items.
Metrics you will own:
CI duration and reliability.
Change failure rate (CFR) and mean time to recovery (MTTR).
Defect escape rate and flaky test volume.
Sentry alert volume and resolution latency.
Release cadence and deployment success rate.
Traits we value:
Relentlessly pragmatic: You optimise for stability over perfection.
Systems thinker: You see failure modes before they happen.
Quality advocate: You know tests are not overhead, theyre leverage.
Security conscious: You think in terms of blast radius and defence-in-depth.
Quietly powerful: You make every engineer faster without becoming a bottleneck.