Senior Full Stack Engineer (Platform DevEx) at tem

We're hiring a Senior Full Stack Engineer to join Platform's DevEx stream.

Platform is the service that underpins every Engine at tem, running as one unified team across four streams - DevEx, DevOps, TechOps, and QA - staffed project by project rather than siloed. DevEx's mandate is to let any engineer at tem build safely without needing to ask permission first: golden paths, tooling, and standards good enough that people want to use them, rather than mandates that slow them down. Because ownership across tem's microservices is deliberately open - any engineer can touch any service - DevEx's tooling has to work for the whole engineering org, not just one team.

This isn't a 'keep the lights on' infra role. DevEx builds real product for an internal audience - portals, dashboards, automation platforms, and developer tooling that engineers, and increasingly non-engineers, rely on daily. You'll work full stack, from front-end tooling and dashboards through to the serverless services and automation behind them. Priorities are set jointly from internal signal and a quarterly DevEx survey, so what you build is grounded in what engineers actually say is slowing them down.

In your first 12 months, you might:

• Help ship the CI/CD performance project, cutting build and test times that are currently a growing source of friction.

• Build golden-path tooling around the identity and access management overhaul, so access becomes automated, granular, and secure by default.

• Extend the Grafana dashboards-as-code work to give more teams real visibility into their services.

• Contribute to the internal automation platform (N8N) so non-technical teams can safely build their own tools.

• Help process and unblock items in the shared Engineering Health backlog.

🚀 Responsibilities:

• Build with impact: Develop full-stack tooling and internal platforms across modern front-end frameworks and serverless back-end systems, built for adoption by other engineers.

• Shape the experience: Design golden paths: build tools and standards good enough that teams choose to use them - influence, not mandate.

• Improve how we ship: Work on CI/CD, observability, QA infrastructure, and automation that removes friction across the whole engineering org.

• Collaborate cross-functionally: Partner with DevOps, TechOps, and QA colleagues, plus the wider engineering org whose feedback shapes the roadmap.

• Maintain high standards: Write clean, well-tested code, contribute to code reviews, and help improve team practices and documentation.

🎯 Requirements:

Must-Haves:

• Proven product delivery experience: experience as a Full Stack Engineer in a startup or fast-paced product environment, with ownership of key projects from start to finish.

• Front- and back-end fluency: strong experience with Python and/or Node.js, and modern JavaScript frameworks like React.

• Cloud-native skills: experience with AWS services, especially serverless tools like Lambda, API Gateway, and DynamoDB.

• A platform mindset: comfortable building for an internal audience of engineers - thinking about adoption, developer experience, and self-service, not just shipping a feature.

• Team-first approach: experience working in cross-functional teams where Engineers, Designers, and Product Managers collaborate closely.

Desirable:

• Experience with developer tooling, internal platforms, CI/CD, or infrastructure-as-code (Terraform, Spacelift, or similar).

• Exposure to observability stacks (Grafana, Sentry, CloudWatch) or identity/access management systems.

• Familiarity with microservice, event-driven architectures and the local-dev pain that comes with them.

• Exposure to the energy sector or other regulated industries.