Platform engineer

Hybrid with travel to Bath, London and Edinburgh a couple times a month

Seccl is the Octopus-owned embedded investment platform that’s on a mission to helping more people to invest – and invest well.

We’re B-Corp certified with an amazing product-market fit, impressive early traction and the potential to transform an outdated industry, for the better. We've been growing fast and will scale even faster over the next few years.

We’re also proud to be part of Octopus, the £multi billion group that's on a mission to breathe new life into broken industries, through companies like Octopus Energy, Octopus Investments and Octopus Money.

Check out the Seccl website for the latest on our products and our mission to shape the future of investments.

We're looking for a Platform engineer to shape and evolve the platform that underpins our investment products. You’ll be someone who loves understanding engineering problems and enabling teams to self-serve their needs. You view the cloud platform as a product, and engineering as your customer.

The role is within our Cloud Resilience team - a critical squad within our engineering organisation responsible for empowering squads to build and run their own services.

We’re primarily in AWS
, utilising Lambda, ECS, SQS, Event Bridge, API Gateway, Aurora, Redshift among others. Our main data store is MongoDB Atlas and our observability platform is Datadog
. Our application is written in Typescript/NodeJS and our infrastructure is defined in Terraform
.

• Architecting, implementing, and maintaining scalable, secure infrastructure in AWS using Terraform.
• Designing cloud-native solutions using MongoDB, Lambda, API Gateway, and other AWS services with a strong focus on serverless.
• Contributing to incident response efforts, production readiness, and reliability initiatives across engineering squads.
• Enhancing observability and platform insight through actionable alerting and data visibility using Datadog.
• Continuously improving CI/CD processes with Git Hub Actions, reducing friction in delivery pipelines.
• Collaborating with software engineers (working in Node.js/Type Script) to ensure secure, performant, and resilient applications.
• Mentoring engineers and champion Dev Ops culture and best practices across teams.

• You’re a pragmatic platform engineer with experience in regulated environments, balancing delivery with compliance and operational excellence.
• You’re confident working with JavaScript/Type Script-based applications and collaborating closely with development teams.
• You know what “good” looks like for databases like MongoDB and Postgres and can diagnose, design, and optimise for scale and resilience.
• You care deeply about observability – you don’t just monitor systems, you build alerts that engineers can act on.
• You’re fluent in AWS best practices, infrastructure-as-code (Terraform), and CI/CD tooling like Git Hub Actions.
• You’ve had exposure to architectural decisions and willingness to own of platform-level outcomes.

• You rely on a lot of top-down direction. Here, you’ll have a lot of freedom and ownership of your role, and you’ll be expected to shape your own progression.
• You’re not comfortable working in a fast-paced environment. Our speed and scalability are what set us apart; you need to be able to act quickly and think on your feet.
• You struggle to follow through on ideas. We value people who do what they say they will. If you care about something, you have the freedom here to make it happen.
• You don’t like change. You’ll get on great here if you relish the ambiguity of rapid growth and are willing to embrace uncertainty.

We offer a generous mix of benefits for the things that really matter to our people, including:

A salary between £55,000 and £75,000 – dependant on experience + reviewed annually

27 days holiday + bank holidays (some can be flexible) + day off on your birthday + three days (full time) per year for Dependant leave

Two volunteering days per year

Option to work abroad for up to six weeks a year

Secclbrate - our recognition programme that offers a mix of…