platform engineer for investment platforms

• Architect, implement, and maintain scalable, secure infrastructure in AWS using Terraform;
• Design cloud-native, serverless solutions using MongoDB, Lambda, API Gateway, and other AWS services;
• Contribute to incident response, production readiness, and reliability initiatives across engineering squads;
• Enhance observability and platform insight through actionable alerting and data visibility using Datadog;
• Improve CI/CD processes with GitHub Actions to reduce delivery friction;
• Collaborate with Node.js/TypeScript software engineers to ensure secure, performant, and resilient applications;
• Mentor engineers and champion DevOps culture and best practices across teams;
• Own platform-level outcomes and shape the progression of the role.

• Experience as a pragmatic platform engineer in regulated environments;
• Experience balancing delivery with compliance and operational excellence;
• Confidence working with JavaScript/TypeScript-based applications and development teams;
• Knowledge of MongoDB and Postgres, including diagnosing, designing, and optimising for scale and resilience;
• Strong focus on observability and actionable alerting;
• Fluency in AWS best practices, infrastructure-as-code with Terraform, and CI/CD tooling such as GitHub Actions;
• Exposure to architectural decisions;
• Ability to work autonomously in a fast-paced, ambiguous environment and follow through on ideas

• £55,000 And £75,000, dependant on experience + reviewed annually;
• 27 Days holiday plus bank holidays, a birthday day off, and three days per year for Dependant leave;
• Two volunteering days per year;
• Option to work abroad for up to six weeks a year;
• Flexible rewards including extra pay, additional holiday, and increased learning budget;
• One month paid sabbatical after eight years of service;
• 6% Employer pension contribution and life assurance;
• Private medical insurance with AXA Health;
• Enhanced Parental leave;
• MacBook and up to £500 home office setup budget;
• £750 Per person learning budget;
• Health and wellbeing initiatives, including free therapy via Wellness Cloud and mental health support via Headspace;
• Financial wellbeing support including access to Octopus Money, Octopus Share Incentive Plan, and will writing via Octopus Legacy;
• Perkbox discounts and perks;
• Access to Cycle to Work and Octopus Electric Vehicle Leasing;
• Hybrid work with travel to Bath, London, and Edinburgh a couple of times a month;
• The interview process includes a Cloud System Design interview, Terraform Code Review interview, and bar-raiser culture-based interview.

Seccl is an Octopus-owned embedded investment platform helping more people invest effectively. The company is B-Corp certified and develops products aimed at transforming the investment industry.