Senior Software Engineer – Node.js, TypeScript

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🕒 December 19, 2025

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Seccl

WebsiteLinkedInAll Job Openings

51 - 200 employees

💳 Fintech

☁️ SaaS

🤝 B2B

Fintech • SaaS • B2B

Seccl is an API-first, embedded investment platform and regulated custody provider that enables businesses to launch, operate and scale digital investment propositions. It offers custody and automated operations, developer-friendly APIs, no-code professional and client portals, and digital tax wrappers (ISA, JISA, SIPP) to financial advisers, adviser-tech providers, neobanks and fintechs. Seccl is part of the Octopus group and emphasizes scalable, low-cost investment infrastructure and compliance as a service.

📋 Description

• Work collaboratively in a domain aligned cross-functional squad made up of engineers and product along with colleagues from customer-facing and operations teams. • Design, implement and operate your services within your domain. • Be accountable for the SLAs of your products and iterative improvements. • Maintain and extend documentation for your services. • Foster a culture of continuous improvement and technical excellence while understanding when “good enough for now” is appropriate. • Provide guidance and mentorship for more junior engineers. • Communicate with non-technical colleagues to answer queries about the Seccl system.

🎯 Requirements

• To own your services from design to operation. We operate a build-and-run model where engineers have autonomy but full accountability. • Engineers are not passengers in their products but champions. Drive improvements and features while being comfortable to openly collaborate and investigate ideas and being challenged. • Have a strong ability to understand business requirements and turn this into efficient, scalable solutions. Desire to learn our business domain. • Experience in a strongly/statically typed language. • Have a strong understanding of designing, building, and running high-quality, standards-compliant workflow APIs, with a focus on testing, observability, and performance. • Have worked with a cloud provider (AWS/Azure/GCP). We use AWS. • Have worked with distributed systems and are comfortable debugging through tracing and observability. • Willing to be on-call for your services. • Have experience with Node.js, specifically Typescript. • Have experience with Amazon Web Services. • Have experience with Serverless products. • Have experience with document databases, specifically MongoDB. • Have experience mentoring/managing. • Have experience in a build-and-run model. • Have experience in a structured on-call process and incident management • Previous experience working in regulated industries, particularly finance.

🏖️ Benefits

• 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 • Length of service award – one month paid sabbatical at eight years • 6% employer pension contribution, and life assurance • Private medical insurance with AXA Health • Enhanced Parental leave • MacBook and up to £500 home office set up budget • £750 per person learning budget • Option to work abroad for up to six weeks a year • Health and wellbeing initiatives including free therapy via Wellness Cloud, mental health support via Headspace • Strong financial wellbeing focus including access to Octopus Money, Octopus Share Incentive Plan and will writing offering via Octopus Legacy • Perkbox – Flexi-points giving you a range of discounts and perks including free weekly coffee, gym and retail discounts • Access to initiatives like Cycle to Work and Octopus Electric Vehicle Leasing