lever
Sr. Software Engineer, Fullstack (UK)
Firstup
Remote, GBR
Full-time
Senior · 5+ years experience
Remote
Discovered 2 weeks ago
TypeScriptNode.jsReact.jsAWSKubernetesDocker
Free
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TypeScriptNode.jsReact.js
Key Skills for This Role
TypeScriptNode.jsReact.jsAWSKubernetesDocker
Full Job Posting
- Design, build, and maintain public-facing APIs and Agentic tools that enable enterprise customers to integrate with and extend the Firstup platform.
- Develop and own integrations with external enterprise systems, including HRIS platforms such as Workday, SAP SuccessFactors, and Dayforce.
- Build and maintain shared platform services used across the wider engineering organisation.
- Write high-quality code (reliable, readable, efficient, testable, scalable, maintainable), provide thorough code reviews, and create comprehensive tests and documentation.
- Apply broad, in-depth knowledge to develop and maintain large-scale multi-tenant services in the cloud.
- Actively use Generative AI tools and coding agents in day-to-day workflows to improve code quality and accelerate delivery.
- Collaborate across teams on industry standards and best practices to help others solve complex problems.
- Design future-ready solutions and address architectural gaps using modern microservices and cloud-native patterns.
- Own production health for your services, contributing to on-call rotations, incident response, and post-incident reviews in a "you build it, you run it" environment.
- Identify, analyse, and resolve system availability, reliability, and performance issues, contributing to observability and resiliency improvements.
- Partner with Product Management and Design to translate business requirements into scalable technical solutions.
- Bachelor's degree in Computer Science or related field, or equivalent experience.
- 5+ years building reliable, performant applications and microservices.
- Strong proficiency in TypeScript and Node.js. Ruby experience is a plus.
- Proven full-stack experience across frontend (React.js), backend, and database layers.
- Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar.
- Strong AWS experience, including compute, storage, networking, and monitoring.
- Excitement to build beautiful, intuitive products with a strong customer focus.
- Innate curiosity and a desire to learn and teach.
- Experience building and maintaining integrations with HRIS platforms such as Workday, SAP SuccessFactors, Dayforce, or similar enterprise HR systems.
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