About this role
Salary: £60,000 - 100,000 per year
Requirements: Bachelors degree in Computer Science or a related field, or equivalent experience3–5 years of experience building reliable, performant applications and microservicesProficiency in TypeScript and Node.js; Ruby experience is a plusExperience across frontend (React.js), backend, and database layersAWS experience, including core compute, storage, and networking servicesCuriosity, desire to learn, and openness to feedbackFocus on customer experiencePreferred: Experience with HRIS integrations such as Workday, SAP SuccessFactors, Dayforce, or similar platformsPreferred: Experience with Kubernetes, Docker, and HelmPreferred: Familiarity with Datadog or similar observability and monitoring platformsPreferred: Demonstrated use of Generative AI tools or coding agents in development workflowsPreferred: Experience in enterprise SaaS organizationsPreferred: Open-source contributions or a history of side projects Responsibilities: Contribute to the design, development, and maintenance of public-facing APIs used by enterprise customersBuild and maintain integrations with external enterprise systems, including HRIS platforms such as Workday, SAP SuccessFactors, and DayforceSupport shared platform services used across the engineering organizationWrite clean, well-tested, and well-documented code, and participate in code reviewsWork within large-scale, multi-tenant cloud services, developing understanding of scalability and fault toleranceUse Generative AI tools and coding agents in day-to-day workflows to improve code quality and delivery speedCollaborate with teammates and cross-functional partners to solve problems and deliver customer valueContribute to production health through on-call rotations and incident response in a you build it, you run it environmentIdentify and help resolve availability, reliability, and performance issues Technologies: AIAWSBackendCloudDatadogDockerFrontendHelmSupportKubernetesReactRubySAPTypeScriptmicroservicesNodeJSTM1Fullstack More:
We are Firstup, an intelligent employee communication platform serving 40 of the Fortune 100 companies and reaching more than 17 million employees daily. As a Senior Software Engineer, you will join the team working on our public APIs, agentic tools, enterprise integrations, and shared platform services. We offer an inclusive, high-growth environment, an excellent PTO program, health benefits, a casual and friendly culture, remote work, and leadership committed to your personal and professional growth. We are committed to equal employment opportunities. AI tools may assist our recruitment team, but final hiring decisions are made by people.
last updated 40 week of 2026