Elastic is hiring a Software Engineer II for the Web Engineering team to own features across the full stack for elastic.co. Responsibilities include building React components, backend services, deployment pipelines; instrumenting client and server performance (Core Web Vitals, RUM, logging, metrics, tracing); triaging security vulnerabilities; participating in code reviews and on-call rotation. Requires 3+ years in full-stack or frontend roles, strong TypeScript and React skills, hands-on backend experience with Node.js/Python/Go, CI/CD ownership (e.g., GitHub Actions, Jenkins), and experience building highly available, scalable systems. Location indicated as United Kingdom.

The Wikimedia Foundation seeks a Senior Software Engineer to design and deliver improvements to wikitext processing infrastructure, write PHP and JavaScript, build and maintain internet APIs, and instrument components. Role is remote (preferred timezone GMT-4 to GMT+2), requires 5+ years of experience, and familiarity with parser/compiler concepts, performance, and large-scale, user-facing systems.

Muck Rack is hiring a Senior Software Engineer, Fullstack to own and deliver customer-facing search features across frontend and backend. The role emphasizes frontend work with Vue while contributing to Python/Django services and systems such as Elasticsearch, Kafka, Celery, and MySQL. Requires 5+ years of professional software engineering experience, TypeScript experience in large codebases, and willingness to participate in on-call rotations. Remote candidates in Bulgaria, Ireland, and the United Kingdom are listed; up to 10% travel and an annual company offsite are expected. The posting includes an Ireland salary range of €95,000–€110,000 annually.

Olo is hiring a Fullstack Software Engineer on the Catering team to maintain scalable components and services that support online catering orders. The role is fully remote within Northern Ireland and requires 2+ years post-graduation experience, commercial experience with C#, .NET, and a front-end framework (React/Angular/Vue), plus AWS experience. Responsibilities include architecture and technical decision-making, improving reliability and performance, incident response and on-call duties, collaborating with product and design, and using AI coding assistants like Claude Code and GitHub Copilot as part of the workflow.

Lead design and development of GitLab Duo CLI features and supporting infrastructure, primarily using TypeScript across frontend and backend. Drive CLI reliability, observability, and performance; collaborate with Product, Design, and Developer Clients teams; contribute to IDE extensions (JetBrains in Kotlin, VS Code in TypeScript) as needed. Role is fully remote with location listed as United Kingdom.

GitLab seeks a Senior Backend Engineer for the Plan: Spec-Driven Development team to build backend flows, APIs, data models, and evaluation systems that turn intent into plans and mergeable code. The role emphasizes Ruby on Rails and Python experience, PostgreSQL, API design (GraphQL/REST), work with LLM APIs and agent systems, mentoring, and collaborating in an all-remote, async-first team.

The role designs, builds, and maintains backend services and APIs that support GitLab's go-to-market and growth platforms, contributing to frontend work when needed. It requires strong ownership of production backend systems, proficiency with Vue, Node, Go, and Ruby, experience in API design, data modeling, and database performance, and the ability to document architecture and mentor junior engineers.

Join Hudl's Athlete Performance group as a Senior Engineer to design and implement hardware-agnostic ingestion layers, time-series data architectures, and ML inference pipelines that combine live video with biomechanical streams. The role involves full-stack web feature delivery, collaboration with cross-functional teams, mentoring other engineers, and working primarily from the London area (with UK remote options). Preferred tech experience includes C#, Node, React, TypeScript, MongoDB/SQL/Elasticsearch and AWS.

Join Ping Identity's Platform Engineering team to design, build, test and operate IAM capabilities across the stack (infrastructure to UI), implement APIs and services, prototype solutions in emerging areas, and use AI tooling such as Claude Code to accelerate engineering. Role emphasizes Java/JavaScript, Google Cloud, Docker, Kubernetes, distributed systems, and experience with authentication/authorization and identity protocols.

Human Made is hiring a remote Web Engineer across the EMEA region to develop enterprise WordPress platforms, including plugin development, block themes and Site Editor work. The role emphasizes PHP and front-end skills (HTML/CSS/JS), performance, accessibility, MySQL and API integrations; salary is listed at £30k–£50k and many hires outside the UK/USA/Australia are engaged as contractors.

Ashby is hiring Design Engineers in the United Kingdom (Manchester, Oxford, London, Cambridge). The role requires designing and shipping user-facing features, improving and expanding the design system, and working across frontend and backend technologies. Tech stack includes TypeScript, React, GraphQL, Node.js, Postgres, and Redis. This posting covers mid and senior levels (minimum ~2 years experience).

Ashby is hiring a Senior Product Engineer to own large product areas end-to-end: research, write product specs, wireframe, prototype, and implement features across frontend and backend. Example work includes automated interview scheduling, a declarative filter system compiled to SQL, and in-app offer signing. The team uses TypeScript, React, GraphQL, Node.js, Postgres, Redis, fast CI/CD, and AI-assisted tooling. Role is remote-friendly (in-person company/department meetups at least twice a year) and emphasizes ownership, product thinking, and collaboration.

Kraken seeks a Senior Software Engineer to architect and build production AI/LLM-powered HR solutions and agentic workflows that integrate HRIS, ATS, payroll and ticketing systems. The role requires designing, deploying, and governing automated workflows (n8n, Python, Claude/Anthropic, MCP), ensuring PII and cross-jurisdictional compliance, and transferring maintainable tooling and runbooks to the People team. Candidates must have 5+ years software engineering experience and relevant experience delivering AI-enabled production systems and people/HR technology integrations.

Senior, hands-on Staff Product Engineer (Ruby on Rails). Remote role owning hard PRs and end-to-end product areas (billing, enterprise auth, API, dashboard, infra), responsible for performance, security, mentoring via code review, and shipping production Rails code. Fluent English and prior Stripe/billing experience required.

SearchApi seeks a remote Ruby Engineer to build and maintain web-scraping integrations and browser automation (CDP), tackle anti-bot evasion, optimize concurrency, and support production systems at scale. The role involves debugging production issues, reverse engineering protections, contributing across the stack (Ruby on Rails, PostgreSQL, Redis, Sidekiq), customer-facing support, and improving monitoring and infrastructure (Terraform, AWS, Prometheus, Grafana).

Human Made seeks a freelance Senior Web Engineer to join its distributed team remotely. The role requires deep WordPress knowledge (internals and ecosystem), strong PHP and JavaScript skills, experience with REST APIs, Git, MySQL, debugging, performance and security, and the ability to architect complex subsystems and contribute to team activities.