Olo is hiring a Senior Software Engineer to join the Merchant Solutions team within the Pay engineering group. The role requires 5+ years' software engineering experience, strong .NET/C# backend skills, ownership of complex features, CI/CD and testing expertise, and experience with distributed systems and cloud services (examples listed include AWS, MongoDB Atlas, Kubernetes/EKS). The position is fully remote within Northern Ireland (Belfast is referenced) and involves on-call duties, mentoring, code reviews, and contributions to payments-related functionality (card-present and card-not-present flows, reconciliation, payouts, merchant account management).

Chainguard seeks a Staff Software Engineer for the Customer Platform team to design, implement, and operate backend systems (deep production Go experience required) powering entitlements, policies, and customer onboarding. The role involves API and integration work, extending AI product experiences, cross-team coordination, and mentoring senior/mid-level engineers. Base salary range is $205,000–$231,000 USD per year.

Join the MediaWiki Platform team to design, improve, and maintain core MediaWiki components and shared platform capabilities (authentication, caching, rate limiting). The role emphasizes backend engineering, system design, observability, CI/CD, incident response, performance, scalability, and mentoring in a fully remote, distributed team.

Hiring a Staff-level Backend/Platform Engineer to design and build core services for Tide's agentic platform — APIs, workflow orchestration, and tool integration — working with product, data, platform, and security teams to productionise shared AI capabilities. Tech stack highlights: Java, Spring Boot, JOOQ, SNS/SQS, Kafka, MySQL/Postgres (RDS/Aurora), AWS, Docker, Terraform, EKS, plus observability and CI/CD tooling.

Join Tide as a Staff Software Engineer on the agentic platform team to design and build core services (APIs, workflow orchestration, tool integration) that scale AI capabilities across the business. The role focuses on backend and platform engineering, reliability, security, observability and developer usability, working with product, data, platform and security teams. Tech stack includes Java, Spring Boot, event-driven systems (SNS/SQS, Kafka), MySQL/Postgres on AWS, Docker, Terraform, EKS and various data/ML tooling.

Remote Senior Backend Engineer role at DuckDuckGo focused on developing performant, testable backend systems and data pipelines (Perl v5, Go, Node.js). Responsibilities include implementing AI-assisted features for Search and Duck.ai, maintaining search relevancy, mentoring engineers, and collaborating cross-functionally. Compensation listed at $178,500 USD/year plus stock; role expects ~40 hours/week and travel ~2 times/year for company meetups.

Senior Backend Engineer on the Pipeline Security team responsible for designing and implementing backend architecture, RBAC, GraphQL APIs, and Kubernetes/Helm deployments for GitLab's native Secrets Manager. Work primarily in Ruby on Rails with some Go, own features end-to-end (design through production), collaborate cross-functionally, and focus on CI/CD and software supply-chain security (SLSA).

Work on GitLab Verify to improve performance, reliability, and usability for high-volume CI jobs; design and implement AI-powered agents and LLM-backed tooling integrated with the Duo Agent Platform; build instrumentation and observability; optimize database and job orchestration; and write secure, well-tested Ruby on Rails code while leading cross-functional technical work.

Join Olo's In-Store squad to design and deliver integrations with POS partners, lead architecture for distributed systems (microservices, event-driven/Kafka), improve resilience and performance, and drive cross-team initiatives. Requires 4+ years' software engineering experience and strong expertise in .NET/C#, cloud infrastructure (AWS, Kubernetes/EKS), CI/CD (GitHub Actions, Octopus), and Terraform. Role includes on-call duties and technical leadership/mentorship responsibilities.

Nearform seeks a Senior Software Engineer specializing in Python and AI to design and build AI-enabled applications. This is a full-time permanent role for candidates based in the UK (remote working with frequent travel to client sites in the UK and Europe). The role requires strong Python and modern AI framework experience, version control (Git), testing, CI/CD, cloud and database experience; Kubernetes, Golang and React are listed as nice-to-haves. Salary is up to £95,000 plus bonus and benefits. Visa sponsorship is not available.

Work on the Issues Platform team to design, prototype, implement, ship and support backend services and APIs (Ruby on Rails and Go). Responsibilities include building scalable, reliable systems, participating in on-call rotations and incident response, instrumentation/monitoring, CI/CD, mentoring peers, and writing architecture proposals.

Senior Software Engineer role on DoiT's PerfectScale team building large-scale backend services and high-throughput data pipelines. Requires strong Go experience (2–3 years with Go as main language) and 8+ years backend engineering, with expertise in distributed systems, databases (Postgres, ClickHouse), containers (Docker, Kubernetes), microservices, CI/CD and performance optimization. Remote full-time position for listed EMEA countries.

Hands-on senior backend engineer responsible for designing, building, and owning large-scale distributed systems and high-throughput data pipelines (primarily using Go). Requires 8+ years backend experience with 3+ years architecting high-load systems, strong experience with relational and analytical databases (Postgres, ClickHouse), containers and cloud-native tooling (Docker, Kubernetes, GitOps, CI/CD), and performance-sensitive engineering.

Senior Software Engineer (remote, UK/Ireland/Estonia/Netherlands/Sweden/Israel; contractors considered in parts of Eastern Europe and Portugal). Responsible for designing, building and owning large-scale backend services and data pipelines (primarily using Go and cloud-native technologies), leading architecture and technical initiatives, and mentoring engineers. Requires ~8+ years backend experience and 2–3 years commercial Go experience; experience with databases (Postgres, ClickHouse), containers, Kubernetes, CI/CD, and performance-sensitive systems.

Hands-on senior engineer and technical leader responsible for designing, building and operating distributed backend systems and data pipelines. Requires ~8–15 years backend experience, strong Go experience (2–3+ years commercial), expertise with databases (Postgres, ClickHouse), cloud-native tooling (Docker, Kubernetes, GitOps, CI/CD), performance optimization, and experience working with cloud providers (AWS/GCP/Azure). Role includes architecture leadership, reliability SLAs, and mentoring.

Hands-on senior engineer and architectural leader for PerfectScale, responsible for designing, building, and operating distributed systems and data pipelines using Go and cloud-native technologies. Requires 8–15 years backend experience (minimum 8 years) and 2–3 years commercial Go experience; strong experience with databases (Postgres, ClickHouse), containers, Kubernetes, CI/CD, and performance-sensitive workloads.

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).

Responsible for designing, building, deploying, and operating backend services for Mapbox's Navigation and Traffic initiatives. Role emphasizes scalability, low-latency performance, testing and monitoring, reducing technical debt, and on-call support. Requires 5+ years experience and proficiency with Python, TypeScript (backend), and AWS (CDK/ECS/Step Functions/Lambda/S3).

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.