Remote-first senior PHP developer role contributing to backend and API development for a fintech white-label/SAAS platform. Responsibilities include designing, developing, testing, documenting and supporting software, integrating third-party payment systems, implementing DDD/CQRS/Event Sourcing patterns, optimizing SQL and system performance, and setting up integration/test environments. Role accepts applicants across Europe (including EEA, UK, Switzerland and listed non-EEA countries) and others who can work within the CET time zone.

WhiteTech is hiring a remote PHP developer to design, develop, test, document and support backend systems and APIs for fintech products. The role emphasizes Domain-Driven Design, Symfony, Doctrine, PostgreSQL, CQRS and Event Sourcing, containerization (Docker, Kubernetes), integration testing (PHPUnit, Codeception, Behat) and architectural design for large-scale microservices-based systems. Candidates across Europe (including specified non-EEA countries) or those able to work within CET are welcome.

WhiteTech seeks a remote PHP Developer with 4+ years of commercial PHP experience and hands-on SEON integration. The role focuses on building fraud detection/prevention flows, risk scoring and decision logic, orchestration within complex systems, and integrating SEON beyond simple API calls. Required skills include REST APIs/webhooks, asynchronous processing, queues, transactional consistency, idempotency, observability, SQL, and experience with Symfony or another modern PHP framework. Candidates across Europe (including listed non-EEA countries) and those able to work within CET are welcome to apply.

Lead backend developer role focused on PHP/Symfony development, RESTful API design, database design and optimization (PostgreSQL), integration of third-party payment systems, automated and integration testing, and architecture for scalable microservices and event-sourced systems. Remote-first position with flexible hours within the Central European Time zone; applications welcomed from Europe (including UK, Switzerland, and listed non-EEA European countries).

Join Olo's Menu team to develop and operate performance-sensitive, distributed backend services using .NET/C#. Role requires ~3+ years' software engineering experience, strong testing and CI/CD practices, familiarity with Redis/Kafka/AWS, debugging and production monitoring, and participation in on-call duties. Daily tooling includes GitHub, GitHub Actions/TeamCity and AI coding assistants (Claude Code, GitHub Copilot).

Work on the AppCore Stacks squad to design, build, and operate backend reconciliation and control-plane services that manage Grafana Cloud stacks (creation, configuration, migration, and operation). The role involves Go-based backend development, Kubernetes and cloud integrations, infrastructure-as-code tooling (Helm, Terraform, Jsonnet), incident response, and cross-team collaboration. UK compensation range: GBP 72,000–90,000.

Join AppCore Stacks to design, build, and operate reconciliation and control‑plane services (including the SSS backend) that manage Grafana Cloud customer stacks. The role requires production engineering on stateful, distributed SaaS systems, experience with Golang, familiarity with Kubernetes and infrastructure-as-code tooling, participation in OnCall and incident response, and at least 1 year of fully remote work experience. Compensation range for Spain is EUR 65,000–81,000 (base).

CircleCI seeks a Software Engineer (remote, UK) with 3+ years production full-stack experience, backend-leaning and strong Go expertise. Role emphasizes AI-native engineering, CI/CD, system design, observability (Honeycomb, Datadog, Rollbar), and operating reliable distributed services. Salary range: £76,500–£95,000 GBP.

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).

Role owns features end-to-end for the Customer Platform: design, implement, roll out, and iterate backend systems (Go, REST/gRPC) that power entitlements, policies, and customer onboarding. Acts as the primary technical interface to other engineering teams, extends AI capabilities into customer-facing experiences, and provides technical leadership and mentorship. Requires production Go experience, strong API and backend design/operation experience; familiarity with cloud-native environments (Kubernetes, cloud provider APIs) and experience with entitlements/billing or AI features are noted as pluses.

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.

DuckDuckGo is hiring a Senior Backend Engineer to work remotely across multiple countries. The role requires 7+ years of backend experience (Perl, Go, Node.js), familiarity with AI agent tooling (RAG, prompt engineering, evaluation frameworks), and building/maintaining data processing pipelines and search-relevancy features. Responsibilities include owning complex projects, mentoring engineers, and collaborating across teams. Compensation listed at $178,500 USD/year plus stock options. Candidates should expect ~40 hours/week, occasional travel (~2x/year for all-hands and retreats), and a background check; company-sponsored health benefits are limited to US-based team members.

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.

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.