The role requires 6+ years building large-scale distributed or customer-facing systems and contributing across frontend and backend. Responsibilities include designing and owning APIs, microservices, integrations (telephony, CRM, identity), and AI orchestration for Hopper's HTS Assist and internal agent/self-serve platforms. Candidates must be registered as self-employed in Ireland and handle local tax/social security.

Work on Hopper’s CX Platform to design, build, and operate core systems that power post-booking experiences (self-serve flows, internal agent tools, HTS Assist). Responsibilities include developing APIs, microservices, integrations (telephony, CRM, identity, booking platforms), contributing to architecture and reliability, and collaborating with Product, Design, AI, Data, and Operations. Minimum 6+ years experience.

Join Hopper's CX Platform team to design, build, and operate core systems for the post-booking experience (self-serve flows, internal agent tools, HTS Assist conversational AI). Role requires 6+ years building large-scale distributed systems or customer-facing applications, strong full-stack and API/microservices experience, and familiarity with cloud infrastructure; preferred experience includes conversational AI/LLM orchestration, Scala/Python, React/TypeScript, and telephony/CRM integrations.

Join the CX Platform team to design, implement, and operate core systems powering Hopper's post-booking journey (changes, disruptions, refunds, and support). Work includes building scalable APIs, microservices, event-driven orchestration, integrations with telephony/CRM/identity/booking systems, and contributing to conversational AI and agent tooling. Requires 6+ years experience in large-scale distributed or customer-facing systems and strong full-stack capability.

Work on core systems powering Hopper’s post-booking customer experience and HTS Assist (agentic AI). Responsibilities include designing and implementing scalable APIs, microservices, orchestration for chat/voice/web, integrating telephony/CRM/identity/booking systems, owning features end-to-end, and collaborating with Product, Design, AI, Data and Operations. Required: 6+ years software engineering experience, strong frontend and backend skills, REST/microservices/event-driven experience, cloud and database experience (PostgreSQL/MySQL/NoSQL), and proficiency in French and English.

Join the Docker Desktop Desktop Platform team to design and build backend and platform systems (installation, updates, startup, shared components). Responsibilities include improving reliability, observability, and performance, contributing to architecture, writing high-quality Go code, and participating in on-call rotation as needed. This is a 100% remote role restricted to candidates currently living in the East Coast time zone (US or Canada). Docker considers visa sponsorship on a case-by-case basis.

Senior backend engineer responsible for technical direction and implementation of the MCP Gateway and related services. Requires 6+ years backend experience, strong product and security mindset, proficiency in modern languages (primarily Go), and experience with secure, high-throughput services. Remote-first role with offices in Seattle and Paris; may participate in on-call rotation. Docker considers visa sponsorship case-by-case.

Senior Principal Engineer responsible for defining multi-year technical vision and architecture for Docker's foundational Bridge platform, driving cross-company programs, architecting billing and identity control planes, data and observability infrastructure, and enabling enterprise governance and usage-based monetization. Requires deep experience in large-scale distributed systems, platform domains (identity, billing, data, infrastructure), cloud and modern infrastructure patterns, and cross-organizational leadership.

DuckDuckGo seeks a Senior Web Security Engineer (Browser Platform) to perform browser security audits, implement SERP security mitigations, manage application security scanning (SAST/DAST) integrations, run internal red-team exercises, and support security triage and incident detection/response. Requires 7+ years in web/application security, strong JavaScript skills, experience with WebView technologies and browser security models, and hands-on vulnerability exploitation experience. Role is remote, includes travel roughly twice a year, and lists annual compensation of $178,500 USD plus stock options.

Join GitHub as a Staff Software Engineer focused on data engineering to design, prototype, implement, and support high-performance data systems and APIs. The role requires several years of software engineering experience (job lists alternatives including 3+ to 9+ years depending on qualifications) and proficiency with languages such as Go, Python, Ruby, Rust, JavaScript, C/C++, C#, or Java; experience with Azure services, Cosmos DB, and scalable data pipeline design is preferred.

Four Kitchens is hiring a remote Backend Drupal Engineer (title includes Costa Rica). Responsibilities include writing clean, scalable PHP and JavaScript code, developing custom and community Drupal modules, performing content migrations, participating in code reviews, architecting Drupal solutions, and working closely with clients. Candidates should have experience with PHP and JavaScript, exposure to Drupal or similar CMS (WordPress), strong communication skills, and familiarity with modern JavaScript frameworks such as React. The role is on a distributed team and encourages open-source engagement.

Role involves developing file format parsers and feature extraction engines, implementing and testing robust libraries/SDKs and APIs, collaborating with data scientists on ML features, performing reverse engineering and malware analysis, and working across Windows/macOS/Linux. Requires ~12+ years experience with Rust/C/C++/Python and familiarity with CI/CD and cloud platforms.

Work on the Falcon Host sensor (kernel-mode driver) and related cloud telemetry features. Responsibilities include designing, implementing, and owning cross-platform sensor features (Windows primary, also Mac/Linux), debugging low-level issues (memory corruption, process contention, performance), collaborating with distributed teams, and mentoring others. Requires strong C++ and Windows kernel/OS internals expertise; preferred experience with WFP, TCP/IP, USB, file systems, Agile and Git.

Join ClickUp's Hierarchy squad to develop and maintain scalable, high-performance backend systems using Node.js (Express, NestJS), Typescript, Postgres, Kafka and AWS. The role requires 8+ years of backend experience, expertise in database optimization, microservices, containerization (Docker, Kubernetes), and strong collaboration and problem-solving skills. Remote work options available.

Join ClickUp's Fields squad to design and build scalable, high-throughput, low-latency backend systems. Responsible for end-to-end development, performance tuning, API design, and working with cross-functional teams. Requires 5+ years building performant systems (ideally Node.js/TypeScript), experience with SQL at scale, event-based systems, and major cloud services (ideally AWS). Remote role (listed #LI-REMOTE).

Hands-on principal engineer to own long-term architecture for ClickUp's collaboration surfaces (real-time editing, live canvases, file uploads, media streaming). Role requires deep experience in distributed systems and real-time collaboration (CRDTs/OT), working across frontend, backend, and infrastructure (Angular, Quill, WebSockets, Yjs, Node.js, PostgreSQL, AWS). Accountable for shipping multi-quarter initiatives, improving performance and reliability, and mentoring engineering leaders.

Join Chainlink Labs Product Security to design and deploy security tools and core features for public Chainlink products, advise teams on secure architectures, define processes to detect and mitigate attacks, and contribute to Web3 security. Minimum qualifications include experience in Go or Rust and prior security-related work.

Chainlink Labs seeks Research Interns/Research Engineers to work with domain experts on applied cryptography, mechanism design, distributed systems, and related research and transition innovations into production. Requires B.S. in computer science or equivalent, coursework in algorithms/data structures and discrete math, familiarity with academic literature, and professional software development experience. Preferred: advanced degree and familiarity with Go or Rust and blockchain/smart contracts. Role is global and remote-based with some expected overlap with EST.

Join Canonical's Server Certification team to develop and maintain open-source Python-based testing tools (Checkbox, Testflinger), troubleshoot hardware compatibility and performance issues on Ubuntu Server, support hardware partners in certification efforts, and assist internal teams on datacenter/cloud product deployments. Role is home-based in the Americas (team centered in North and South American time zones) and involves global travel approximately 2–4 times per year. Required skills include Python, shell scripting, familiarity with server-class hardware, virtualization/container technologies, and test automation/CI-CD concepts; position is customer-facing.

Contract Senior Front-End Engineer role (remote, open globally) responsible for architecting and building modular front-end products across WordPress block themes and Next.js/React applications. Duties include implementing performant, accessible interfaces using custom CSS and Tailwind, conducting code reviews, establishing component patterns, and collaborating with clients and distributed teams. Position is contract-based with variable contractor fees and potential to be invited to full-time roles when appropriate.