Join Kraken’s Consumer Mobile team to design and ship production React Native features for a new app targeting Asian users. Responsibilities include end-to-end feature ownership, working with APIs and real-time data, collaborating closely with Product and Design, raising engineering standards through technical discussions and code reviews, and addressing regional UX, firewall, and connectivity challenges. English communication is required; experience in fintech/crypto and native mobile (Swift/Kotlin) is a plus.

Mozilla seeks an experienced browser engine engineer to investigate browser behavior, prototype engine-level changes, instrument and measure performance and correctness, and work closely with a small cross-disciplinary team. Requires substantial experience with browser internals (e.g., DOM, layout, rendering, JS runtimes), strong C++ or Rust skills, profiling and testing practices, and the ability to build scripting/tools and prototypes. Hiring ranges for Canada are provided in the posting.

Join Quora's distribution team to own and advance second-phase ranking models for feed and digest. Responsibilities include end-to-end ML system ownership (data pipelines, candidate extraction, feature engineering, model training, production integration) and collaborating with other ML engineers. Minimum: 3+ years experience on recommendation or ranking models, availability during Mon–Fri 9am–3pm Pacific Time. Preferred: strong Python or C++ experience, transformers/sequence modeling, and experience leading large projects.

Remote senior role responsible for designing, building, and shipping agent-driven CX applications and MCP servers, operating AWS (ECS, RDS, Lambda) infrastructure with Terraform, and producing production-quality Python and TypeScript code through GitLab CI/CD. Work includes integrations with enterprise systems (Salesforce, Gainsight, Snowflake, etc.), observability, security, testing, and documentation to enable handoff and shared ownership.

Chainguard is hiring a Senior Software Engineer for the Platform team to design, build, and evolve customer-facing backend services and public APIs. Requires 5+ years building production services in modern cloud environments, strong Go readiness, experience with microservices, containers, Kubernetes, and API design. Role is remote with a listed base salary range of $157,000–$184,000 USD.

Chainguard is hiring a Senior Software Engineer for the Platform team to design, build, and operate customer-facing backend services and public APIs used across multiple products. The role requires 5+ years building production services in cloud environments, strong Go proficiency (or fast ramp-up), experience with microservices, containers, Kubernetes, observability, and cross-functional collaboration with Product and Experience teams. Position is remote-first for Canada.

Work to finish or verify diagnoses of long-tail WebCompat/site-breakage bugs, reproduce and triage incoming reports, write WebCompat interventions and simple (often AI-assisted) fixes and land them. Requires solid web development (HTML, CSS, JavaScript), strong browser devtools and cross-browser debugging skills; Gecko and prior WebCompat/web-standards experience are preferred.

Twilio is hiring a Staff Mobile Software Engineer to build and own mobile SDKs that power authentication, fraud detection, and identity use cases as part of Stytch integration. The role requires 6+ years of mobile engineering experience (Android expertise in Kotlin/Java), strong software engineering practices, on-call availability, and occasional travel for in-person meetings.

Work on the Web Dependability Engineering team to identify why sites break with DuckDuckGo browsers, distinguish site/browser/privacy-caused issues, lead incident response for major site breakages, build durable cross-platform fixes and automation (including LLM agent pipelines), and reverse-engineer third-party code to produce minimal repro cases.

GitLab is hiring a Staff Fullstack Engineer for a new Data Products team to architect and build ingestion, modeling, and syncing of GitLab and third-party SDLC data into a near-real-time knowledge graph, integrate external systems (Jira, Zendesk, ServiceNow, observability), and enable consumption via Snowflake, Databricks, BigQuery and data-sharing APIs. The role requires deep full-stack experience (Go, Ruby, Node), familiarity with analytics/metrics platforms, graph data systems, CDC and warehouse integration, production AI orchestration, and operating multi-tenant SaaS and self-managed systems. This is a senior, 0-to-1 foundational engineering role with ownership of design, delivery, and cross-team coordination.

Join Reddit's ML Efficiency team to design and build systems, tooling, and optimizations that improve ML training and serving efficiency at scale. Requires 5+ years software engineering experience, strong Python skills, experience with distributed systems and ML infrastructure, and familiarity with GPU performance, distributed training frameworks (PyTorch Distributed, Ray, TensorFlow, Spark), and systems languages (Go/C++/Rust/Java).

Hands-on Senior Full Stack Engineer role requiring strong React, Node.js, JavaScript/TypeScript, and SQL skills. Responsible for end-to-end application ownership (frontend, backend, APIs, database, deployments, production support), troubleshooting, mentoring, and improving performance, security, and maintainability. Contract role; company willing to sponsor eligible employment visas.

Join Fleetio’s Marketplace Engineering team to design and implement marketplace features connecting fleets and maintenance shops, including scheduling, transactions, approvals, billing, shop integrations and data workflows. Role emphasizes maintainable, well-tested code, cross-functional collaboration with Product and Design, integrating external systems/APIs/webhooks, data modeling and performance optimization. Remote role open to candidates in the United States, Canada, or Mexico.

Build and operate backend systems for Stripe Billing and revenue/financial automation. Responsibilities include designing, building, testing, and shipping features for large-scale distributed systems, debugging production issues, and mentoring peers. Minimum 2+ years backend development experience; familiarity with Go, Java, or C/C++ and distributed systems is expected.

Join Coinbase's Retail DEX team to build systems that bridge off-chain and onchain trading, integrating new blockchains and decentralized exchanges (e.g., Base, Solana). Responsibilities include designing first-party smart contracts for trading primitives, scaling real-time data pipelines (100K+ messages/sec) for millisecond-latency processing, optimizing end-to-end trading execution, and advancing agentic-first development patterns. Requires 5+ years backend engineering experience and hands-on work with large-scale data infrastructure and onchain smart contracts.

Grafana Labs seeks a Senior Software (Database) Engineer to design, implement, test, and operate database components (ingestion, query planning, distributed execution, storage/table formats) for a multi-tenant SaaS data platform. The role emphasizes distributed systems, query engines, multi-cloud/cloud-native environments, observability, and languages such as Go, C++, or Rust. Remote applicants in the US or Canada are preferred.

Grafana Labs seeks a Senior Software (Database) Engineer to design, implement, test, and operate database components (ingestion, query planning, distributed execution, data/storage formats) for a multi-tenant SaaS data platform. The role involves building APIs for agent-facing retrieval, working across product and infrastructure, operating and instrumenting services with observability tools, and contributing to architecture and engineering practices. Preferred experience includes distributed systems, catalogs/table formats, query engines, cloud-native environments (AWS/GCP/Azure), and mastery of a language such as Golang, C++, or Rust. Compensation range for Canada is listed.

Work on the NeMo Helix Core platform to design and implement an agent execution and orchestration system targeting local/docker, Kubernetes, Slurm, and other backends. Requires designing APIs, plugin architectures, and improving reliability, observability, testing, and performance. Requires 10+ years of professional software engineering experience and strong Python, distributed systems, and cloud-native experience.

Senior-level contractor evaluates AI-generated coding interactions (Codex, Claude Code, Cursor) focusing on usefulness, reasoning, and engineering judgment. Remote, 10–20 hours/week, ongoing projects; requires strong TypeScript/JavaScript or Python experience and strong written/spoken English (B2+). Rate listed as $100–$200/hour.

Contract, remote role focused on evaluating interactions with AI coding agents (OpenAI Codex, Claude Code, Cursor). Engagement is 10–20 hours/week, $100–$200/hour, ongoing projects. Requires senior-level engineering experience, strong TypeScript/JavaScript or Python background, familiarity with AI-assisted dev workflows, and strong written/spoken English (B2+).