Role to scope, design, and implement high-performance numerical dense linear algebra software on GPUs, provide technical leadership, and work with product teams and customers. Requires a PhD or Master’s (or equivalent experience), 5+ years developing production software with CUDA and C++, strong fundamentals in finite precision arithmetic and numerical linear algebra. Locations listed: Germany, Poland, France (also remote).

Senior role to develop scalable library software and optimize high-performance parallel numerical applications across CPU and GPU (CUDA). Requires 5+ years experience, strong C/C++ and software-development skills, performance tuning, benchmarking, and collaboration across distributed teams. Python and familiarity with CI/CD and profiling tools are desirable.

Role involves understanding, profiling, and optimizing DL training and inference on state-of-the-art hardware; collaborating across research and engineering teams; implementing production-quality software and building automation tools. Requires 5+ years experience, strong DL and computer-architecture background, and programming skills in C++ and Python; GPU programming (CUDA/OpenCL) and LLM framework experience are advantageous.

Netguru seeks a senior backend engineer (freelance, B2B, remote - EU only) to design and build scalable backend systems, ETL pipelines, and high-performance APIs. Required skills include JVM languages (Java/Scala/Kotlin), relational and NoSQL databases (PostgreSQL, MySQL, MongoDB), cloud platforms (AWS/GCP/Azure), and experience with performance optimization and distributed systems. English proficiency at C1 is required; rate up to 30 EUR/hour.

Contract role to evolve EasyPay from an MVP into a scalable, multi-tenant digital financing platform for installers. Requires 5+ years of fullstack development with Python and React, experience with Agentic Assisted Development (e.g., Cursor), and familiarity with Django and FastAPI. Remote, full-time freelance engagement focused on automation of credit checks, contract generation, and digital signing.

100% remote freelance backend Kotlin engineer role, full-time, starting around mid July 2026 with minimum 6 months duration and a rate from 70 PLN/h. Requirements: good written and spoken English, located in the European Union, experience with Kotlin, Kubernetes, event-driven systems (Kafka), CI/CD for mobile and backend, DevOps collaboration, and familiarity with certification/compliance processes.

Join Flexera as a Senior Software Engineer to design and implement web applications using C#/.NET and JavaScript frameworks (React, Angular). Responsibilities include full product lifecycle work (requirements, architecture, coding, testing), performance and security improvements, prototyping and pair programming. Advanced English is mandatory.

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).

Remote Senior Technical Support Engineer role supporting enterprise customers of a cybersecurity SaaS. Responsibilities include troubleshooting complex frontend/backend issues, working with engineering/product/security teams, debugging and building small automation tools, and mentoring other support engineers. Requires 5+ years in software engineering or technical support, proficiency in Python, JavaScript, HTML, CSS, and experience with distributed systems and web security.

Intuition Machines seeks a Senior Frontend Engineer to design, develop, deploy, and operate secure, scalable front-end web, mobile, and customer-facing solutions. Responsibilities include writing maintainable, well-documented, and tested code (suitable for open source), participating in code reviews, unit testing, automation, and on-call rotation, and mentoring peers. Requires 4+ years of hands-on experience, strong JavaScript and React knowledge, solution architecture experience, and good communication skills. Interview process includes familiarity with AI coding agents; all hires require pre-employment screening and final in-person identity verification in the candidate's country of residence.

Work on core production backend code including distributed systems and ML paths. Responsibilities include designing, building, and maintaining backend services, implementing DevSecOps practices, monitoring and tracing, writing production-quality code with tests, and participating in code reviews and on-call rotations. Requires a minimum of 5 years' hands-on experience and expertise in Python plus at least one of Golang, Rust, or C++.

Intuition Machines is hiring a remote Security Software Engineer (candidates in Brazil and Argentina explicitly referenced). The role centers on systems programming and compiler development to advance detection/prevention of malicious activity, including work on obfuscation, virtual machines, cryptography, browser automation, HTTP/Web APIs and WASM. Responsibilities include development, monitoring, fault handling, metrics, automation, and deploying continuous updates. Candidates should have hands-on experience or demonstrated expertise; pre-employment screening and an in-person interview/identity verification in the candidate's country of residence are required.

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.

Remote senior front‑end software engineer (full‑stack generalist) to work directly with CEO/CTO on a serverless, multi-tenant telehealth platform. Requires strong experience with Next.js, TypeScript, React, Tailwind, DrizzleORM and backend familiarity (Rust, MySQL, Node.js); responsibilities include designing and implementing services, end-to-end ownership, and collaboration with product team.

Work directly with CEO/CTO to design and build Bask Health's serverless telehealth backend. Responsibilities include end-to-end ownership of services, writing well-tested code, prototyping with LLMs (Claude, Cursor), building for scale and reliability, and collaborating across the team. Required technical focus areas include Next.js, SST, TypeScript/JavaScript, Node.js, SQL databases and AWS services.

Bask Health seeks a front-end / full-stack software engineer to design, build, and ship product experiences for a serverless, multi-tenant telehealth platform. Core technologies called out include Next.js, Drizzle, SST, TypeScript, Three.js, React, Node.js and SQL. The role is AI-first (LLMs, Claude, Cursor) and emphasizes end-to-end ownership, prototyping with real users, reliability, accessibility, and performance.

Work directly with CEO/CTO to design and build Bask Health's serverless telehealth platform. Responsibilities include end-to-end ownership of services and surfaces, writing tested TypeScript/JavaScript code, prototyping with AI tools (LLMs, Cursor, Claude), and building for scale, performance, accessibility, and reliability using Next.js, SST, Node.js, SQL, Drizzle and AWS services.

1Password is hiring a remote Backend Developer for US and Canada-based candidates. The role involves coding, testing, debugging, delivering and maintaining production systems, collaborating with cross-functional teams, participating in planning, mentoring junior engineers, performing code reviews, and being part of an on-call rotation. Required: 2+ years of software development experience and proficiency in Golang; bonus for experience with Kotlin, Swift, Rust, or JavaScript.

Canonical is hiring Engineering Managers (including Senior Managers) to lead teams across Ubuntu Foundations, Server, Desktop and Debcrafters. Responsibilities include owning technical roadmaps, team growth and coaching, architecture and code reviews, planning and execution, working with product management, and contributing to upstream open source. Requires a software engineering background, technical leadership experience, professional English, and significant experience with one or more of Rust, Go, Python, Flutter or C/C++. Role is remote with travel up to twice a year for in-person team events.

Cloudera seeks a Staff Performance Engineer to build and run large-scale (1000+ node) performance benchmarks, profile query engines (using flame graphs, perf, low-level tools), and optimize execution engines, storage formats, and resource usage for Impala, Hive, and Spark. Requires strong systems and distributed-systems background and experience with C++, Java, or Scala. The role is not eligible for immigration sponsorship.