16,818 Startups jobs
Open tech roles at startups.
Software Engineer (F/H)
As an AI System Engineer at Illuin in Paris La Défense, you design, build and industrialize AI/data solutions for demanding client projects and the company's own products: custom software, scalable data pipelines, and MLOps/AI systems on cloud or on-premise, in agile sprints with direct client interaction. Core stack spans Python/Java/TypeScript, SQL/NoSQL, data architectures, Docker, CI/CD.
Backend Architect
Hands-on Backend Architect serving as the technical authority across three cross-functional teams at Faye, a digital travel insurance company — owning backend architecture, driving engineering standards, and tackling scalability, technical debt, and performance. Core stack includes Node.js and NestJS.
Quality Assurance Officer
A pharmaceutical quality role at Leafio (Montu): the Quality Officer runs day-to-day quality activities for a UK medicines wholesale operation — maintaining the QMS (SOPs, deviations, CAPAs, change control, document control), supporting batch traceability, complaints and audits, and ensuring GDP and MHRA compliance.
Fullstack Engineer (JS)
Builds AI-powered products and internal systems end-to-end — from architecture through development and deployment — at a fast-growing startup, automating workflows and embedding AI across the business. Core tech: JavaScript fullstack, APIs, databases, cloud infrastructure, with AI/LLM and agentic automation exposure.
Senior Backend Engineer
Senior Backend Engineer at a fast-paced London startup building an API-driven platform that generates high-quality test data for development and QA teams. You'll build product features, improve backend performance and scalability, and help shape technical direction using Kotlin/Java and Spring Boot in a hybrid setup.
Backend Engineer (Software)
Security-focused backend engineer at an early-stage AI startup in London. Day to day you threat-model and penetration-test AI-driven workflows, own identity and access controls, and contribute backend code to fix vulnerabilities and embed security across the product alongside founders and engineers.
React Native Developer
Builds tested, clean, scalable mobile app features with React Native (plus React and GraphQL) for a UK-focused startup, working in agile squads within a 40-strong engineering team, rotating quarterly between squads and collaborating cross-functionally while balancing rapid delivery with long-term platform health.
Software Engineer, Backend
Build backend systems that make Adaptyv's automated biology lab programmable: data pipelines for large-scale protein characterization data and APIs that integrate lab instruments and robotics, working closely with scientists. Stack: Python, TypeScript, Postgres.
Software Engineer, Product
Full-stack product engineer on LabOS, Adaptyv Bio's platform that orchestrates an automated wet lab: building APIs, scheduling systems, and AI agents so scientists and AI models can run biology experiments. Stack is TypeScript, React, Node, and Postgres.
Lead Software Engineer
Hands-on lead engineer at a Zurich startup building Solskin, a climate-adaptive solar facade that uses AI to control building shading and energy use. You code daily across the full stack — Python/FastAPI backend, PyTorch controllers, embedded C/C++ on STM32, React frontend — and set software direction with the CTO.

Product Designer
NewCore, a cybersecurity startup building an identity platform that secures and governs both human and AI-agent identities, is hiring a Product Designer in Tel Aviv-Yafo. You own end-to-end design across admin and end-user web/mobile surfaces — defining new interaction patterns for agentic identity, building the design system, and shipping with product and engineering, primarily in Figma and AI-na
Full Stack Engineer
Full stack engineer at Jeen AI building enterprise generative-AI platforms, splitting time between core product development (React, TypeScript, Python, NestJS) and configuring AI agents, automations, and integrations in customer environments, including supporting POCs.


DevOps Engineer
ZyG, an AI-native eCommerce startup building an 'Agentic Operating System' for DTC scale, seeks a DevOps Engineer in Tel Aviv to run CI/CD (GitHub Actions, Bazel, Argo CD), GCP infrastructure as code (Terragrunt/OpenTofu), data pipelines (Airflow, dbt, BigQuery), and observability (Datadog, Grafana) for a platform where AI agents write much of the code.
Technical Product Owner - GenAI Produkte (m/w/d)
Technical Product Owner for GenAI products at a corporate startup in Frankfurt: owns the product roadmap and prioritized backlog, runs agile sprint planning with engineering teams, and evaluates LLM frameworks and AI integrations. Requires hands-on GenAI experience, Python or Java, agile methods, and fluent German and English.
Intern - Business Analyst
Business Analyst Intern at Picnic in Amsterdam analyzing data, identifying opportunities, and supporting strategies to improve grocery shopping operations using SQL, Python, and business consulting skills.
Commercial Data Analytics Intern (H/F)
Business Analyst Intern analyzes data and supports strategies to improve Picnic’s grocery operations, using SQL and Python in a fast-paced startup environment.
Internship - Business Analyst (m/w/d)
Business Analyst Intern at Picnic analyzes data, identifies opportunities, and supports strategies to improve grocery shopping operations in a fast-paced startup environment.
Thesis Internship - Business Analyst (m/w/d)
Business Analyst intern at Picnic analyzes grocery delivery data, identifies opportunities, and supports strategies to improve operations in a fast-paced startup environment.
Working Student - Business Analyst (H/F)
A working student in Paris analyzes grocery delivery data, models business opportunities, and collaborates with teams to improve Picnic’s operations using SQL and Python.
Commercial & Analytics Projects - Mid-level (H/F)
Mid-level analyst builds data-driven solutions for Picnic’s grocery app and logistics, using Python/SQL to optimize customer experience and sustainability in a fast-paced European tech-retail scale-up.