16,810 Startups jobs
Open tech roles at startups.
FULL STACK DEVELOPER (FRONT & BACK END)
Full stack developer at ÉSLUMIÈRE, a luxury e-commerce startup, building its fully custom v3.0 platform from the ground up. Day to day: React/Next.js front-end plus back-end work, API integrations with luxury brand systems, and product catalogue, checkout, order, and returns/exchanges workflows.
Senior Full Stack Developer in Madeira
Senior full stack developer for a high-growth digital subscription and digital marketing startup's new tech hub in Madeira, Portugal; on-site with WFH Fridays. Day to day: Node.js/TypeScript backend with Postgres/Knex, AWS serverless infrastructure (Lambda, DynamoDB, RDS), and React/Next.js front ends. €80k–€100k plus bonus and benefits.
Junior Backend Developer - Sports Trading
Junior backend developer building real-time sports trading infrastructure in Lisbon (hybrid): designing and deploying scalable APIs and databases that aggregate odds and liquidity from multiple sportsbooks. Core stack is SQL, Node.js and TypeScript, with Rust and Python as pluses.
Full-Stack Developer Junior
Junior full-stack developer at CHRLY Portugal, Fujitsu's tech-recruitment corporate startup. Day to day: build and deploy web applications across the stack — responsive front-ends (React/Angular/Vue), back-end services (e.g. Express, Django, Spring Boot), SQL/NoSQL databases and REST APIs — using Git and CI/CD on cloud platforms like AWS or Azure.
Full stack developer for luxury brands
Full stack developer building a custom luxury e-commerce platform from the ground up (v3.0), working across React/Next.js front-end and Node.js/Python back-end, with API integrations to Shopify and ODOO, catalogue, checkout, and returns workflows. Based in Portugal, onsite, at a startup serving international luxury brands.
API Backend Developer - Sports Trading
Backend developer building and optimizing 55 Tech's odds feed API infrastructure for sports and esports data — managing databases, data mapping, scheduling systems, and a scraping network with a focus on reliability and low latency. Core stack is Python, with PostgreSQL, Git, Node.js, React, and Supabase as pluses.
Senior Python Developer with Blockchain Experience
Senior Python developer at GenLayer Labs (by YeagerAI), building a custom Python interpreter for GenLayer, an AI-integrated blockchain. Day to day: advanced Python work on core language features, performance optimization, and security for sandboxed execution environments, integrated with blockchain functionality.
GTM Analyst
Founder's-office GTM Analyst at CloudVictor, a deeptech startup building SaaS to optimize AWS cloud costs, security, and reliability. You'd build and run the lead funnel, own CRM data and automations, and design internal systems using APIs, AI agents, and low-code tools — living at the company's Hacker House in Bengaluru.
Senior BackEnd (Physical design) Engineer
Leads full RTL-to-GDSII backend flow for semiconductor design, focusing on timing closure, low-power optimization, and physical implementation (floorplanning, CTS, IR-drop) while collaborating with design teams and external vendors.
QA Automation Engineer
QA Automation Engineer at Cephable turns real user workflows into reliable end-to-end tests for its on-device AI automation product, covering Windows, macOS, iOS, and Android apps plus Web, .NET, and Unity SDKs across varied CPUs, GPUs, and NPUs. Strong emphasis on accessibility and testing non-deterministic AI behavior; remote in the US, Boston area preferred.
Executive Assistant to Founders
About Exa We raised a $250M Series C to build the search engine for AIs. Led by a16z, with existing investors Benchmark, Lightspeed, and YC doubling down, the round brings Exa's valuation to $2.2 billion. Read more Exa…
FULL STACK ENGINEER
Full-stack engineer at an early-stage London company building AI-powered business software. You ship features end-to-end: React/TypeScript frontends, Python (FastAPI/Django) backends, PostgreSQL data modelling, and AWS deployments with CI/CD and containers, integrating AI capabilities. Base salary up to £80,000 plus bonus and pension.
DevOps Engineer
Senior DevOps Engineer at Lorum, a London fintech building clearing and treasury infrastructure. You own AWS infrastructure-as-code (Terraform/Atlantis), GitHub Actions CI/CD, observability and production reliability for the clearing platform, working with Security on SOC 2/ISO 27001. Hybrid: 3 days/week in the Fitzrovia office.
Software Engineer - Applications
Builds the engineering bridge between Elorian AI's Glimpse multimodal model and real-world deployments: reference architectures, developer SDKs, evaluation harnesses, and end-to-end enterprise applications. Python-first (TypeScript/Go/Rust a plus), on-site in Palo Alto, partnering with founders and early design partners.
Senior DevOps Engineer — AI for Banks (Remote)
First DevOps hire at Sax AI owning infrastructure end to end: driving multi-cloud deployments and secure, observable operations so AI-powered agents can run inside banking clients' clouds. Fully remote role on UK/EU hours with shared on-call and 25 days of holiday.
Software Engineer
Backend-leaning full-stack engineer at a profitable AI travel startup building a platform to discover and book luxury hotels, villas, yachts and private flights. Day to day: Python/FastAPI supplier integrations, PostgreSQL data architecture, Redis/GCP infrastructure, LLM-powered search and recommendations, plus some React/TypeScript.
Desarrollador Backend Java – Microservicios Sector Público
Senior backend developer building scalable web applications and RESTful APIs with Python and Django for an expanding tech startup, working fully remote from Madrid. Day to day: API design, code reviews, performance and database optimization, and production debugging alongside frontend, product, and DevOps teams.
Staff Product Manager, AI
Staff Product Manager leading end-to-end AI product development for a consumer social commerce startup in Palo Alto, reporting to the CEO. Builds generative prompting workflows and personalization, tracks accuracy/conversion/automation metrics, and ships fast in an ambiguous, high-ownership environment.
GTM Systems Engineer
Builds and scales the Salesforce architecture and broader go-to-market tech stack (Outreach, enrichment tools, AI/LLM workflows) behind Roboflow's revenue team — data models, forecasting infrastructure, BI dashboards, and data quality — growing into ownership of the GTM systems as the function scales.
Member of Technical Staff, Agents
Build autonomous AI agents that handle executive workflows end-to-end, plus the evaluation and monitoring systems that verify their reliability. Day to day is Python/SQL data work, designing evals and simulations, debugging production failures, and shipping agent capabilities (Django/React/TypeScript) on-site in Palo Alto.