2,918 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Senior Software Engineer
Senior Software Engineer at Zeroport in Herzliya joins a small, fast-moving team building hardware-enforced 'Least Agency' security that physically limits what AI agents and humans can do on critical networks. The role owns problems end-to-end across software, networking, and security, and works daily with AI coding agents.
Senior Software Engineer
Senior engineer on the small founding team at Tenext.ai building AI voice/chat agents that serve live customers of insurers and financial-services firms. Owns features end to end: conversational flows, RAG pipelines, LLM tuning, and real-time voice latency/cost — using Python/FastAPI, NestJS, and Next.js.
Software Engineer, Peoeple Ecosystem
First software engineer on Halter's People Ecosystems team in Auckland, building internal people and performance products (hiring, HR, payroll, performance data) full-stack — React front ends, Python/Node services, APIs and data pipelines. Seeks ~4-5 years' full-stack experience; AI and workflow-tool know-how is a bonus.
Senior Golang Developer
Senior Golang Developer at Super Six Sports Gaming (maker of the Fantasy Akhada fantasy sports app) in Noida: build REST/GraphQL microservices, design DB architecture, and support build/deployment in a high-growth sports-tech startup. Core stack: Go, MySQL, Redis, Docker, gRPC, RabbitMQ/Kafka.
Engineering Manager
Engineering manager leading a team of backend engineers building a gaming product, liaising with product, acquisition and retention stakeholders. A hands-on role requiring Java/Spring/Akka or JavaScript/Golang plus scalable distributed-systems tech such as MySQL, Kafka, MongoDB, Redis, Docker and Kubernetes.
Golang Developer
Back-end Go developer joining an AI company's R&D team in Porto or Coruña, building APIs and intelligent services. Day to day involves Go/API development, setting up CI/CD pipelines, monitoring and logging, and working with Kubernetes, Docker, Terraform and cloud platforms.
Principal Software Engineer
Principal Software Engineer at a remote-first crypto-custody cybersecurity startup: lead complex backend/API and infrastructure projects, ensure scalability, security and code quality, and drive the SDLC with the CTO/CPO. Core stack: Rust and/or TypeScript, PostgreSQL, AWS/GCP, REST/GraphQL APIs, Datadog.
Software Engineer
Software engineer at Dynamify in London, building a personalised consumer ordering platform that boosts per-square-metre profits for retailers (clients include Sodexo and FAT Brands). Day to day: designing and deploying JavaScript applications with high quality standards; degree in CS or a related field required. Visa sponsorship offered.
Senior Software Engineer
Hands-on Senior Software Engineer for a Barcelona e-commerce/last-mile logistics startup: building the core platform (Java, Spring Boot, Angular, AWS) that connects external e-commerce, carriers, and WMS systems, while mentoring engineers and working closely with product and engineering management. Remote with occasional Barcelona office visits.
Remote Ruby Developer
Fully remote backend developer building a greenfield Ruby on Rails product from scratch at an early-stage company that works API-first. You'd join an agile, English-speaking team shaping product and culture, with German as a plus.
Desarrollador Python Developer
On-site Python developer at a financial startup in Mexico City (Bosques de las Lomas), building and maintaining internal systems and developing new tools. Core stack: Python, Django, JavaScript, Git, and MySQL; pays up to MXN 45,000 gross monthly.
Software Engineer, AI for Smart Buildings (Hybrid, Stock Options)
Software engineer on Myrspoven's AI team in Stockholm (hybrid) who improves the model that optimises buildings and builds the data/platform foundation it runs on. Owns the full lifecycle from data to deployment, works with AI agents, and collaborates with Platform, Product, Customer Success and partners to ship reliable AI features.
Software Engineer – AI Team (Data & ML)
Software engineer on Myrspoven's AI team in Stockholm, improving the ML model that optimises heating, cooling and ventilation in buildings and building the data pipelines and platform around it (Python, Spark, Airflow, JAX, Kubernetes, Azure). Hybrid role with at least 3 days a week in the Södermalm office.
Staff Software Engineer
Builds county-level property valuation models end to end for a seed-stage startup automating property tax appeals: selecting comparable sales, measuring market adjustments, and producing the evidence packets homeowners file. Core stack is Python and SQL, paired with real property-appraisal domain expertise. Remote anywhere in the US.
Senior Software Engineer
Senior hands-on engineer at a small startup who builds backend services and AWS cloud infrastructure: IaC with CDK/CloudFormation, Python/Bash automation, Lambda/serverless APIs, and CI/CD, while owning production troubleshooting end-to-end. Fully in-office, 5 days a week, in Hazlet, NJ.