2,916 Founding Engineer jobs
Founding engineer roles building the first product at early-stage startups.
Software Engineer - Platform & Infrastructure
Platform & infrastructure engineer at govtech startup Promise: builds and owns GCP infrastructure, Kubernetes clusters, Terraform IaC, and CI/CD, plus internal tooling and AI-driven automation for deployments, incidents, and compliance evidence. Hybrid role based in Washington, D.C. (~4 days/week in office).
Web Developer
Full-stack web developer at EdTech startup Tutearn Corp, designing, building, and maintaining responsive, secure web applications for its digital learning platform in Bonifacio Global City, using front-end frameworks (React/Next/Vue/Angular), back-end tech (Node/PHP/Python), and SQL/NoSQL databases.
Software Engineer, Reporting & Fee Management
Builds reporting and fee-management capabilities for Performativ's wealth-management platform, turning complex portfolio data into accurate client reports and fee arrangements, including self-service configuration and AI-assisted workflows. Fintech startup based in central Copenhagen; specific tech stack is flexible.
Staff Software Engineer – Payments & Ledger
Staff Software Engineer building and architecting financial systems (ledger, payments, money movement) using Java, Postgres, AWS, and occasional React. Role involves designing reliable backend services, guiding technical decisions, and mentoring engineers.
Senior Software Engineer (remote from GMT-7 to GMT+4 timezones)
Senior Software Engineer building core backend parts of Collectly's healthcare patient-billing platform, owning features end-to-end from requirements to rollout and maintenance. Python-first stack: Python, Flask, SQLAlchemy, PostgreSQL, Redis. Fully remote across GMT-7 to GMT+4 timezones.
Associate Software Engineer (College Grad 2027)
Solace Health, a Series C healthcare startup, is hiring a 2027 college graduate for an in-person Associate Software Engineer role in Redwood City (3 days/week in office, start July 2027). The engineer ships full-stack features from week one using a TypeScript stack: NestJS, TypeORM, Postgres, Redis, React, and Tailwind.
Software Engineer
Software Engineer at Abode Money, a fintech helping homeowners save on property taxes, insurance, and mortgages. You'll own core services end to end—from architecture to production reliability—turning messy county rules and documents into resilient, AI-assisted systems, working in person with founders in Austin 5 days a week.
Senior Software Engineer
Senior Software Engineer at a climate tech company building backend systems that optimize renewable energy and battery storage using Python, machine learning, and real-time data pipelines.
Member of Technical Staff - Clusters
Early engineer building Sail's Clusters infrastructure: software that automatically provisions, schedules, and manages large GPU compute fleets across clouds for LLM inference and AI agent hosting. Day-to-day is Kubernetes-centric reliability work — scheduling, high availability, fault remediation, and monitoring.
Member of Technical Staff — Post-Training Infrastructure
Moonlake, a seed-funded AI startup in San Francisco building interactive 3D world models for robotics and embodied AI, seeks a Member of Technical Staff to lead post-training infrastructure: building RL pipelines, fine-tuning, reward modeling, and scalable multi-GPU training systems for vision-language and code-generating agents.
Chip Simulation Software Engineer
Software engineer on Etched's chip simulation team: design, develop, and test C/C++ simulations of Etched's custom AI inference chips, build debugging tooling, and help validate the hardware-software co-design. Fully in-person role at the San Jose (Santana Row) office.
Software Engineer
Software Engineer at Zenos, a highly funded stealth AI/robotics startup in San Mateo delivering AI productivity to the physical world. You'll design and scale robust systems across the stack (with some hardware work), help set coding standards and tech stack, and mentor new hires — using Python, C++, and Rust, with AI/ML and Linux/systems skills valued. ~4 days per week in-office.
Software Engineer II (REMOTE)
Software Engineer II (remote, USA) at TENEX.AI, an AI-native managed detection and response (MDR) cybersecurity startup. Day to day you design and deploy backend services/APIs and build frontend apps across the full stack, using Go/Python, React/Next.js-style frameworks, PostgreSQL/MySQL, and GCP/AWS, with AI/ML exposure as a plus.
Senior/Staff Software Engineer, Enterprise AI Platform
First engineer on OpenArt's enterprise platform, building workspaces, RBAC, SSO/SAML, audit logs, usage-based billing (Stripe) and SOC 2 groundwork. Full-stack: React/Next.js admin and billing UIs plus scalable multi-tenant backend and infrastructure.
Principal Software Engineer, Fintech
Staff/Principal-level architect who owns Plug's money-facing systems — ledger, payment disbursement, settlement, reconciliation, and lien/title payoffs — designing auditable, fault-tolerant infrastructure that integrates with banking partners and processors under regulatory constraints. Onsite in Los Angeles; requires deep payments and distributed-systems expertise.
Member of Technical Staff - Research Engineer, RL Environments
Experienced ML engineers design and build reinforcement learning environments and reward functions that teach frontier LLMs to do ML research/engineering work. The role blends research and coding — reading papers, running experiments, and shipping environments into production training runs using Python, PyTorch/JAX, and LLM training/inference infrastructure.
PHP Developer
Part-time (10 hrs/week) internship-style PHP developer at Inwit, Canada's first zero-waste takeout app in Toronto. You build server-side logic, maintain the central database, and ensure performance of back-end services in PHP, while integrating front-end elements built by teammates.
Senior Software Developer
Senior developer at White Swan Data, a startup using statistical models to find inefficiencies in iGaming, building low-latency automated trading systems. Day to day: real-time data pipelines, trading platform integrations, and GCP infrastructure. Core stack: Python and Java on GCP with Docker.