36 Founding Engineer jobs

Founding engineer roles building the first product at early-stage startups.

36 jobs

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36 jobs Posted Sort

Fluid Systems Engineer, Responsible Engineer

NewBe an early applicant North AmericaFull-time

The Fluid Systems Engineer is the Responsible Engineer for fluid systems that move, store, and control process fluids at a uranium enrichment facility. They set requirements and margins, design and analyze pressurized hardware with CAD and FEA, lead first-article builds and qualification testing, and own commissioning, operation, and design changes through the hardware's life.

100K – 205K $

Senior / Staff Robotics Security Software Engineer

NewBe an early applicant North AmericaFull-timeStaff

Senior/Staff Security Software Engineer designing and hardening security controls across Saronic's autonomous surface vessel fleet — spanning edge compute (Rust, NixOS, embedded Linux), vessel-to-vessel/cloud mesh networks (mutual TLS, key rotation, satellite/cellular/mesh radio), and cloud orchestration (cryptographic services, secrets management, CI/CD security). Hands-on implementation of secur

AI Authentication Automation CI/CD Cloud +8 skills

Senior Scientific Software Engineer

NewBe an early applicant HybridEuropeFull-timeSenior

Senior Scientific Software Engineer at AQEMIA, a drug invention startup, translating physics-based statistical mechanics and generative AI models into scalable, production-grade Python software. Day-to-day involves optimizing GPU-accelerated compute, building MLOps pipelines, designing modular scientific computing architecture, and collaborating with physicists and ML researchers to deploy cheminf

AI Airflow API CI/CD Cloud +15 skills

Frontera Health

Software Engineer - Integrations Platform

NewBe an early applicant RemoteLATAM

Backend-focused Software Engineer building and scaling APIs, data pipelines, and integration services for a healthcare platform, using Python/Node.js, workflow orchestration (Temporal/Airflow), and distributed systems in an early-stage environment.

Airflow API Data Modeling Data Pipelines Developer Experience +6 skills

Software Engineer (Internal Tools)

NewBe an early applicant On-siteNorth AmericaInternship

Software Engineer on the AI Operations Engineering team building internal tools, agents, and workflows (using Django, LangGraph, LangSmith) to automate operations for music, support, legal, and finance teams at an AI music company.

Agentic AI AI API Automation CRM +6 skills

189K – 248K $

Astro Mechanica

Senior Ground Software Engineer

NewBe an early applicant North AmericaFull-timeSenior

The Senior Ground Software Engineer owns Astro Mechanica’s aircraft data pipeline, from radio telemetry ingestion through real-time processing, time-series storage, backend APIs, and Mission Control visualization, targeting sub-one-second latency so operators can monitor aircraft health and send commands back. The role is at a venture-backed aerospace startup in San Francisco.

API Api Design Astro Cloud Data Ingestion +3 skills

175K – 250K $

Senior Software Engineer - Trading

New LATAM, North AmericaSenior

Senior Software Engineer building Alpaca's algorithmic trading platform, designing high-throughput, low-latency systems for brokerage services. Requires deep experience with trading/exchange systems (OMS, EMS), distributed systems, and languages like C++, Go, Rust.

AWS Cloud C++ Data Modeling Distributed Systems +9 skills

Engineering Manager

New RemoteNorth America

Engineering Manager to lead Pythagoras AI's engineering team, owning delivery across customer implementations and core product, managing people and projects, coordinating with healthcare stakeholders, and staying hands-on with TypeScript/Node.js and LLM-based conversational AI.

AI AWS Conversational AI GraphQL Hipaa +4 skills

Software Engineer II (AWS / Serverless / AI)

A hands-on software engineer who designs, builds, and operates scalable fullstack applications on AWS using Python, Java, and React, with serverless services (Lambda, Step Functions, API Gateway), Aurora/DynamoDB storage, and AI/LLM components via Amazon Bedrock, working closely with founders in a fast-moving startup.

Agentic AI AI API Aurora Automation +19 skills

50K – 60K INR

TeamWorx Security

Senior Software Engineer, Product

New RemoteNorth AmericaContractSenior

Senior Software Engineer working full-stack on TeamWorx Security's platform and products, building backend and frontend features, deploying cloud-based systems, and integrating AI/ML technologies. Requires React/Node.js experience, U.S. citizenship, and willingness to obtain a DoD security clearance.

Agile AI Cloud Machine Learning Node.js +1 skills

115K – 145K $

Stealth Startup

Founding Game Systems Engineer

New UKFull-time

Founding Game Systems Engineer at an early-stage football gaming startup in London. Builds game systems (player attributes, performance modelling, match logic, tactical behaviour), fantasy/multiplayer gameplay, backend infrastructure, and future football engine architecture using JavaScript/TypeScript, C++, Node.js, databases, and AWS.

AI API AWS C++ GitHub +4 skills

Founding Engineer (Early Employee #1–3)

New North America

Founding Engineer at Introd, an early-stage startup building a trust-graph relationship OS for founders/executives. You'll own core architecture (Neo4j graph engine, FastAPI backend, LLM integrations, OAuth data ingestion) to take the product from alpha to public beta, focusing on graph algorithms, viral growth systems, and production-grade infrastructure.

AI API Automation AWS CI/CD +10 skills

Senior Founding Engineer — Vyralnet

New North AmericaSenior

Senior founding engineer taking solo ownership of a pre-launch creator competition platform (iOS app, backend, Stripe, Meta API), partnering directly with the founder to launch and scale the product.

Software Engineer, Infrastructure (Staff+)

New RemoteNorth AmericaStaff

Staff+ Infrastructure Engineer at Lightfield, an AI-driven CRM startup, to architect and scale data infrastructure, backend services, and data models using TypeScript, React, Node.js, PostgreSQL, and LLMs.

AI CRM Data Modeling GraphQL LLM +7 skills

220K – 300K $

Founding Engineer

New RemoteNorth America

The Founding Engineer at Duets Network works remotely (~10-15 hrs/week) to set technology priorities, own architecture and infrastructure, and guide product strategy for an AI-powered startup-investor matching platform in sports and entertainment. Core stack: React, Node.js, PostgreSQL, AWS, GitHub, Stripe.

AI Analytics API AWS CI/CD +9 skills

Principal Systems Engineer

New North AmericaPrincipal

Lead end-to-end systems engineering for space missions, translating mission objectives into requirements, building MBSE/SysML models, and running verification and validation while mentoring cross-functional hardware, software, and operations teams.

Agile DevOps SysML

Technical Co-Founder/Founding Engineer

New APAC, North America

The Technical Co-Founder/Founding Engineer will own Vedicscan's technical foundation, leading architecture, development, and deployment of an AI-powered astrology platform. Day-to-day work involves building APIs and microservices with JavaScript/TypeScript or Python, integrating AI/LLM models, and managing cloud hosting and DevOps on AWS, GCP, Supabase, or Firebase.

AI API AWS DevOps Django +14 skills

Software Engineer

Founding Engineer at Fuze, a MENA digital assets infrastructure startup, helping shape technology and culture while building APIs that let banks, fintechs, and super apps offer crypto rewards cards and white-label brokerage. Day-to-day involves full-stack problem solving, debugging, and learning across front-end, back-end, or DevOps.

API Cryptocurrency DevOps Distributed Systems Fintech

Marble Technology Inc.

Senior Software Engineer

RemoteNorth AmericaSenior

Senior Software Engineer at Marble Technology Inc., an early-stage AI-powered tax platform for accounting firms. The role involves full-stack ownership of architecture and product development using React, Remix, TypeScript, Node.js, Postgres, Weaviate, AWS, Kubernetes, Terraform, and Airflow.

AI Airflow AWS ETL Fastify +9 skills

UAV Systems (Software Engineer)

EuropeFull-time

Software Engineer developing UAV software architecture — FPV drones, VTOL platforms, and drone-interceptors — including flight control, ground stations, telemetry, radar/camera integration, and Ardupilot/Mission Planner integration.

AI API Computer Vision C++ Docker +11 skills