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2,916 Founding Engineer jobs

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

2.9K jobs
Ditto AI
9 views 5 months ago

Member of Technical Staff

Open 144d On-siteNorth America 4 questions SF Office

About the Role Ditto is building the agentic social network — where AI agents don’t just assist users, they run the system: understanding people, making decisions, learning from outcomes, and continuously improving how…

A/B Testing Agentic AI AI API Distributed Systems +15 skills
120K – 300K $
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Swap
14 views 11 months ago

Senior Software Engineer

Open 144d HybridUKSenior Salary + equity 3 questions
United Kingdom
London

About Swap Swap is the infrastructure behind modern agentic commerce. The only AI-native platform connecting backend operations with a forward-thinking storefront experience. Built for brands that want to sell anything…

Agentic AI AI API AWS CI/CD +11 skills
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Pennylane SAS Backed by Sequoia
27 views 5 months ago

Senior Engineering Manager

Open 144d RemoteEuropeFull-timeSenior 3 questions
France

Are you looking to have an impact on the daily life of millions of entrepreneurs in France and Europe? Do you thrive in a trustful, fast-paced environment? Do you feel like our Engineering principles are aligned with…
Airwallex
19 views 5 months ago

Staff Software Engineer, AI Tooling

Open 144d HybridNorth AmericaStaff 10 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
San Francisco

About Airwallex Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 675,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through…

AI Automation Backbone.js Cloud C++ +7 skills
200K – 280K $
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Hadrian Backed by a16zBacked by Founders Fund
18 views 7 months ago

All Levels: Software Engineer, Builder Tools

Open 144d On-siteNorth AmericaFull-timeLead 7 questions
United States
San Francisco Bay Area, CA

Hadrian - Manufacturing the Future Hadrian is building autonomous factories to reindustrialize America. By combining AI, advanced software, robotics, and full-stack manufacturing, we help aerospace and defense…

AI API CI/CD Claude Code CLI +9 skills
173K – 321K $
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EliseAI
23 views last year

Founding Software Engineer | Healthcare

Open 144d On-siteNorth America Salary + equity 7 questions
United States
New York City

About EliseAI At EliseAI, we're improving the industries that matter most: housing and healthcare. Everyone needs a place to live and access to quality healthcare, yet both are often harder to secure than they should…

Accessibility Agentic AI AI AWS CI/CD +9 skills
240K – 300K $
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EliseAI
22 views last year

Senior Software Engineer

Open 144d On-siteNorth AmericaSenior Salary + equity 7 questions
United States
New York City

About EliseAI At EliseAI, we're improving the industries that matter most: housing and healthcare. Everyone needs a place to live and access to quality healthcare, yet both are often harder to secure than they should…

Accessibility Agentic AI AI AWS CI/CD +9 skills
240K – 300K $
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EliseAI
19 views last year

Staff Software Engineer

Open 144d On-siteNorth AmericaStaff Salary + equity 7 questions
United States
San Francisco

About EliseAI At EliseAI, we're improving the industries that matter most: housing and healthcare. Everyone needs a place to live and access to quality healthcare, yet both are often harder to secure than they should…

Accessibility Agentic AI AI AWS CI/CD +2 skills
300K – 400K $
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Zip Backed by Y CombinatorBacked by BOND
29 views last month

Senior Software Engineer, Developer Platform

Open 144d HybridNorth AmericaSenior 5 questions
Toronto

Senior Software Engineer on Zip's Developer Platform team in Toronto builds internal tooling — CI pipelines, testing frameworks, and deploy/release processes (canaries, traffic replay) — so hundreds of engineers can ship enterprise procurement software with high velocity, while driving adoption of AI-assisted development tools. Core stack includes GitHub, GitLab, Buildkite, Jenkins, and Docker.

Agentic AI AI Docker Fintech GitHub +3 skills
200K – 250K CAD
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Apex Technology, Inc.
29 views 2 months ago

Flight Software Engineer (Early)

Open 144d On-siteNorth AmericaFull-time Salary + equity 1 question
United States
Los Angeles

Design, build, and own the flight software that autonomously operates Apex's satellite buses — mission-critical systems running 24/7, from initial design through deployment, testing, and launch/early-operations support. Core stack includes Python, C++, Rust, real-time distributed systems, embedded Linux/Yocto, and satellite protocols like CCSDS and ECSS.

Apex C++ Distributed Systems Embedded Linux Integration Testing +9 skills
125K – 138K $
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Apex Technology, Inc.
12 views 2 months ago

Senior RF/Comms System Engineer

Open 144d North AmericaFull-timeSenior Salary + equity 3 questions
United States
Los Angeles

Senior RF/Comms Systems Engineer at Apex (Los Angeles, onsite) driving clean-sheet design of RF, digital, and optical communications systems for satellite buses and ground stations: requirements, link budgets and simulations, MATLAB analysis tools, supplier selection, and hardware integration/test. Requires 5+ years of spacecraft RF/telemetry experience.

Apex Itar MATLAB
175K – 215K $
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Zip Backed by Y CombinatorBacked by BOND
20 views 4 months ago

Software Engineer, Core Infrastructure (Mid-Senior level)

Open 144d HybridNorth AmericaSenior 5 questions
United States
San Francisco

About Zip Zip is the AI platform for enterprise procurement — built for humans and agents working together. By orchestrating procurement across teams, tools, and suppliers with the help of AI agents, companies can…

Agentic AI AI AWS Datadog Fintech +4 skills
160K – 210K $
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Apex Technology, Inc.
30 views 2 months ago

Lead Mission Integration Engineer

Open 144d On-siteNorth AmericaFull-timeLead Salary + equity 3 questions
United States
Los Angeles

Lead the mission integration team at Apex, a startup manufacturing satellite buses in Los Angeles: define end-to-end mission architecture and act as senior technical liaison for spacecraft missions in a ~50% management / 50% hands-on role. Core work spans orbital mechanics and trajectory analysis, coupled loads/thermal/EMC assessments, payload integration, and design reviews using tools like STK,

Apex Business Development Embedded Systems FMEA Itar +2 skills
175K – 210K $
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Northwood Space Backed by a16z
27 views last month

Senior RF Systems Engineer (Portal)

Open 144d On-siteNorth AmericaFull-timeSenior 8 questions
United States
Torrance, CA

Designs and tests RF and antenna systems for satellite ground stations, including phased arrays and beamforming, using MATLAB/Python and RF test equipment.

Embedded Software EVM FPGA Itar MATLAB +1 skills
140K – 226K $
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Cognition Backed by a16zBacked by AccelBacked by GreylockBacked by BONDBacked by Founders Fund
28 views 3 months ago

Software Engineer

Open 144d On-siteNorth America Salary + equity 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
San Francisco

Build core agent infrastructure and improve Windsurf as an AI-native IDE, shipping systems that power Devin’s long-horizon task execution and real-time code understanding for millions of developers.

Agentic AI AI Developer Experience Distributed Systems LLM +1 skills
260K – 300K $
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d-Matrix
23 views 3 months ago

Principal System Software Engineer, AI Inference Execution

Open 144d HybridNorth AmericaPrincipal 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Santa Clara

Principal engineer builds and scales the AI inference software stack for d-Matrix’s custom compute engine, optimizing hardware-software co-design and collaborating across ML, compilers, and hardware teams.

AI Cloud C++ Deep Learning Distributed Systems +13 skills
195K – 285K $
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d-Matrix
18 views last month

Staff Systems and Platforms Software Engineer

Open 144d HybridNorth AmericaStaff 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Santa Clara

Staff engineer owning the runtime software for d-Matrix's in-memory compute silicon used for AI inference in the datacenter. Day to day: architecting runtime and distributed scale-out systems software, writing low-level Linux drivers and C/C++ systems code, and owning runtime performance across the SoC's multi-core CPU subsystems.

AI C++ Embedded Software GPU Linux +1 skills
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d-Matrix
18 views 3 months ago

Staff Software Engineer, SIMD Kernels

Open 144d HybridNorth AmericaStaff 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Santa Clara

Develops and optimizes SIMD kernels for AI operators (e.g., softmax, layer norm) to run on next-gen hardware, focusing on performance and SDK usability for generative AI compute engines.

AI Cloud C++ CUDA Deep Learning +6 skills
190K – 300K $
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d-Matrix
23 views 3 months ago

Principal Software Engineer, SDK & Lowering Stack

Open 144d HybridNorth AmericaPrincipal 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Santa Clara

Principal Software Engineer to architect and build the SDK and lowering stack for d-Matrix’s custom dataflow AI hardware, using C/C++ and Python in Linux.

AI API CI/CD Cloud C++ +5 skills
190K – 300K $
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d-Matrix
22 views 4 months ago

Principal Software Engineer, Kernels

Open 144d HybridNorth AmericaPrincipal 2 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Santa Clara

Develop and optimize software kernels for next-gen AI hardware, mapping computational graphs from ML frameworks to d-Matrix's compute engine architecture. Work across the full SW stack with compilers (MLIR/LLVM/TVM), implement ML operators (GEMMs, convolutions, softmax), and collaborate with hardware and compiler teams. Core tech: C/C++, Python, CUDA, SIMD vector processors.

AI Cloud C++ CUDA Deep Learning +6 skills
195K – 285K $
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