Founding AI Engineer (Senior/Staff) - VC Backed Startups
Signal Fire Inc
Join SignalFire’s Talent Network for Founding AI Engineer Roles at VC-Backed Startups
This is not an application for a specific job. Instead, this is a way to get on the radar of VC-backed startups that are actively hiring AI talent. If you have any questions, please direct inquiries to View email address on us.fitly.work.
At SignalFire, we partner with top early-stage startups that are shaping the future of technology. Our portfolio spans 200+ innovative companies across AI, cybersecurity, healthtech, fintech, developer tools, and enterprise SaaS.
We’re looking to connect with exceptional Founding AI Engineers who are excited about joining high-growth startups as core technical leaders. By joining SignalFire’s Talent Network, your profile will be shared with our portfolio companies, giving you visibility into exclusive early-stage opportunities that may not be publicly listed.
Who Should Join?
We’re looking for AI engineers who are:
✔ Passionate about building AI/ML models from the ground up and deploying them in production
✔ Excited about joining early-stage startups and working directly with founders
✔ Interested in shaping AI strategy and leading the development of AI-powered products
Typical Roles & Responsibilities
Designing, developing, and deploying machine learning (ML) and deep learning models
Building scalable data pipelines for preprocessing, feature engineering, and model training
Optimizing and deploying AI models for real-time and batch processing
Working closely with founders to align AI strategies with product and business goals
Researching and integrating state-of-the-art AI methodologies
Developing and optimizing RAG pipelines, agent architectures, and LLM-powered systems
Common Qualifications
While each startup has its own hiring criteria, many founding AI roles in our network look for:
3+ years of experience in machine learning, deep learning, or applied AI
Strong Python skills with frameworks like TensorFlow, PyTorch, or JAX
Experience with big data tools (Apache Spark, Kafka, Hadoop) and MLOps platforms
Familiarity with cloud environments (AWS, GCP, Azure) and containerization tools (Docker, Kubernetes)
Startup experience or an interest in early-stage environments is a plus
Technologies You Might Work With: Python, TensorFlow, PyTorch, JAX, scikit-learn, Kubernetes, Docker, MLflow, TFX, Kubeflow, FastAPI, Flask, SQL, NoSQL, Apache Spark, Kafka, Hadoop, Flink, Airflow, AWS (SageMaker, Lambda, S3), GCP (Vertex AI, BigQuery), Azure (ML Studio, Synapse).
What Happens Next?
Submit your application to join SignalFire’s Talent Ecosystem.
We review applications on an ongoing basis to identify strong candidates.
If there’s a match, a SignalFire talent partner or a leader from one of our startups may reach out directly.
No match yet? We’ll keep your profile on file for future AI/ML roles in our portfolio.
$150k - $250k
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Our client, an early-stage AI startup, are hiring a Founding Applied AI Engineer to join their team in New York. The successful candidate will design and build the intelligence layer that powers the company’s personalisation, recommendation systems and external APIs, including...SuggestedFull time- A fast-growth startup is hiring a Senior AI Software Engineer to join the founding engineering team at a pivotal moment. You'll be building the infrastructure that powers the next generation of intelligent workforce training, where autonomous AI agents deliver personalized...SeniorImmediate start
$100 per hour
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$144.25k - $256.25k
...+ benefitsJob Function: Engineering & ArchitectureSchedule:... ...design, and enterprise AI platforms on behalf of the companySenior Staff AI Engineer leads enterprise... ...AI platforms, mentors senior technical talent, and drives... ...commitment to back our customers, communities...SeniorVisa sponsorship$120k - $180k
...Founding Full-Stack Engineer We are looking for a founding full-stack engineer to... ...infrastructure that shapes how AI will change the physical... ...values. Yrikka is the leading startup in red teaming of vision models... ...end-to-end: front-end, back-end, system design, debugging...Permanent employmentFull timeWork experience placementWork at office$180k - $220k
FP&A, Senior Manager | Late stage VC backed SaaS | NYC Hybrid, Manhattan based $180k - $220k + stock options Talentedge are proud to be partnering with... ...IPO environment) Strong SQL experience (essential) Keen advocate and adopter of AI tooling #J-18808-Ljbffr TalentedgeSenior$120k - $150k
...we work with teams across the United States to help them hire. Founding AI Engineer Location: New York City, NY (Union Square) Company Stage of Funding: Early-Stage, Venture-Backed AI Startup Office Type: Hybrid (3 Days Per Week) Salary: $120,000-$15...Work at officeRemote work3 days per week- ...systems at the core of a live, AI-native fashion product (self-... ...work alongside them. This is a founding-level role with a path to... ...community. Why Now Lekondo is backed by world-class investors. The... ...one of our first handful of engineers, working shoulder-to-shoulder...Remote workFlexible hoursShift work
$200k - $250k
...New York, United States Permanent Senior AI EngineerLocation: New York, NY (Hybrid)... ...Our client is a fast-growing technology startup building intelligent products powered by... ...scale, they are looking for a Senior AI Engineer to help design and deliver the next...SeniorPermanent employment- ...Founding AI Engineer (AI + Production) New York City (5 days on-site) • Top of market + equity +... ...expertise with frontier AI and move with startup speed. Now we need a Founding AI... ...the regulatory bottleneck that's held back clean energy for decades. The tokens...Immediate startWeekend work
- ...reimagining fashion shopping with AI avatars. To do this we're... ...Apple, DeepMind, Meta, and startups. Backed by the investors behind OpenAI... ...We're looking for an iOS Engineer to craft a category-defining... ...from our office in NYC. As Founding iOS Engineer you will…...Work at office
$160k - $250k
...Our Company Ryvn is a Y Combinator–backed , seed-stage startup based in New York City , where our... ...the discipline of production-grade engineering — solving hard technical problems that... ...to last. About the Role As a Founding Software Engineer at Ryvn, you’ll...Temporary workImmediate start- A forward-thinking tech startup is looking for a Senior Software Engineer, AI, to design and develop core AI technology. In this remote-friendly position, you will collaborate with cross-functional teams and drive initiatives from concept to completion. The ideal candidate...SeniorRemote work
- ...Tetrix is a fast-growing startup on a mission to empower... ...private markets). Our AI-native product... ...financial markets, and is backed by stellar investors that... ...MBAs at Stanford and co-founded Tetrix in the Summer of... ...proprietary AI extraction engine. You'll brainstorm...SeniorSummer workWork at office
$13 per hour
...SalesforceSalesforce is the #1 AI CRM, where humans... ...opportunity in the back office, with... ...Built with intentional startup speed, the team is now... ...a highly experienced Senior, Lead, and Principal Engineers to serve as a key individual... ...benefits can be found at the following link...SeniorFull time- ...As a Senior / Staff Forward Deployed AI Engineer, you’ll sit at the intersection of engineering, AI, and customer success. You will work directly with... ...closely with core engineering and product teams, feeding back customer insights to inform the product roadmap. Stay...SeniorFull time
$200k - $300k
...conversations, and the AI automatically transcribes... ...** Aurora helps top engineers discover opportunities... ...of the most ambitious startups worldwide. We work closely... ...**Company Details** * Founded: 2019 * Team Size: 80 employees... ...cannot handle. **Backed by Top Investors**...Full timeWorldwideVisa sponsorship- ...the hardest problems in enterprise AI: AI models are generic but company... ...operations. We're a Series A startup, backed by Sequoia and other leading VC firms, and we're growing our team... ...We're a deeply technical team of engineers, AI researchers, and strategists with...Full time
- A technology startup in New York is seeking a full-stack developer to build innovative voice AI features. The role involves making significant technical decisions and shipping products quickly in a dynamic startup environment. Ideal candidates are those excited about AI...
- A tech startup based in New York is seeking a Full Stack Software Engineer to join their healthcare team. This role involves shaping product and technical architecture... ...have extensive experience in front-end and back-end development, focusing on usability and effective...Senior
- Raydar, a consumer AI startup, is hiring an AI Engineer to own the conversational intelligence layer end to end. You will transform LLM capabilities into reliable product behavior across agent loops, prompt architecture, tool calling, state, memory, streaming, and error...Senior
$200k - $300k
...Description About the Company A fast-growing, YC-backed seed-stage startup (founded 2024) using generative AI to automate debt collection — a $35B US market.... ...agent infrastructure in-house and needs an AI Agent Engineer to own it end-to-end. You'll build on top of LiveKit...Full timeRelocationVisa sponsorship$200k - $300k
...Description Job Description AI Agent Engineer New York, NY · Hybrid (3... ...is an early-stage, venture-backed startup building AI voice agents... ...with the founders. Founded 2024 · ~8 people · Industry... ...backed company A tight, senior technical team with direct...Full timeH1bVisa sponsorship3 days per week- ...Full-Stack Engineer Opportunities Harmonic is the startup discovery engine. It pains us to see great startup opportunities... ...at a rate of 100%+ annually, backed by $30M from Craft, Floodgate, and... ...-end. You've ideally been a founding engineer, or joined a product early...Senior
$170k - $220k
...client is building the AI operating system for the... ...the rest. It is well-backed by a top fintech-focused... ...and finance leaders. Founded 2023 · 1–10 people (... ...to end — from context engineering and prompt design through... ...agents ~ Early-stage startup experience (pre-seed to...SeniorFull timeWork at office- ...Why Moonshot AI? Imagine websites that... ...funded, very early-stage startup with a massive... ...of a founder with the backing of top-tier investors... ...Achieve As our Senior Fullstack Engineer, you'll be hands-on... ...Work directly with the founding team - your impact is...SeniorWork at officeImmediate start1 day per week
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