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Founding AI Engineer
TechTree's client
Salary
€60k – €110k
Work mode
On-site
What we're looking for
- Experience with implementing Voice AI systems in resource constrained environments
- Strong execution skills
- Desire to build from zero
- Ability to thrive in ambiguous, fast-moving environments
About the role
ABOUT THE ROLE
This is a founding-team engineering role. You'll work directly with the founders to evolve our early stack and help service our first customers — military and emergency services units operating in demanding, resource-constrained environments.
Your initial focus will be on bespoke real-time speech-to-text systems, primarily in Python. The work is highly applied — you'll be building things that get used in the field quickly, under conditions that don't forgive poor engineering. Expect to move fast, make real decisions, and own what you build end-to-end.
WHAT WE LOOK FOR
Voice AI in constrained environments
Experience implementing Voice AI systems where compute, connectivity, or latency constraints are real operational factors — not just benchmarks.
Audio processing and low-latency systems
Comfortable working with audio pipelines and real-time systems. You understand the tradeoffs and can navigate them under pressure.
Strong execution and product mindset
Pragmatic, delivery-focused, and able to build from zero. You don't wait for a perfect spec — you figure it out and ship.
High tolerance for ambiguity
You thrive when requirements are incomplete and timelines are short. Early-stage environments feel like an opportunity, not a risk.
Purpose-driven
You want your work to have real-world impact — helping those who operate in high-stakes environments do their jobs more effectively.
THE TEAM
Small and deliberately assembled. The founding team brings together engineers with deep experience at a leading technology company, a former special forces commander with operational field experience, defence-sector PhDs, and ex-founders. It's a team built for this specific problem — technically rigorous, operationally credible, and moving fast.
COMPENSATION & BENEFITS
Salary
€60,000 – €110,000 depending on experience.
Equity
Meaningful equity as a founding team member.
Relocation
Sponsorship available for candidates relocating.
This is a founding-team engineering role. You'll work directly with the founders to evolve our early stack and help service our first customers — military and emergency services units operating in demanding, resource-constrained environments.
Your initial focus will be on bespoke real-time speech-to-text systems, primarily in Python. The work is highly applied — you'll be building things that get used in the field quickly, under conditions that don't forgive poor engineering. Expect to move fast, make real decisions, and own what you build end-to-end.
WHAT WE LOOK FOR
Voice AI in constrained environments
Experience implementing Voice AI systems where compute, connectivity, or latency constraints are real operational factors — not just benchmarks.
Audio processing and low-latency systems
Comfortable working with audio pipelines and real-time systems. You understand the tradeoffs and can navigate them under pressure.
Strong execution and product mindset
Pragmatic, delivery-focused, and able to build from zero. You don't wait for a perfect spec — you figure it out and ship.
High tolerance for ambiguity
You thrive when requirements are incomplete and timelines are short. Early-stage environments feel like an opportunity, not a risk.
Purpose-driven
You want your work to have real-world impact — helping those who operate in high-stakes environments do their jobs more effectively.
THE TEAM
Small and deliberately assembled. The founding team brings together engineers with deep experience at a leading technology company, a former special forces commander with operational field experience, defence-sector PhDs, and ex-founders. It's a team built for this specific problem — technically rigorous, operationally credible, and moving fast.
COMPENSATION & BENEFITS
Salary
€60,000 – €110,000 depending on experience.
Equity
Meaningful equity as a founding team member.
Relocation
Sponsorship available for candidates relocating.
Equity details
Type: equity
About TechTree's client
This organization is a European defence startup, based between Paris and Warsaw. Our mission is to create modern software tailored for hostile environments. Our customers include European military and police units. We are in stealth but have already been recognised as one of France’s top 20 seed companies. Backed by leading VCs, Europe’s leading defence VC, and strategic partners including the founders of a leading tech company, Quantum Systems, and ElevenLabs. We’re assembling a world-class team at the intersection of modern software and defence. We do not work on weapons systems or hardware products.
Team
- two early employees from a leading tech company
- a former GIGN commander (French special forces)
- ex-employees from a major corporation
- Thales PhDs
- ex-founders