CrawlJobs Logo

Founding Engineer

100000.00 - 150000.00 GBP / Year · Job Posted April 24, 2026
Apply Position
Job Link Share

Job Description

This is a stealth-stage AI company taking on one of the messiest, most complex areas in enterprise tech. The kind most people avoid. They're rebuilding how software interacts with it… from scratch. No playbooks. No shortcuts. Just hard problems.

Job Responsibility

  • Build deep backend systems in Python that power intelligent workflows
  • build infrastructure that keeps systems running reliably
  • tackle scalability
  • design for messy real-world environments
  • work across infrastructure, product, and architecture

Requirements

  • Strong in Python
  • experience with infrastructure or DevOps
  • experience with Kubernetes
  • curiosity
  • ability to pull things apart, improve them, and build from scratch
  • experience with early-stage teams or experimenting with new tools

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Similar Jobs for

Founding Engineer

8 matching positions

Founding Engineer

Founding Engineer — Aqua The Problem The alternative investment industry moves...
Location
Location
United States , New York
Salary
Salary:
100000.00 - 160000.00 USD / Year
helpcare.ai Logo
Helpcare AI
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years
  • Amazon Web Services (AWS)
  • PostgreSQL
  • Python
  • Distributed Systems
  • Software Architecture
  • Microservices
Job Responsibility
Job Responsibility
  • Build LLM-powered pipelines that ingest, classify, extract, and generate complex financial documents
  • Systematically identify high-volume, high-cost operational processes and build systems that eliminate them
  • Migrate toward a modern, agent-friendly architecture while keeping production stable for clients processing millions in transactions
  • Scoping, building, testing, deploying, and operating entire systems end-to-end in production
  • Ship production code in first week
  • Own a critical automation pipeline that has direct, measurable impact on the business
  • Work directly with operations and client service teams to understand manual processes being replaced
  • Make architectural decisions that the rest of the team builds on
  • Fulltime
Read More
Arrow Right

Founding Engineer

Why This Role We're a YC + SoftBank-backed team that has launched a new venture...
Location
Location
United States , San Francisco
Salary
Salary:
Not provided
helpcare.ai Logo
Helpcare AI
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of experience, including 5+ years shipping Node.js and React in production
  • Startup-tested: you've worked at a Seed or Series A company, made hard tradeoffs under pressure, and know what it takes to move fast with limited resources
  • Owned infrastructure end-to-end — CI/CD pipelines in GitHub Actions, Docker deployments to container orchestration, static assets to S3, and AWS services including Lambda, ECS, CloudWatch, and RDS
  • Has shipped agentic or voice AI products in production — you have real scars from debugging non-deterministic, latency-sensitive systems at scale
  • Deeply familiar with LLM failure modes: hallucination, context limits, tool-calling reliability — and knows how to build guardrails that actually hold
  • Fluent in AI tooling across the full development lifecycle, from architecture and planning through to scaling
  • strong prompt engineer who knows how to get reliable output from models
  • Product-minded: you think in user outcomes, not tickets, and you push back when the spec doesn't make sense
  • Highly autonomous — you identify what matters, prioritize ruthlessly, and execute without hand-holding
  • Wired for speed without sacrificing quality: you ship fast and ship things users love, and you know the difference between acceptable debt and the kind that kills momentum
Job Responsibility
Job Responsibility
  • Design and ship agentic AI pipelines — multi-step, tool-using, self-correcting workflows that operate reliably at scale without human intervention
  • Build and iterate on real-time voice AI systems: low-latency speech pipelines, turn-taking logic, interruption handling, and voice-to-action flows
  • Own intelligent matching and discovery systems — the core AI that powers how we connect the right people at the right time
  • Make high-leverage architectural decisions: when to use RAG vs. fine-tuning, how to structure memory across agent sessions, how to instrument and debug non-deterministic systems
  • Be a genuine thought partner to the founders on product strategy — shape the roadmap, not just execute it
  • Set the engineering bar and build the culture as the team scales
  • Fulltime
Read More
Arrow Right

Founding Engineer

We’re working with an early-stage, mission-led business in the financial wellbei...
Location
Location
United Kingdom , Manchester
Salary
Salary:
100000.00 GBP / Year
yourprimerecruitment.com Logo
YourPrime
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong background in software engineering, with experience building production applications
  • Experience developing mobile applications (React Native or similar)
  • Comfortable working across APIs, backend systems, and cloud environments
  • Experience operating in startup, scale-up, or high-ownership environments
  • Already using AI tools to improve development workflows
  • Strong interest in building AI-enabled product features
  • Curious about how LLMs, agents, and data can enhance user experience
  • Product-focused: you care about user outcomes, not just implementation
  • Commercially aware: you understand how engineering decisions impact business outcomes
  • Comfortable with ambiguity and moving quickly
Job Responsibility
Job Responsibility
  • Lead development of the mobile application
  • Translate product vision into high-quality, scalable code
  • Own delivery end-to-end (architecture, build, testing, deployment)
  • Work closely with product and design to deliver a best-in-class user experience
  • Embed AI meaningfully into the product experience
  • Explore use cases across Personalisation, Behavioural insights, User engagement
  • Leverage modern AI tooling to accelerate development and improve output
  • Help define and evolve system architecture
  • Make key decisions across Mobile stack, Backend integrations, Data and AI infrastructure
  • Balance speed vs scalability in an early-stage environment
What we offer
What we offer
  • Founding-level opportunity with real ownership
  • Direct access to founders and strategic decision-making
  • Opportunity to build an AI-native product from the ground up
  • Clear pathway to Head of Engineering
  • Mission-led business tackling financial wellbeing and stress
  • Meaningful long-term upside through equity
  • Fulltime
Read More
Arrow Right

Founding Engineer

We’re working with an early-stage startup looking for a Founding Engineer to bec...
Location
Location
United Kingdom , London
Salary
Salary:
100000.00 - 115000.00 GBP / Year
oho.co.uk Logo
Oho Group Ltd
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 2–3+ years of experience as a software engineer
  • Strong experience with TypeScript full stack development
  • Comfortable working in fast-moving startup environments
  • Product-minded engineer who enjoys building from scratch
  • Someone excited by ownership, autonomy, and impact
Job Responsibility
Job Responsibility
  • Build and ship product features end-to-end using TypeScript across the full stack
  • Design scalable backend systems and modern frontend applications
  • Work directly with the founders on product decisions and roadmap
  • Help establish engineering best practices and technical foundations
  • Play a key role in building the early engineering team
What we offer
What we offer
  • Equity
  • Up to 1.5% equity as a founding team member
  • Opportunity to be the first technical hire
  • High ownership and direct influence on the product and company
  • Fulltime
Read More
Arrow Right

Founding Engineer

Founding Engineer (Full-Stack TypeScript) required at an early-stage AI start-up...
Location
Location
United Kingdom , London
Salary
Salary:
70000.00 - 100000.00 GBP / Year
oho.co.uk Logo
Oho Group Ltd
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Full Stack Developer
  • product focussed Software Engineer with strong full-stack TypeScript experience
  • 2-5 years of professional experience
  • comfortable owning features end-to-end, from concept to production
  • experienced using AI development tools (Cursor, Claude, etc.) in your workflow
  • thrives in early-stage environments with ambiguity and ownership
  • experience building or shipping 0→1 products
  • someone who knows they want to be a founder one day
Job Responsibility
Job Responsibility
  • Be Engineer #1 and have real ownership
  • Shape the technical foundations of the company
  • Work closely with founders in a fast-moving environment
What we offer
What we offer
  • Competitive salary + meaningful equity
  • Fulltime
Read More
Arrow Right

Founding Engineer

Software tool for designing robots and machines. We’re MorphoAI, a venture-backe...
Location
Location
United Kingdom; United States , London; New York; San Francisco
Salary
Salary:
50000.00 - 110000.00 GBP / Year
workatastartup.com Logo
YC Work at a Startup
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 2+ years experience in hands-on software development of highly technical products or a PhD in a CS or robotics-related field (e.g. MechE, ECE, etc.)
  • Past experience in software development, ideally for deployed products, open-source projects, or large codebases
  • Past experience working with control systems, Ideally having broad working knowledge in more than one of the following: Numerical optimization
  • Generative AI development and its underlying core methodology
  • Physical simulation and scientific computing
  • Advanced robotic control methods
  • Geometry processing representations and algorithms
  • Comfortable owning projects end-to-end, from ideation to deployment to maintenance
  • Intense curiosity, a desire to be continuously learning, grit, and an ability to communicate your technical ideas to a team
  • Product-minded with bent towards ideating
Job Responsibility
Job Responsibility
  • Work directly with the CTO and partially with the CEO on critical parts of the product roadmap to develop and deploy new critical new capabilities
  • Build and deploy products for SMB and enterprise customers that will have a huge, tangible impact on customers’ product development
  • Engage with customers to understand how users think about their problems and how we can develop usable products to solve them
What we offer
What we offer
  • 20 days off/ year
  • Medical and dental benefits
  • Health and wellness discount plan
  • 401(k) account
  • Factorio (and other games) gaming buddies
  • Fulltime
Read More
Arrow Right

Founding Engineer

Interface is looking for generalist founding engineers (ml, data, full-stack) wh...
Location
Location
United States , San Francisco
Salary
Salary:
Not provided
Interface
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • make two-way door decisions quickly
  • fix things before being told they’re broken
  • be comfortable with our stack (tsx, py, docker, llms, yolo, tesseract, postgresql, aws, react native ...)
  • have built real things that people use
  • thrive in chaos
Job Responsibility
Job Responsibility
  • speak to users/customers about their experience / problems / needs
  • architect systems used daily by thousands of folks at $B+ companies
  • build agent-swarm data pipelines that autonomously audit thousands of documents
  • maintain infrastructure that scales
  • ship fast – because perfectionism kills progress
What we offer
What we offer
  • Competitive pay, strong equity, and early team influence
  • $3,000 referral bonus for successful hires
  • Fulltime
Read More
Arrow Right

Founding Engineer

Cluely is building AI to give you an unfair advantage in every situation. It act...
Location
Location
United States , San Francisco
Salary
Salary:
250000.00 - 350000.00 USD / Year
Cluely
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • One of the best engineers in the world
  • Strong fullstack engineer (React/Electron/Infra experience)
  • Know how to efficiently fetch and cache data in a React application
  • Know how to design and structure database schemas that optimize read and write performance
  • Comfortable deploying and scaling applications and be able to weigh pros and cons of different infra/devops solutions
  • Down to gamble your life into greatness
What we offer
What we offer
  • Free housing
  • free food
  • guaranteed girlfriend/boyfriend after 1 year
  • equity (0.25% – 0.5%)
  • Fulltime
Read More
Arrow Right