Founding Full-Stack Developer | AI-first Startup

Launchyfi; England; Remote; GBP 60,000 - 90,000; Full time

Job summary

Launchyfi, an AI-first startup, is seeking a Founding Full-Stack Developer to lead the development of an innovative SaaS platform. This role offers the chance to shape the product and company culture actively while working in a dynamic startup environment. The ideal candidate will have extensive experience in full-stack development, cloud services, and a mindset geared towards innovation and ownership.

Benefits

Early-stage equity up to 10.0%

Competitive salary post-funding

Flexible hours

Remote-first culture

Qualifications

• 5+ years of experience building and deploying scalable SaaS applications.
• Excited about owning architecture decisions and building from 0 to 1.
• Strong problem-solving skills with user-centric focus.

Responsibilities

• Design and deliver scalable, secure backend and frontend systems.
• Define and implement infrastructure and deployment strategies.
• Partner with commercial founders to set product priorities.

Skills

Full-Stack Development

Cloud Infrastructure

APIs

Automation

Job description

Founding Full-Stack Developer | AI-first Startup

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Founding Full-Stack Developer | AI-first Startup

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Who We Are

Who We Are

Were two commercial and operational co-founders with a proven track record in growing and scaling companies - including a $43M trade sale. Between us, weve led M&A deals, built high-performing teams, and launched multiple startups. After collaborating closely for the past six months, weve decided to build something much bigger together.

Now, we're assembling a world-class founding team to bring our vision to life.

We're building the next billion-dollar lean startup, and were looking for a forward-thinking technical founding engineer to join us. Youll be the technical brain behind the product, owning architecture and execution while shaping the future of the business from day one.

We're now looking to bolster this great founding team with a forward-thinking technical engineer who shares our enthusiasm and brings equally excellent technical finesse. To put it bluntly: if you build something great, well sell the sh!t out of it, and we'll have fun doing it!

About The Role

Step into the role of Founding Full-Stack Developer and be a core architect of our innovative AI-powered SaaS platform. You'll build, optimize, and scale both the frontend and backend, ensuring a seamless experience for our enterprise customers. This is a unique opportunity to define our product roadmap and push the limits of technology in a high-energy startup environment.

Key Responsibilities

Full-Stack Development & Architecture

• Design and deliver scalable, secure, high-performance backend and frontend systems.
• Build intuitive, responsive user interfaces that feel native and frictionless.
• Architect reusable APIs and modular services to power AI-driven product features.
• Embed automation, agentic tools, and internal co-pilots to reduce repetitive work and accelerate dev speed.
  
  
  

️ Cloud, DevOps & Deployment

• Define and implement infrastructure and deployment strategies that optimize for speed, stability, and cost.
• Champion CI/CD, infrastructure-as-code, and proactive monitoring from the start.
• Lead authentication, security, and access control strategies across the stack.
  
  
  

Integrations & Data Systems

• Design reliable, well-structured databases and caching strategies for real-time performance.
• Build clean integrations with 3rd-party SaaS platforms (e.g. CRM, ATS, analytics).
• Help operationalize AI pipelines with our ML/AI co-founders to support features like RAG, smart retrieval, or personalization.
  
  
  

Collaboration & Technical Leadership

• Partner with the commercial founders to set product priorities and define the technical roadmap.
• Work alongside our AI engineers to integrate LLMs, RAG pipelines, and agentic tools into the user experience.
• Drive a lean engineering culture: automate what can be automated, ship fast, and scale efficiently.
• Lead by example, owning your work, delivering quality, and constantly improving.
  
  
  

Who You Are

• A versatile full-stack engineer with 5+ years of experience building and deploying scalable SaaS applications.
• Equally comfortable building frontends, APIs, systems architecture, or integrations.
• Solid understanding of cloud infrastructure and services.
• Excited by the idea of owning architecture decisions and building something from 0 1.
• A problem-solver passionate about creating seamless, user-centric applications that drive business impact.
• A startup-minded innovator who thrives in high-ownership environments and aligns with our core values.
• You don’t wait to be told what to do, you figure it out, propose a solution, and get to work.
  
  
  

Why Join Us?

• Foundational Impact: Become a critical founding team member with significant technical leadership.
• Cutting-Edge Innovation: Work on groundbreaking AI-powered automation and enterprise-grade SaaS solutions.
• Equity & Upside: Benefit from early-stage equity with immense growth potential and competitive salary post-funding.
• Energetic Culture: Join a vibrant, remote-friendly team that values transparency, accountability, and relentless execution.
  
  
  

Benefits

• Excellent early-stage equity up to 10.0%.
• Competitive salary post-funding, aligned with market and contribution.
• True founding role shape the product, company, and technical culture from day one.
• Work with proven commercial and operational operators our founding team includes experienced founders with a $43M exit, deep GTM expertise, and a track record of scaling companies.
• Be part of something meaningful were building an AI-first SaaS company tackling real, valuable problems with real-world impact.
• Remote-first work culture work from anywhere in the world .
• Timezone alignment must be available to collaborate across UTC±2 (e.g., UK, Europe, Africa).
• Flexible hours async-friendly, outcome-focused team.
• Zero bureaucracy, high trust full autonomy and ownership from the start.
• Ground-floor opportunity your decisions, code, and thinking will shape the product, the stack, and the company.
  
  
  

️ Please note: this is an equity-first founding role until we raise funding. If youre not comfortable with this structure, we totally understandbut this likely wont be the right fit.

Were looking for someone who sees this not just as a job, but as a chance to build something category-defining alongside a team wholl go all-in with you.

How To Apply

Send your resume and portfolio/GitHub link to [e-mail] with the subject line AI Engineer Application [Your Name]. Let's build something extraordinary together!

Seniority level

• Seniority level

  Not Applicable

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Marketing Services

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