Founding Full Stack Engineer

Permanent
Technology
Experienced
software engineer, fullstack engineer, type script, python, java script
San Francisco, California
California
US$22000 - US$150000 per annum

The Role

As a Founding Full Stack Engineer, you will:

  • Own and deliver entire features and projects end-to-end.
  • Ship optimizations and refactors to improve system performance.
  • Engage directly with customers to understand their needs.
  • Build intuitive and delightful user experiences.
  • Work within real-time, low-latency constraints to develop high-performance applications.

What We're Looking For

The ideal candidate should have:

  • Experience with TypeScript + Next.js or a similar frontend framework.
  • Experience with Python and modern async patterns.
  • Strong communication skills and the ability to clearly articulate technical ideas.
  • A startup mindset-willing to take ownership, iterate quickly, and adapt to uncertainty.
  • A founder's mentality-new ideas come naturally, and you take initiative to bring them to life.

Qualifications

  • Previous experience as a Founding Engineer, Senior Engineer, Staff Engineer, or Principal Engineer.
  • 1+ years of experience working at a company with fewer than 100 employees.
  • Ability to thrive in a fast-moving, in-person startup environment.

Why Join Us?

  • High Impact Role: Shape the future of AI-driven voice agents.
  • Fast Growth: Be part of a team that's rapidly scaling and innovating.
  • Equity & Ownership: Significant equity in an early-stage, high-potential startup.
  • Collaborative Culture: Join a tight-knit team where your ideas and contributions will directly influence the product and company trajectory.

If you're an ambitious full-stack engineer excited about building cutting-edge AI applications, we'd love to hear from you! Apply today to be part of something groundbreaking.

Encouraging Diverse Applications

We encourage applicants from all backgrounds and experiences, including women, non-binary professionals, underrepresented groups in tech, career changers, and those returning to the workforce.

If you're excited about building the next wave of AI development tools and working in a fast-paced, high-impact environment, we'd love to hear from you!

Similar Jobs

£35000 - £40000 per annum
Norfolk
This is a pivotal leadership role responsible for service performance, client satisfaction, operational governance, and continual service improvement. You will act as the primary operational contact for key accounts, ensuring SLA/XLA adherence, managing escalations, and driving consistent, high-quality service delivery.
£30000 - £40000 per annum
Norfolk
I'm proud to be recruiting for a well-established software company at the forefront of retail technology, as they look to welcome a Software Developer to their growing team. This hybrid role requires one day a week onsite and offers the chance to work on a cutting-edge, industry-leading software platform used by major retail clients across the UK and beyond. You'll be a well-rounded developer with 2+ years' commercial experience, confident across both front- and back-end technologies.
10% pension
Suffolk
I'm working with a UK-based infrastructure organisation at the forefront of innovation and sustainability, seeking a Senior Software Developer. This is an exciting opportunity to play a key role in designing, developing, and supporting enterprise-level applications while contributing to a collaborative and forward-thinking technical environment. As a Senior Software Developer, you'll work closely with stakeholders, ensuring solutions are fit for purpose, customer-focused, and aligned to business
£50000 - £65000 per annum
Hertfordshire
A growing, innovation-led biotechnology company based in the Cambridge area is seeking a Senior Software Engineer to support the development of advanced instrumentation platforms used in cutting-edge scientific research. This is a fantastic opportunity to work on complex systems that combine software, hardware, and data analysis to deliver real-world impact in life sciences. You'll play a key role in designing and developing high-quality application and control software across Windows and Linux
£70000 - £80000 per annum
Norfolk
This is a high-impact, cross-functional role focused on improving how work actually gets done. You'll work across teams, systems and processes to reduce friction, improve clarity, and build ways of working that are scalable, reliable and easy to use.
£500 - £525 per day
Remote
Tec Partners are working with a world-leading technology client who are currently looking for an experienced Technical Business Analyst, to work on an exciting customer assignment. As a Technical Business Analyst, you will support on a GCP and cloud security adoption focussed transformation programme.
GCP Cloud Security Engineer / GCP Security Expert Contract, 6 months initially (very likely extensions) Inside IR35 Remote (UK) £550-600 per day
£425 - £475 per day
Suffolk
Advanced experience with C# and .NET (Framework and Core) Frontend development using TypeScript, HTML, CSS, and either React or Vue Proven track record with AWS, ideally including serverless architectures (e.g., Lambda) Experience with CI/CD pipelines and Infrastructure as Code (Terraform or CDK) Strong grounding in clean architecture, SOLID principles, and code maintainability Knowledge of API integration and secure development practices (OWASP)
£500 - £510 per day
London
Tec Partners are working with a world-leading technology client who are currently looking for an experienced Network Engineer, to work on an exciting customer assignment. As a Network Engineer, you will join an internal infrastructure operations function, acting as the support and escalation point for a complex, multi-site campus network estate. You will play a key role in ensuring operational reliability and availability of core infrastructure.
£450 - £550 per day
Devon
We are working with a leading UK organisation to find an experienced Product Manager for a key role within their Platform Technology function. Our client is undergoing a significant technology modernisation programme and needs a skilled product professional to help shape and improve the internal platforms their developers, scientists and service teams depend on every day.
£30000 - £45000 per annum
Essex
We're working with an award-winning Financial SaaS business - one of the UK's biggest facilitators of commercial finance. They're growing their engineering team and are looking for a talented .NET Developer with a frontend lean to help shape the next generation of their products.
€80000 - €120000 per annum
Remote
Building an AI that can directly edit live products, understand design systems, and generate production-ready UI. Not from scratch, not via repo access. Real products, real context. You'll own the agentic intelligence that makes this possible.