Staff Full-Stack Developer

Jigsaw Group; United Kingdom; Remote; GBP 50,000 - 90,000; Full time

Job summary

Join a dynamic and innovative team as a Staff Full-Stack Developer at a forward-thinking company. This role offers the chance to work with cutting-edge technologies and be directly involved in shaping critical features and system architectures. You'll thrive in an agile environment, driving technical excellence while collaborating closely with senior leadership. With a focus on clean code and impactful results, your contributions will significantly influence the company's success. If you're a self-starter who enjoys autonomy and is passionate about continuous improvement, this opportunity is perfect for you.

Benefits

Continuous learning opportunities

Autonomy and flexibility

Collaborative team environment

Impact on product direction

Qualifications

• Proven experience in full-stack development with complex systems design.
• Strong focus on clean, maintainable, and performant code.

Responsibilities

• Drive development using C#, ASP.NET Core, TypeScript, and Vue.js.
• Collaborate with senior leadership on high-impact projects.

Skills

Full-Stack Development

C#

ASP.NET Core

TypeScript

Vue.js

API Development

SQL Server

Clean Code Practices

Unit Testing

Agile Methodologies

Tools

Azure

Docker

Azure DevOps

Git

Job description

At Jigsaw, we’re on a mission to transform the way professional services and financial institutions work. We do this by helping our clients organise, visualise and use their data (think Figma or Canvas but for the ‘City’). Our clients include the world’s biggest consultancies, leading financial institutions and top law firms.

Jigsaw was founded by two seasoned entrepreneurs, Stephen and Travis. This is their second venture together; their first was acquired by a US private equity firm and went on to become a billion-dollar company and a household name in professional service firms across the world. Jigsaw is now on a growth trajectory few Series A companies achieve - putting us in the top quartile SaaS companies globally. Today we proudly serve thousands of users from nearly two hundred businesses worldwide, who love our products and use them everyday.

But we’re only getting started! We have ambitious goals and we’re looking for talented people to help us achieve them.

We're not about the corporate grind; instead, we thrive on creativity, enthusiasm, and a touch of humour to make magic happen.

We hire people with high ownership and a bias for action. Then we trust and empower them to do their best work.

Role Overview:

We are looking for a Staff Full-Stack Developer with a high level of technical expertise to join our empowered and trusted team. You’ll be working with cutting-edge technologies and driving innovation through deep architectural and development work. Our team values autonomy, flexibility, and a high bar for excellence—so we need someone who is excited about taking on challenges and pushing their technical limits.

This role is for a hands-on, high-impact Staff Full-Stack Developer who thrives in an intense, agile, and flexible environment. You will be directly involved in shaping and delivering critical features and system architectures, collaborating closely with senior leadership like the CTO and CEO. There is no people management involved, just technical excellence and a relentless drive to deliver business-impacting solutions. You will work across a range of technologies, adapt to changing requirements, and contribute to the evolution of our entire tech stack while maintaining a high standard of code quality.

What You'll Do:

Technical Leadership: Drive development using C#, ASP.NET Core, TypeScript, Vue.js, and other technologies. Own architectural decisions, contribute to product innovation, and ensure the highest levels of code quality through best practices and thorough reviews.

High-Impact Projects: Work directly with the CTO and CEO on company-wide, high-profile projects that have immediate business impact. Dive deep into emergency-like situations where your technical expertise is crucial for fast decision-making and delivery.

Full-Stack Development: Be a key player in building both front-end and back-end systems with expertise in full-stack development, including advanced data visualization tools, AI-enhanced user experiences, and high-performance web applications.

Adapt and Innovate: Stay ahead of the curve by continuously learning new technologies and frameworks. Develop cutting-edge features while embracing flexibility in approach, tools, and languages.

Collaborate and Mentor: Work in a low-hierarchy, highly autonomous environment with full trust from leadership. Collaborate with cross-functional teams, act as a role model for junior developers, and help drive the technical direction of the company.

Agile Execution: Jump into situations where business urgency drives fast-paced development and decision-making. Focus on flexibility, adaptability, and solving problems quickly and efficiently.

Impactful Results: Your work will have a measurable impact on the company's success, contributing to the growth of our tech stack and delivering solutions that improve our customers' workflows and satisfaction.

What We're Looking For:

Deep Architectural Knowledge: Proven experience in full-stack development with a focus on designing and implementing complex systems. You’re familiar with front-end frameworks, back-end architectures, API development, and SQL Server.

High Code Quality: You have a relentless focus on clean, maintainable, and performant code. You ensure that your solutions are scalable and secure and have a strong understanding of unit testing, automation, and code reviews.

Adaptability: You do not need perfect requirements at the outset to get going, high-intensity environment where requirements can change rapidly. You love the challenge of learning new tools and technologies and adapting your approach to meet evolving business needs.

Collaboration & Independence: While you're part of a close-knit team, you're trusted to work autonomously, take initiative, and make decisions that directly influence product direction.

Continuous Improvement: You’re passionate about staying on top of the latest trends in software development, including AI tools, and you’re always looking for ways to improve your craft and drive technical innovation.

You’ll Thrive in This Role if:

You are excited about being in the trenches, solving tough, business-critical problems and shipping high-quality code with speed and precision.

You love the idea of directly influencing the company’s tech direction and collaborating with senior leadership on high-profile initiatives.

You are a true self-starter who enjoys autonomy, thrives in a low-hierarchy environment, and is energized by working with high trust and independence.

You enjoy solving complex problems, innovating under pressure, and delivering solutions that drive business impact.

You are committed to high standards, continuous learning, and pushing your technical boundaries.

It Would Be a Plus If:

You have experience with data visualization technologies or interactive diagramming.

You are familiar with Azure cloud services and Docker containerization.

You have experience working with .NET and ASP.NET Core at an enterprise level.

You have worked with Azure DevOps and Git in production environments.

You’ve contributed to large-scale enterprise application development.

What You’ll Get:

An opportunity to have a direct impact on a product that’s rapidly evolving into the Figma for business and city professionals.

The chance to work with cutting-edge technologies and make decisions that shape the future of our platform.

A team that values autonomy, collaboration, and a high standard of technical excellence.

Continuous learning opportunities in an environment where innovation is encouraged.

Apply now and be part of a team that’s shaping the future of Jigsaw, delivering innovative solutions that make a meaningful difference for our users.