Staff Full-Stack Developer

About us

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. 

Why join us? 

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:

• Expert-level Full-Stack Development: Strong experience with C#, ASP.NET Core, TypeScript, and Vue.js (or equivalent experience with React/Angular). You’re comfortable with component-based architecture, modern JavaScript, and building scalable, maintainable solutions.

• Deep Architectural Knowledge: Proven experience in full-stack development with a focus on designing and implementing complex systems. You’re fami