Senior Full-Stack Software Engineer

Grantify UK; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A technology funding platform in the UK is seeking a Senior Full-Stack Engineer to join their innovative team. You’ll lead the development of scalable solutions, working on both front-end and back-end technologies. The ideal candidate will have over 5 years of experience in full-stack development, with a strong focus on building intuitive user experiences and cloud integrations. This role offers a competitive salary and a flexible, remote-friendly culture.

Benefits

Competitive Salary

25 days annual leave + bank holidays

Private medical insurance

WFH setup budget

Enhanced parental leave

Remote-friendly culture

Qualifications

• 5+ years’ experience as a Software Engineer with strong full-stack skills.
• Proficiency in CSS frameworks (Tailwind CSS, styled-components).
• Experience with modern build tools (Vite, Webpack).

Responsibilities

• Build, test, and deploy full-stack features for the funding platform.
• Design and maintain APIs and integrations.
• Collaborate with Product and Design for impactful solutions.

Skills

Proficiency in TypeScript

Strong full-stack skills

Experience with modern frameworks (React 18+, Next.js)

Hands-on back-end development experience (TypeScript, Python)

Collaboration skills

Database design and optimisation

Tools

React

Node.js

AWS

Docker

CI/CD pipelines

Job description

About Grantify

At Grantify, we’re transforming how businesses secure government funding. From our humble beginnings as a 2-person team, we’ve grown into a thriving 60+ strong organisation with operations across the UK and US empowering start-ups to access millions in non-dilutive funding through our AI-enabled platform.

Having already helped clients secure over $200M in funding, we’re now entering our next phase of product innovation, building scalable tools that make the funding process faster, smarter, and more intuitive.

The Role

We’re looking for Senior Full-Stack Engineers to join our growing Engineering & Product team.

You’ll play a key role in shaping the next generation of Grantify’s products, developing full-stack solutions. From designing beautiful, performant interfaces to building scalable APIs and cloud integrations, you’ll work end-to-end on projects that directly impact how founders access funding.

If you’re passionate about clean, well-structured code and love seeing your work go live fast in a lean, collaborative team - this is the place for you.

Why You’ll Love Working Here

Build from Scratch – Work on greenfield projects and new product features from the ground up, not endless refactors.

Impact & Autonomy – Join a small, nimble team where your ideas directly shape what ships.

Collaborative Culture – Work cross-functionally with Product teams that value experimentation and shared learning.

Startup Energy, Real Growth – Move fast, avoid bureaucracy, and make visible impact in a high-growth business.

End-to-End Ownership – Take responsibility for the full lifecycle, from concept to deployment and beyond.

Innovation Friendly – While ML experience isn’t required, there’s room to explore how AI can enhance our platform if that excites you.

Your First 12 Months

• Build, test, and deploy full-stack features that power our funding platform and customer experience.

• Lead development of new front-end components in TypeScript, ensuring performance, scalability, and strong UX.

• Design and maintain APIs and integrations that connect our platform to internal tools and external services.

• Contribute to cloud architecture and CI/CD improvements (AWS preferred).

• Collaborate with Product and Design to define and deliver impactful solutions end-to-end.

• Support redundancy across the team by sharing knowledge and reducing single-point dependencies.

Tech Stack

Our current stack includes (and we’re open to evolution):

• Front-End: React with TypeScript

• Back-End: Node.js with TypeScript, Python, FastAPI

• Cloud: AWS (preferred), experience with Azure or GCP also valued

• Other Tools: RESTful APIs, CI/CD pipelines, Docker, GitHub, modern testing frameworks, AWS CDK, ETL orchestration

About You

You’re a versatile engineer who thrives in start-up environments - someone who wants to build, not just maintain.

You bring curiosity, accountability, and a product mindset to your craft.

Must-Haves

• 5+ years’ experience as a Software Engineer with strong full-stack skills and front-end bias

• Proficiency in TypeScript and modern front-end frameworks (React 18+, Next.js, etc.)

• Experience with modern build tools (Vite, Webpack, or similar)

• Proficiency in CSS frameworks (Tailwind CSS, styled-components, or similar)

• State management experience (React Query, Redux, or similar)

• Hands-on experience with back-end development (TypeScript and Python)

• Database design and optimisation experience (PostgreSQL, MySQL, or similar)

• API design and development experience (REST, tRPC, or similar)

• Strong knowledge of cloud platforms (AWS, Azure, or GCP)

• UI/UX collaboration with Figma or similar design tools

• Proven ability to build and ship end-to-end features in small, high-impact teams

• Excellent communication and collaboration skills

Nice-to-Haves

• Experience with AI tools for design (Figma AI, UXPilot, or similar)

• Experience with AI coding tools (Cursor, GitHub Copilot, or similar)

• AI/ML integration experience (OpenAI API or similar)

• Infrastructure as Code (CDK, Terraform, or CloudFormation)

• Data pipeline development (ETL, web scraping, data processing)

• Experience in start-ups or B2B environments

Perks & Benefits

💸 Competitive Salary – Transparent, fair pay aligned with experience

🌞 25 days annual leave + bank holidays

🩺 Private medical insurance

💻 WFH setup budget

🤱 Enhanced parental leave

🌍 Remote-friendly culture with UK-based flexibility

The Hiring Process

1️⃣ Screening interview (45 mins) with our Talent Team

2️⃣ Technical coding test

3️⃣ Case Study/System Design Interview with Engineering Team

4️⃣ Final conversation with our CTO