Software Developer - AIO (Typescript)

About Threecolts

Threecolts is a software suite built for consumer brands, helping them recover revenue, operate more efficiently and grow across major retailers and marketplaces.
Our largest business, Margin Pro, helps brands recover money owed to them by retailers and marketplaces such as Amazon, Walmart and Target by managing disputes on their behalf. Alongside this, we’re building and scaling newer products, including AI Operator and Retail 365, while continuing to grow our portfolio of subscription products across our customer base.

Who We Are 

We’re a global team of 340 people across 33 teams, having grown through 24 acquisitions. We operate with a flat structure, giving people real ownership and the ability to move quickly. AI is embedded in how we work across the business, helping us increase speed, improve quality and operate at scale.

We are looking for a Full-Stack TypeScript Developer to build the next generation of AI e-commerce platforms.

What you will be responsible for: 

• Driving technical decision-making, including technology selection, architecture design, and system scalability
• Designing and implementing high-quality features across the backend and frontend stack
• Identifying and addressing performance bottlenecks in critical areas of the product
• Maintaining high engineering standards through code reviews, testing, documentation, and continuous improvement
• Reducing technical debt and improving the maintainability, reliability, and scalability of existing systems
• Establishing and promoting software development best practices across the engineering team
• Troubleshooting, diagnosing, and resolving production issues and bugs.
• Collaborating closely with Product Owners to define priorities, refine requirements, and deliver business value
• Working cross-functionally with Product, Customer Interactions teams to understand user needs and improve the product experience
• Contributing to technical documentation, knowledge sharing, and mentoring where appropriate

What we are looking for:

• 6+ years of professional software development experience, with strong expertise in TypeScript
• Proven experience building and maintaining production-grade web applications
• Strong backend engineering experience, including API design, system architecture, and distributed systems concepts
• Solid understanding of relational databases and advanced SQL
• Strong focus on software quality, testing, security, and maintainability
• Experience designing and building secure, reliable, and scalable software systems
• Passion for writing clean, simple, efficient, and well-documented code
• Ability to quickly understand complex systems, identify areas for improvement, and drive technical initiatives independently
• Self-motivated, proactive, and comfortable working in a fast-paced environment with a high degree of ownership
• Excellent communication skills and professional fluency in English.

Nice to have:

• Professional experience with React and modern frontend development practices
• Experience deploying and operating applications using Docker and Kubernetes
• Experience working in startup or high-growth environments
• Familiarity with cloud-native architectures and infrastructure
• Availability within GMT ±3 hours

⛳️ Compensation, Perks & Benefits

• Salary: £ 110,000 per year ( UK) :  $140,000 per year (EU) 
• Opportunity to join company-wide offsites
• Regular rate reviews and bonus opportunities
• Fully remote/hybrid working