[Hiring] Senior Software Engineer @Threecolts

Role Description

You’ll take ownership of features across Inventory Lab’s C# and Java-based systems, delivering them from initial design through to production. You’ll design and build clean, scalable services, APIs, and components that are maintainable, well-tested, and performant.

• Operate independently within a defined scope, making sound technical decisions and balancing speed with long-term quality.
• Play an active role in improving the systems you work on, debugging production issues, identifying root causes, and implementing durable fixes.
• Contribute to technical discussions, help evolve architecture within your domain, and raise the bar through thoughtful code reviews.
• Collaborate closely with Product, QA, and DevOps to build features and improvements that deliver meaningful value to Inventory Lab customers.

Qualifications

• 5–8+ years of professional software engineering experience
• Strong proficiency in C# and Java
• Experience building and maintaining backend services, APIs, and scalable application components
• Solid understanding of REST APIs, system design, and scalable application patterns
• Experience working with SQL databases and data modelling
• Familiarity with cloud infrastructure, ideally AWS
• Experience debugging production systems and resolving issues independently
• Comfortable working with Git, code reviews, and team-based development
• Ability to work across an existing codebase and improve quality without over-engineering

Requirements

• Strong ownership mindset and consistently deliver high-quality work
• Make pragmatic technical decisions, understanding when to prioritise speed and when to invest in scalability, reliability, and maintainability
• Comfortable working in a product-led environment and care about the customer impact of what you build
• Communicate clearly, work well with cross-functional teams, and look for ways to improve both the product and how the team operates

Benefits

• Salary: $140,000 per year
• Opportunity to join company-wide offsites
• Regular rate reviews and bonus opportunities
• Fully remote working
• This position will be hired on a contractor / self-employed basis