OutSystems Senior Developer

Salary: £55,000 - 65,000 per year

Requirements

• 3–5 years of professional software development experience, with significant exposure to OutSystems and low-code platforms
• Strong understanding of system and application architecture design principles
• Experience with RESTful APIs, SFTP protocols, and other modern integration methods
• Experience with Microsoft SQL Server, including writing and optimizing complex queries
• Understanding of infrastructure and deployment processes, including versioning, environments, and change control
• Proven experience developing secure, scalable, and performance-optimized components
• Familiarity with Agile methodologies, user story estimation, and iterative delivery practices
• Ability to lead code reviews, explain architectural decisions, and defend technical implementations
• Strong written and verbal communication skills
• OutSystems experience: 2 years required
• Experience with CI/CD pipelines and DevOps practices is desirable
• Knowledge of Microsoft Power Platform, SharePoint, or other Microsoft business tools is desirable
• Experience with data migration, refactoring legacy applications, and system modernization efforts is desirable
• Familiarity with monitoring/logging tools and system performance tuning is desirable
• Capacity for multi-sprint problem solving and forward-thinking system design is desirable

Responsibilities

• Design, develop, and maintain robust applications using OutSystems
• Work with advanced Client & Server Actions, Screens, and Aggregates
• Write and optimize complex SQL queries and stored procedures within Microsoft SQL Server
• Build secure, reusable, and performance-optimized components
• Independently deliver medium to high complexity features and epics with minimal oversight
• Build and manage system integrations using REST APIs, SFTP, and Integration Studio
• Participate in and lead peer code reviews, providing technical feedback and mentorship to junior and intermediate developers
• Contribute to architecture and infrastructure improvements aligned with roadmap and enterprise standards
• Deploy solutions within our company infrastructure following DevOps and change management procedures
• Troubleshoot and resolve live production issues and lead root cause analysis for long-term solutions
• Collaborate closely with Project Managers and Tech Leadership

Technologies

• CI/CD
• DevOps
• Microsoft Power Platform
• OutSystems
• REST
• SQL
• SharePoint
• Web
• Matrix

More

We are a significant customer of the OutSystems platform and have been re-platforming our core external web-facing products over the last few years. We are growing our development team due to the volume of work underway. We operate two core products: a recruitment platform supporting several large UK employers, and an employee and volunteer screening service covering right to work in the UK, DBS checks, and more. We work in a hybrid model with the ability to work remotely and from our office in Milton Keynes, and we offer a salary of up to £65,000 per annum plus benefits including pension, 25 days annual leave plus Bank Holidays, birthday day off, volunteer days, health benefits, retail discounts, an EV salary sacrifice scheme, cycle to work scheme, and more. We are committed to building an inclusive and equitable working environment for all staff.

last updated 25 week of 2026