Lead Software Engineer, Full Stack

**Join TRG Screen: Building World-Class Teams. One Expert at a Time.** Are you ready to be part of a dynamic team at the forefront of subscription spend management innovation? At TRG Screen, we're not just redefining how organizations manage their subscription expenses – we're shaping the future of the industry. With cutting-edge solutions and a commitment to excellence, we empower businesses around the globe to optimize their subscription investments and drive sustainable growth. Join us in our mission to revolutionize subscription management and make a meaningful impact on the way businesses access and utilize critical information. At TRG Screen, your talent and ambition will find a home, where opportunities for growth and advancement abound. **About TRG Screen** TRG Screen is the leading provider of market data and subscription management technology and automation solutions, tailored to the unique needs of financial institutions and legal firms. Our integrated suite of solutions includes market data and subscription spend management, usage management, compliance reporting, and comprehensive managed services, which hundreds of clients worldwide use to remove cumbersome and inaccurate manual processes and gain control over market data and subscription costs at scale. For more than 25 years, TRG Screen has enabled businesses who rely on market data to monitor and strategically manage spending and usage of data and information services, including market data, research, software licenses, consulting and other necessary corporate expenses. TRG Screen solutions give decisionmakers full transparency into subscription spend and usage, enabling them to proactively manage subscription costs at scale, conduct more informed vendor negotiations, improve governance, and avoid unnecessary spending on these mission-critical business services. TRG Screen is headquartered in New York City, with offices in Europe and Asia, as well as a 24x7 client support center in Bangalore, India. TRG Screen is a portfolio company of Vista Equity Partners, one of the world’s largest and most respected private equity firms. **Position: Software Engineer, Full Stack Location: Belfast Team: Activity Monitor** **The Role** We are seeking a Lead Software Engineer (Full Stack) to provide technical leadership across a TRG Screen product team. This is a hands-on role combining deep engineering expertise with ownership of technical direction, architecture, and delivery — working within a .NET-based full-stack environment that blends new feature development with improving and modernising complex, established systems. TRG Screen is an AI-driven engineering organisation, and this role is expected to champion that culture — setting the standard for how the team builds with AI and leading by example. **Responsibilities** **Technical Leadership** - Lead technical vision and architecture across the team — own decisions on technology stack, design patterns, and system design. - Establish and enforce coding standards, best practices, and development processes. - Champion and role-model AI-assisted development across the team — driving adoption of AI tooling, spec-driven workflows, and responsible use of code-generation practices. **Development & Delivery** - Design, develop, and own complex full-stack initiatives, setting the standard for code quality and craftsmanship. - Conduct rigorous code reviews, providing constructive feedback and ensuring adherence to clean code principles and design patterns. - Champion automated testing practices and ensure system reliability, performance, and security through proactive monitoring and optimisation. - Troubleshoot and resolve the most challenging technical issues, identifying root causes and implementing sustainable fixes. **Team Leadership & Collaboration** - Mentor and provide technical oversight for engineers, supporting their growth through guidance, code reviews, and unblocking. - Build team capability through pairing, training, and documentation standards. - Partner with Product Management to translate requirements into realistic technical solutions and timelines. - Communicate technical decisions clearly to technical and non-technical stakeholders; contribute to sprint planning and continuous improvement. **Required Skills and Qualifications** - 8+ years of professional software development experience, with strong expertise in C# and .NET Core. - 3+ years in a technical leadership or senior engineer role, with a track record of mentoring engineers and owning technical direction. - Strong knowledge of JavaScript and TypeScript, with experience in modern front-end frameworks (React, Angular, or similar) for building data-driven UIs. - Deep understanding of software design principles with proven ability to make and document architectural decisions in large, complex codebases. - Strong database skills with relational databases (SQL Server or PostgreSQL preferred). - Proven track record of implementing comprehensive testing strategies and owning system reliability, performance, and security. - Excellent communication skills and strategic thinking — able to influence technical decisions, work effectively with Product, and balance technical debt against delivery. **Preferred** - Experience with desktop agent or endpoint monitoring software. - Familiarity with CI/CD pipelines and DevOps practices - Hands-on experience with cloud platforms such as AWS or Azure. - Experience with AI-assisted development tools (e.g., Claude Code, Cursor) as part of day-to-day engineering practice — this is how we build at TRG Screen. - Familiarity with spec-driven development — using structured specifications to guide AI coding agents, preserve architectural intent, and validate generated output (e.g. BMAD, GitHub Spec-Kit). Join TRG Screen and unlock your potential in an environment where innovation thrives, opportunities abound, and your contributions make a difference. We are an equal opportunities employer. We recognise and value the power of diversity in our workplace and are committed to being an employer of choice for everyone. We welcome and encourage applicants from all backgrounds. All applications for employment are considered strictly on the basis of merit. At TRG Screen, we understand that diverse and inclusive teams are not just beneficial, they are essential to our success. We recognize that embracing diverse perspectives, backgrounds, and experiences fosters innovation, enhances problem-solving capabilities, and drives better business outcomes. By cultivating a culture of inclusion where every voice is heard and valued, we empower our world class teams to thrive, excel, and drive positive change. We are proud of our diverse workforce and are dedicated to creating a safe and welcoming environment for all employees. People from various ethnicities, ages, genders, and abilities are encouraged to apply. **Privacy Notice for Applicants** TRG Screen is committed to protecting your privacy and handling your personal information responsibly. Information you provide during the recruitment process will be collected, processed, and stored in accordance with our Privacy Policy. We encourage all applicants to review our Privacy Policy to understand how we collect, use, and protect your personal data throughout the recruitment process. Our Privacy Policy is available at: [](http://www.trgscreen.com/privacy-policy). By submitting an application, you acknowledge that you have read and understood our Privacy Policy.