Senior Software Engineer (AI-Native Development) in London

At Benivo, we believe the next generation of strong software engineers will combine deep engineering judgment with the ability to orchestrate AI agents to design, implement, test, and ship software faster. We are hiring a Senior Software Engineer (AI-Native Development) to help us build software significantly faster and better using tools such as Codex, Claude, GitHub Copilot, and similar tools. This is not an AI/ML or research role. It is a hands-on software engineering role for someone who can use AI effectively across the full development lifecycle while remaining fully responsible for quality, design, maintainability, security, and production outcomes.

What you will do:

• Build new product capabilities from requirements through release
• Work confidently inside a large, evolving codebase with technical debt and business-critical logic
• Set up and use multiple AI agents or agentic workflows to accelerate requirements analysis, implementation, testing, refactoring, unit testing, and documentation
• Review and strengthen AI-generated output rather than relying on it blindly
• Write maintainable, production-grade code and automated tests
• Make sound technical decisions across architecture, performance, security, and maintainability
• Help raise the bar for AI-native engineering practices across the organisation

What we value:

• Strong engineering fundamentals
• Ability to produce significantly more engineering output by orchestrating AI tools effectively, not simply writing code faster manually
• High ownership
• Fast execution with quality
• Sound judgment
• Comfort operating in real production complexity
• Business-result orientation

Requirements:

• Experience building and shipping production software
• Demonstrated ability to design effective prompts, agent workflows, and AI-assisted development processes using tools such as Codex, Claude, Copilot, Cursor, or similar systems
• Experience structuring sophisticated engineering tasks so that AI agents can execute them effectively
• Ability to evaluate, debug, and refine AI-generated outputs through prompt iteration and workflow design
• Experience in both creating new systems and improving established ones
• Strong understanding of APIs, databases, testing, debugging, and system design
• Experience setting up and operating multiple AI agents or agentic workflows across requirements analysis, code generation, refactoring, code review, testing, refactoring, unit testing, and documentation
• Strong ability to evaluate code quality, correctness, and security
• Ability to work independently and take responsibility for outcomes

Preferred background:

• Experience with C# / .NET, React, APIs, and automated testing
• Experience in SaaS product companies
• Experience with CI/CD and modern development workflows
• Experience with legacy code modernisation
• Experience in improving engineering productivity across a team

About Benivo:

Benivo is a leading SaaS company in the Global Mobility space. We value small, smart teams, practical problem solving, and engineers who can combine speed, judgment, and ownership. We are not looking for engineers who simply “use AI.” We are looking for engineers who can use AI well to produce better software and better outcomes.

Benefits:

• Hybrid working: one to two days per week in the office (King’s Cross)
• 33 days paid annual leave, including bank holidays which are flexible - you may choose to work on bank holidays and take the day off elsewhere in the year.
• Flexible start-end times (core hours are 10am - 4pm)
• Learning & development - every Friday afternoon is a half day to focus on your self-development and interests
• A yearly generous wellbeing cash-allowance
• PayLater cash advance - financial assistance for large personal expenses (e.g moving house, furniture, etc)
• Work remotely from 30+ countries for one month per calendar year.
• Share options in the employee’s options plan
• Company social events and team celebrations

Benivo is an equal-opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We encourage individuals from all backgrounds to apply and are eager to create a workforce that reflects the diversity of our community.