Senior Ia Software Engineer

November 8, 2026

Hybrid

Senior

Sintra, Portugal

Indeed

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English is required

Description

The employer builds software for the automotive industry, simplifying and digitizing every step of the customer journey for manufacturers and dealerships. It is looking for a Senior Software Engineer who will act as the hands-on advocate of AI within the team, using AI coding agents every day and showing teammates how to get real value from them. The role spans modern applications built with C#/.NET and React alongside long-living systems in COBOL, Delphi, PowerBuilder, FoxPro and WinDev, including modernization and migration work. The position is based in Sintra, Portugal.

Responsibilities

Lead by example in the daily use of AI coding agents (e.g. GitHub Copilot, Cursor, Claude Code) across development, testing, documentation and code review
Configure and maintain agent setups for the team: rules, instructions, prompt libraries, context files and reusable workflows
Share what works: run demos, pair-programming sessions and short internal workshops, and help teammates build confidence with AI tools
Identify repetitive tasks that can be accelerated with agentic approaches and propose practical improvements
Keep an eye on the AI tooling landscape and bring relevant, pragmatic ideas back to the team
Develop, maintain and evolve applications across the full landscape, from C# and .NET to COBOL, Delphi, PowerBuilder, FoxPro and WinDev, including bug fixing, new features and ongoing improvements
Use AI agents throughout the work to write, review and test code, and to analyze, document and explain legacy code, business rules and data flows
Contribute to modernization initiatives, helping plan and execute migrations from legacy systems to modern architectures with correct business logic carryover
Help shape the design and architecture of the modern stack so it is ready to absorb what is being modernized
Build and maintain a shared knowledge base so expertise in both legacy and modern systems is spread across the team
Design, develop and maintain features across backend and frontend applications
Write clean, maintainable code following SOLID principles and good architectural practices
Take part in code reviews, giving and receiving constructive feedback
Work with CI/CD pipelines and cloud environments to build and deploy work
Work closely with product, QA, DevOps and other engineering teams
Support and mentor less experienced engineers, especially in AI-assisted development practices

Requirements

4 to 6 years of professional software development experience
Proven hands-on, day-to-day experience with AI coding agents such as GitHub Copilot, Cursor or Claude Code, including configuration and rule/instruction management
Experience building agentic workflows, MCP servers or custom AI tooling
Genuine openness and willingness to work with legacy technologies (COBOL, Delphi, PowerBuilder, FoxPro, WinDev)
Solid experience with at least one modern stack, ideally C# / .NET and/or React / TypeScript / JavaScript
Experience with relational databases and SQL
Practical experience writing automated tests: unit, integration and/or end to-end
Familiarity with Git, CI/CD pipelines and Agile practices
Previous experience with any of COBOL, Delphi, PowerBuilder, FoxPro or WinDev is a plus
Experience in legacy modernization or migration projects
Experience with cloud environments (Azure, AWS or GCP) and Docker
Experience with testing tools such as Playwright, Cypress or Newman
Fluent in English (mandatory)
French and/or Spanish is a plus
Curiosity and a learning mindset: enjoy figuring out how things work, old or new
Natural ability to share knowledge and bring others along, without being dogmatic
Strong analytical and problem-solving skills
Clear communication and collaboration in cross-functional teams
Ownership: drive initiatives to completion

Conditions

Hybrid work: rotational model, 2 days onsite, three days remote
14 payments per year: 12 monthly payments plus a summer bonus and a Christmas bonus in November
Meal voucher of €10.20 per working day
23 vacation days, plus 24th or 31st December off
Language training: access to group classes in Spanish, English, or French
Private medical insurance with Multicare coverage
Teambuilding: afterworks and team activities