Hybrid Tech Lead, Java, .NET

at GFT Technologies

• Job title: Tech Lead, Java, .NET
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: ASP.NET, Azure, Delphi, Docker, Java, Kafka, Kubernetes, RabbitMQ, SQL, .NET
• Location requirements: Hybrid, Barueri, Brazil

About the role

• Tech Lead guiding backend development teams in Java and .NET at GFT. Ensuring architectural consistency and leading AI integration in projects.

Responsibilities

• Provide technical leadership for the backend development team (Java + .NET), ensuring consistent deliveries aligned with standards and schedules;
• Serve as the technical owner of the Java → .NET migration flow, ensuring functional, contractual and behavioral equivalence;
• Work alongside the AI Architect during Sprint 0 to structure the process for using OpenCode + Copilot;
• Take daily governance of AI usage after Sprint 0, guiding developers, reviewing outputs and adjusting approaches;
• Define and maintain standards for code, architecture, style, testing, security and quality;
• Review and validate code migrated or generated by AI, correcting architectural deviations and business-rule issues;
• Ensure adherence to the client's architecture, including guidelines from the "gold" repository and logging practices;
• Support developers in reading, interpreting and refactoring legacy Java and Delphi code;
• Lead analysis and remediation of equivalence issues between Java and .NET;
• Make swift, well-founded technical decisions to maintain pace, quality and predictability;
• Conduct code reviews, pair programming and backlog refinements with a focus on architectural coherence;
• Work directly with the PO, XP Architect and other teams for clarifications and alignment;
• Anticipate technical risks and propose viable solutions considering environment, deadlines and architecture;
• Escalate special cases to the AI Architect for support when necessary;

Requirements

• Strong experience as a Tech Lead or Senior Backend Engineer in complex microservices projects (Java and .NET);
• Proficiency in Java 17+, .NET 8 / ASP.NET Core, C#, RESTful APIs, messaging and distributed architecture;
• Experience with stack migrations (especially Java ↔ .NET);
• Strong foundation in Clean Architecture, DDD, SOLID, design patterns and engineering best practices;
• Experience with generative AI tools applied to development (Copilot, OpenCode, LLMs);
• Proficiency with Azure (App Services, AKS, APIM, Service Bus), Docker, Kubernetes, CI/CD, monitoring and logging;
• Proficiency in SQL Server, performance tuning, transactions and concurrency;
• Hands-on experience with RabbitMQ, Kafka and synchronous/asynchronous integrations;
• Knowledge of prompt engineering;

Benefits

• Multi-benefits card – you choose how and where to use it.
• Study grants for undergraduate, postgraduate, MBA and language courses.
• Certification incentive programs.
• Flexible working hours.
• Competitive salaries.
• Annual performance review with a structured career plan.
• Opportunities for international career growth.
• Wellhub and TotalPass.
• Private pension (retirement plan).
• Childcare assistance.
• Health insurance.
• Dental insurance.
• Life insurance.