Hybrid Backend Developer – Tech Lead

at TTECH

• Job title: Backend Developer – Tech Lead
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: No Education Requirement
• Tech skills: Azure, Docker, GraphQL, JavaScript, Kubernetes, Node.js, Redis, SQL, TypeScript, .NET
• Location requirements: Hybrid, Barueri, Brasil

About the role

• Full Stack Developer for developing robust applications in data platforms at Telefónica Tech. Leading technical teams and collaborating on Machine Learning and Artificial Intelligence projects.

Responsibilities

• Technical leadership: guide the team (3–10 developers), perform pairing/mentoring, plan the technical roadmap and lead code reviews.
• Architecture & design: define and document scalable architectures (12‑factor, event‑driven), integration patterns and API contracts.
• Bots & channels: design and implement bots using Bot Framework SDK (Node.js/TypeScript or C# .NET), Azure Bot Service and channels (WebChat/Direct Line, Teams, WhatsApp via Twilio/Infobip, RCS, app/web).
• Quality & observability: establish tests (unit/integration/conversational end‑to‑end), telemetry (App Insights/OpenTelemetry), logging and tracing with cost correlation.
• DevEx & CI/CD: standardize pipelines (GitHub Actions/Azure DevOps), versioning, feature flags, canary/blue‑green deployments and safe rollbacks.

Requirements

• 7+ years in Software Engineering; 2+ years as a technical lead or technical reference.
• Proficiency in Node.js/TypeScript or C# .NET.
• Strong experience with Microsoft Bot Framework v4 (SDK, Composer), Azure Bot Service and Bot Framework Emulator.
• Implementation of Adaptive Dialogs, middleware, state management (Conversation/User/Private), OAuthPrompt, proactive messages and conversation references.
• REST/GraphQL APIs, webhooks and messaging (Service Bus/Queues).
• Containers (Docker, Kubernetes/AKS), observability and production troubleshooting.
• Databases (Cosmos DB/SQL), cache (Redis) and queues.
• Engineering practices: TDD/BDD, SOLID, clean architecture and design patterns.

Benefits

• Meal voucher (VR), food allowance (VA), medical insurance, dental insurance and life insurance.
• An exclusive offer from Vivo, with a special discount on landline, broadband, TV and apps.
• Eligible to receive an annual bonus or PPR.
• Plan your future through a private pension plan.
• Have children? You will be entitled to a subsidy to help with school, daycare or nanny expenses.
• Work in an environment that respects your personality, your dress style and the way you are — you can be authentic. #ComeAsYouAre
• Work remotely up to 2 times per week. #Mobility
• Flexible working hours.
• Enjoy a day off to celebrate your birthday.
• Participate in one of the largest corporate volunteer programs to help you make a difference in the world.
• Benefit from our Educational Development Program offering partnerships with educational institutions at discounted rates, plus certifications and online courses.
• Accelerate your career through our Internal Recruitment Program, in Brazil or abroad — we are present in more than 17 countries! #MyCareer
• And much more! But you have to apply to find out...