Technical Lead, Backend – Azure

This is a fully remote position, open to applicants in Brazil.

📋 Description

• Develop and enhance the HTTP routing service, incorporating shard map lookups, authentication via Azure AD / Entra ID, and directing traffic to the appropriate cell within AKS.

• Guarantee router resilience through the implementation of circuit breakers, retries with exponential backoff, and fallback mechanisms utilizing a local shard map cache.

• Establish and evaluate the use of Azure Key Vault for managing service secrets and credentials.

• Provide REST or gRPC APIs with versioned and documented contracts, ensuring they are covered by contract testing.

• Facilitate event routing through Azure Event Hubs, ensuring consumer groups are isolated by cell and that delivery to each tenant is guaranteed.

• Ensure idempotent message processing and create a strategy for a per-cell dead-letter queue.

• Implement event traceability using correlation IDs that are propagated throughout the system.

• Construct the data access layer with tenant-key-aligned sharding utilizing Azure SQL and Cosmos DB.

• Define and execute schema migrations using Flyway or Liquibase, integrated with the AKS deployment pipeline.

• Guarantee that database operations do not cross cell boundaries.

• Implement a per-cell caching strategy with Azure Cache for Redis.

• Develop Control Plane APIs for tenant registration, shard map management, and re-sharding procedures.

• Maintain static stability during instances when the Control Plane is unavailable.

• Oversee code and design reviews.

• Lead the backend team and collaborate with DevOps and Architecture teams.

• Create Architecture Decision Records (ADRs) and document API and database contracts.

• Provide effort estimates and participate in technical proposal development.

• Define the service deployment model on AKS utilizing ArgoCD.

• Ensure APM instrumentation with Datadog, correlating traces, logs, and metrics.

⛳️ Requirements

• Lead-level professional.

• Proficiency in Java, Go, or Kotlin within high-scale production services, emphasizing resilience.

• Experience serving as a tech lead for backend teams.

• Expertise in Azure SQL and Cosmos DB, including modeling, sharding, and production tuning.

• Familiarity with Azure Event Hubs or Service Bus, focusing on consumer groups, idempotency, and dead-lettering mechanisms.

• Knowledge of Azure Cache for Redis, including caching strategies and per-cell invalidation.

• Experience with Azure Key Vault, including establishing standards for secrets and credential management for the team.

• Proficient in AKS, covering service deployment, health checks, readiness probes, and pod lifecycle management.

• Experience with ArgoCD and GitOps as an application delivery model.

• Familiarity with Datadog for APM, distributed tracing, and correlated production logging.

• Experience with Cell-Based Architecture or production sharded systems is an advantage.

• AZ-204, CKA, or equivalent certifications are a plus.

• Knowledge of AWS equivalents such as Aurora, DynamoDB, MSK, and ElastiCache is advantageous.

• Go experience in developing high-performance, low-latency routing services is favorable.

• Involvement in technical pre-sales or proposal development is a plus.

• Ability to work autonomously and manage your own schedule effectively.

🏝️ Benefits

• Multi-benefit card – choose how and where to utilize it.

• Educational grants for undergraduate, graduate, MBA, and language courses.

• Certification incentive programs.

• Flexible working hours.

• Competitive salaries.

• Annual performance reviews with a structured career development plan.

• Opportunities for international careers.

• Access to Wellhub and TotalPass.

• Private pension plan.

• Childcare assistance.

• Health insurance.

• Dental insurance.

• Life insurance.

• CLT employment contract.