Senior Full Stack Developer

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Grupo IOB

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

🤝 B2B

☁️ SaaS

📚 Education

B2B • SaaS • Education

Grupo IOB is a Brazilian provider of cloud-based software, regulatory content, education and consulting focused on accounting, tax and labor compliance for accounting firms and companies. The group offers SaaS products such as electronic invoicing (NF-e, NFC-e, NFS-e, CT-e, MDF-e), tax simulators, payroll and document management, plus AI-driven intelligence to support decision-making and prepare for the Reforma Tributária. IOB also provides scored continuing-education courses for accountants (CRC credits) and telephone/chat consulting on tax, labor and previdenciary matters.

📋 Description

• Develop high-impact solutions for thousands of Brazilian companies • Work as part of a Full Stack development team • Use C#/.NET, ASP.NET Core, EF Core, PostgreSQL, Redis, TypeScript, React, Next.js and AWS • Develop and integrate AI solutions, including LLMs, AI agents, RAG and function calling/ReAct • Create and consume MCP servers/tools • Implement APIs, clean architecture, automated tests and infrastructure integrations • Collaborate with different areas in a continuous learning, collaborative and innovative environment • Contribute to multi-tenant SaaS solutions, streaming, and LLM observability as a differentiator

🎯 Requirements

• Strong experience with C# / .NET (9+), ASP.NET Core (minimal APIs) and EF Core • Knowledge of Clean Architecture and testing with xUnit • Experience with PostgreSQL, including pgvector, and Redis • Familiarity with LLMs via AWS Bedrock (e.g., Claude/Anthropic) • Knowledge of MCP, including creating and consuming servers/tools • Experience with AI agents, including orchestration, function calling/ReAct and guardrails • Knowledge of RAG, embeddings and vector search • Experience with Kong AI Gateway • Knowledge of TypeScript, React and Next.js • Experience with AWS (ECS, CodeBuild, CloudFront and SES) • Experience with Docker • Experience with Kong / Kong Konnect • Knowledge of Keycloak / OAuth2 / OIDC • Experience with Git (Bitbucket) and Jira • Clear, concise communication • Organized and detail-oriented • Analytical mindset and ownership to solve technical problems • Ability to work well in a team and interact with different departments • Must reside in Brazil

🏖️ Benefits

• Health insurance • Dental insurance • IOB Benefits Card (discount club with exclusive discounts across various shopping platforms) • Childcare assistance • Life insurance • Internet allowance • Profit Sharing (PLR) • Partnerships with educational institutions • Training and development programs • Culture of continuous feedback • 100% remote work