Senior Full Stack Developer - AI

Description

Job Summary: We are seeking a Senior Full Stack Developer to build production applications with AI/LLMs, focusing on RAG and integrations with inference services. Key Highlights: 1. Develop production applications with AI/LLMs 2. Build end-to-end solutions using .NET, Angular, Python, and SQL Server 3. Work with cutting-edge technologies and a team passionate about innovation Job Description We are seeking a Senior Full Stack Developer to build production applications with AI/LLMs, focusing on Retrieval-Augmented Generation (RAG) and integrations with inference services (model serving). You will develop end-to-end solutions using .NET (C\#) for the backend, Angular for the frontend, Python for AI routines and pipelines, and SQL Server and vector databases for persistence and semantic search. The goal is to deliver robust, high-quality, secure products with an excellent user experience. **Responsibilities and Duties** * Develop full-stack AI features: corporate chat, semantic search, assistants, and copilots; * Implement and evolve RAG pipelines: ingestion, chunking, embeddings, indexing, and retrieval; * Integrate applications with LLMs via API/endpoint and/or inference servers/platforms; * Build APIs and services in .NET (C\#) for integration with LLMs, RAG, and internal systems; * Implement UI in Angular (response streaming, history, user feedback, filters, and controls); * Develop Python routines/services for ingestion, embedding generation, and automation; * Work with SQL Server and vector databases (indexing and similarity search with metadata); * Implement error handling, resilience (timeouts/retries), and operational controls; * Ensure security and governance (authentication, authorization, audit trails, privacy/LGPD); * Contribute to engineering best practices (testing, code review, version control, CI/CD); **Requirements and Qualifications** Mandatory Requirements * Solid production experience as a Full Stack Developer; * .NET (C\#) for APIs/services (REST, authentication/authorization, integrations); * Angular (componentization, API consumption, state management, performance); * Python for AI/integration tasks (scripts, lightweight services, API consumption); * SQL Server (data modeling, queries, basic performance tuning); Practical production experience with LLMs: * Consumption via API/endpoint, streaming, context control, and cost management; * Understanding of validation/guardrails (input/output, policies, limits); Real-world RAG (Retrieval-Augmented Generation) experience: * Ingestion, embeddings, indexing, and retrieval (with metadata filtering when required); Experience with vector databases / semantic search: * pgvector, Pinecone, Milvus, Weaviate, or Qdrant (or equivalent); Experience with inference/model serving: * Integration/use of at least one: vLLM, TGI, Ollama, llama.cpp, Triton, or managed endpoint; * Understanding of latency, concurrency, and timeouts; Long-term memory in LLM applications (senior level): * Persistence of history, preferences, and context with retention criteria and privacy considerations; * Storage/retrieval in SQL and/or vector database; Engineering best practices: * Git, testing, code review, CI/CD, and Docker (where applicable); With over 50 years of history, **Banco Daycoval** has built a trajectory based on strong results, business expertise, and excellence in financial services. We are a financial institution specialized in corporate lending, personal loans (payroll-deductible and vehicle financing), foreign exchange products (international trade and remittances), asset management, and investments. Headquartered in São Paulo (capital), the Bank operates hundreds of service points across 21 states and the Federal District. Our national recognition stems from a solid management profile combined with seriousness and consistency in business execution. Daycoval also maintains a branch in the Cayman Islands, serving as a key instrument for resource acquisition and correspondent banking relationships, supporting international operations and business. **Join us in building the future!** Here, you’ll work with cutting-edge technologies and collaborate with a team passionate about innovation. Our technology division leads strategic projects, particularly in artificial intelligence, data, and information security. Our environment is collaborative and inclusive, with a strong sense of belonging. **What you’ll find working with technology at Daycoval?** * A professional and organized work environment; * Focus on system stability, quality, and continuity; * Projects with direct impact on the financial business; * Collaborative work between technology and internal departments; * Technical development opportunities within a solid corporate context. Over the years, this operating model has earned Daycoval notable recognition, including the award for Best Middle Market Bank in Brazil for two consecutive years, as awarded by Austin Rating and the newspaper O Estado de S.Paulo. **Culture and People** We believe outstanding results are achieved by committed people. Therefore, we invest in initiatives that promote well-being, engagement, and social responsibility, such as: * **Musicantes:** free music and singing classes for employees; * **Brincar de Viver:** theater and storytelling with social impact; * **Quality of Life Program:** initiatives focused on health, sports, and culture. **Commitment to Society and Diversity** Beyond a focus on results, we maintain responsible engagement with society, supporting solidarity campaigns and institutions through donations and tax incentives. We value diversity and consider all talents, regardless of ethnicity, religion, color, gender, age, disability, nationality, sexual orientation, gender identity or expression. Here, you’ll find a professional, respectful environment with space to build a consistent career in technology. **Tech Initiatives** **\#DevDay** Every year, our developers gather for a special event where innovation takes center stage. DevDay is an intensive day packed with talks, knowledge sharing, and deep learning about the trends transforming the technology landscape. From artificial intelligence to digital security solutions, our teams dive headfirst into content that inspires and drives new ideas. It’s a moment of connection, growth, and shared energy among those building the future alongside us. More than just an event, DevDay strengthens cross-departmental collaboration, promotes continuous evolution, and inspires new solutions to everyday challenges. **\#Hackathon** At Banco Daycoval, we promote internal initiatives focused on technical development, collaboration, and applied innovation. The Daycoval Hackathon is an event that encourages idea exchange and the creation of technological solutions for real Bank challenges, bringing together professionals from diverse areas in a collaborative, results-oriented environment. **Join us and transform challenges into solutions that impact millions of people!**