Lucas Senna

Summary

Solutions Architect & former Tech Lead with 10+ years designing and building scalable, production-grade fintech and healthcare systems across three continents. Expert in solution design, backend engineering, and cloud-native, event-driven architectures. Specialized in Generative AI and agentic systems — multi-provider LLM orchestration, RAG pipelines, and AI-assisted engineering workflows — applied to accelerate design quality, documentation, and delivery velocity. Fluent in English, Portuguese, and German; effective in multicultural, cross-functional teams.

Professional Experience

Solutions Architect — alt.bank | novücard

• RAG & Knowledge Systems — design and implement Retrieval-Augmented Generation pipelines across multiple fronts: grounding code generation in internal codebases and standards, powering incident monitoring and on-call response with contextual runbook retrieval, and surfacing relevant documentation, policies, and compliance requirements to reduce hallucinations in regulated contexts.
• Agentic Workflows — build autonomous and semi-autonomous AI agents that orchestrate multi-step engineering and operational tasks (code review, incident triage, documentation), integrating tool-use and human-in-the-loop checkpoints.
• Prompt & Context Engineering — design structured prompting strategies, context-window optimization, and evaluation harnesses to maximize the reliability of generative AI across critical financial services.
• LLM Observability — implement monitoring, evaluation, and guardrail layers for GenAI features in production, tracking latency, cost, prompt drift, and output quality across engineering workflows.
• AI Governance & Data Protection — establish governance frameworks for AI-generated solutions to prevent data leakage and unauthorized exposure of sensitive financial information, keeping outputs safe, traceable, and compliant with regulatory standards.

• System Design — architect high-availability, distributed systems for credit decisioning and issuer flows supporting thousands of users.
• Technical Roadmap — drive the architecture strategy for B2B financial products, aligning business goals with scalable system design.
• Trade-off Analysis — lead the evaluation of technology stacks and cloud architectures to optimize performance, security, and operational cost.
• MVPs & POCs — spearhead architectural proofs of concept to validate new product features and technical hypotheses.

• Support pre-sales and onboarding of B2B clients for Credit & Card-as-a-Service offerings.
• Mentor engineering teams, ensuring implementations adhere to architectural guidelines and best practices.

Tech Lead Software Engineer — alt.bank | novücard

• Led credit and platform engineering teams building large-scale credit card and issuer platforms.
• Architected credit decisioning systems, issuer flows, and operational automation.
• Helped position alt.bank as a Credit & Card-as-a-Service B2B provider.
• Improved performance and reliability for applications supporting 90k+ users.
• Applied Generative AI to improve engineering velocity, documentation, and design workflows.

Senior Software Engineer — alt.bank | novücard

• Developed core credit backend services and integrations.
• Migrated issuer systems to a modern card processor with zero downtime.
• Built B2B automation tools reducing operational workload.
• Improved mobile app stability and UX (4.8 store rating).

Software Engineer — Scale Systems | DIVI.hub

• Automated financial workflows, reducing manual work by ~80%.
• Improved reliability and engagement of core platform modules.

Software Engineer — IT4process GmbH

• Built hospital workflow automation platforms used by doctors, nurses, and administrative teams.
• Developed secure medical data processing services compliant with EU healthcare regulations.
• Delivered clinical web and mobile systems for B. Braun and RWTH Aachen University Hospital.
• Implemented high-availability systems with strict security and audit requirements.

Software Developer — Distributed Systems Laboratory (UFCG)

• Integrated Lenovo XClarity with Red Hat CloudForms for hybrid-cloud automation.

Technical Skills

Education