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I am a Lead Mobile Developer and GenAI Engineer with over 12 years of experience building high-performance applications for fintech and B2B organizations. My work combines React Native, mobile architecture, DevOps, and modern AI capabilities, including large language models, multi-agent workflows, RAG systems, and real-time audio generation. I enjoy turning complex technical challenges into reliable, scalable products that create measurable business value. I have led engineering initiatives across AI automation, digital asset services, trading platforms, and enterprise mobile solutions. I am comfortable working across product ownership, architecture, hands-on development, infrastructure, observability, and team leadership, and I enjoy collaborating with cross-functional teams to deliver secure, maintainable software from concept through production.…I am a Lead Mobile Developer and GenAI Engineer with over 12 years of experience building high-performance applications for fintech and B2B organizations. My work combines React Native, mobile architecture, DevOps, and modern AI capabilities, including large language models, multi-agent workflows, RAG systems, and real-time audio generation. I enjoy turning complex technical challenges into reliable, scalable products that create measurable business value. I have led engineering initiatives across AI automation, digital asset services, trading platforms, and enterprise mobile solutions. I am comfortable working across product ownership, architecture, hands-on development, infrastructure, observability, and team leadership, and I enjoy collaborating with cross-functional teams to deliver secure, maintainable software from concept through production.

Samuel Bezerra Gomes

Project Manager, AI Developer, App Developer, +7

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I am a Lead Mobile Developer and GenAI Engineer with over 12 years of experience building high-performance applications for fintech and B2B organizations. My work combines React Native, mobile architecture, DevOps, and modern AI capabilities, including large language models, multi-agent workflows, RAG systems, and real-time audio generation. I enjoy turning complex technical challenges into reliable, scalable products that create measurable business value. I have led engineering initiatives across AI automation, digital asset services, trading platforms, and enterprise mobile solutions. I am comfortable working across product ownership, architecture, hands-on development, infrastructure, observability, and team leadership, and I enjoy collaborating with cross-functional teams to deliver secure, maintainable software from concept through production.…I am a Lead Mobile Developer and GenAI Engineer with over 12 years of experience building high-performance applications for fintech and B2B organizations. My work combines React Native, mobile architecture, DevOps, and modern AI capabilities, including large language models, multi-agent workflows, RAG systems, and real-time audio generation. I enjoy turning complex technical challenges into reliable, scalable products that create measurable business value. I have led engineering initiatives across AI automation, digital asset services, trading platforms, and enterprise mobile solutions. I am comfortable working across product ownership, architecture, hands-on development, infrastructure, observability, and team leadership, and I enjoy collaborating with cross-functional teams to deliver secure, maintainable software from concept through production.

Available to hire

I am a Lead Mobile Developer and GenAI Engineer with over 12 years of experience building high-performance applications for fintech and B2B organizations. My work combines React Native, mobile architecture, DevOps, and modern AI capabilities, including large language models, multi-agent workflows, RAG systems, and real-time audio generation. I enjoy turning complex technical challenges into reliable, scalable products that create measurable business value.

I have led engineering initiatives across AI automation, digital asset services, trading platforms, and enterprise mobile solutions. I am comfortable working across product ownership, architecture, hands-on development, infrastructure, observability, and team leadership, and I enjoy collaborating with cross-functional teams to deliver secure, maintainable software from concept through production.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

French

Fluent

Portuguese

Fluent

Spanish; Castilian

Advanced

Estonian

Beginner

Work Experience

Lead GenAI & Full Stack Engineer at Spreadout.ai

January 1, 2025 - Present

Architected an autonomous marketing agent that increased user-generated content contribution by 45%. Evaluated and integrated LangChain, LangGraph, LlamaIndex, and Haystack for multi-agent reasoning and decision-making pipelines. Engineered scalable RAG architecture for proprietary data, containerized AI microservices, and implemented LLM observability with LangSmith and LangFuse. Optimized multimodal AI models for on-premise execution and expanded AI capabilities across multiple specialized platforms.

Freelance Full-Stack Developer at Spread Out AI

January 1, 2025 - Present

Freelance web and mobile app developer building apps with NextJS, React Native, TypeScript, Expo, Node.js, and SQLite; deployed on Fly.io; CI/CD pipelines with GitLab; integrated OpenAI APIs and open-source LLMs for content generation, optimization, and group matching; built backend to scale across platforms (Facebook, WhatsApp, Telegram) in real-time; led sprint planning, retrospectives, and backlog prioritization with a cross-functional team of 10+; implemented automated testing, performance monitoring, and secure authentication flows; fostered engineering culture and knowledge sharing.

Product Owner & Lead Mobile Developer at Paymium & Blockchain.io

January 1, 2024 - October 4, 2025

Led product ownership and mobile development for fintech/crypto platforms; developed and maintained 6+ mobile apps (iOS & Android); migrated native mobile developers to Xamarin; led developer training and evangelism for teams of 8+; implemented automated UI testing via Appium; focused on code quality, maintainability, and cross‑platform performance; delivered end-to-end mobile solutions; worked in a Scrum-based Agile setup with bi-weekly sprints, backlog grooming, and QA collaboration; won a Microsoft prize for the Allo Tutor hackathon project.

Lead Engineer at Tech Solutions Ltd.

January 1, 2020 - Present

Led a team of engineers to develop and implement innovative systems that improved operational efficiency by 30%. Collaborated with cross-functional teams to ensure seamless integration of solutions.

Product Owner & Lead Mobile Developer at Paymium & Blockchain.io

December 31, 2017 - October 4, 2025

Led mobile development for CAC 40 clients including BNP Paribas' social media app, EDF mobile app, and Paris Airport business area iPad app; migrated native mobile developers to the Xamarin stack, leading developer training and evangelism for teams of 8+, improving onboarding and code consistency. Worked in a Scrum-based Agile setup with bi-weekly sprints, backlog grooming, and review sessions, collaborating with PMs and QA. Implemented automated UI testing via Appium and optimized for code quality, maintainability, and cross-platform performance.

Product Owner & Lead Mobile Developer at Paymium

January 1, 2017 - January 1, 2024

Led mobile development for a European Bitcoin exchange and registered Digital Asset Service Provider serving more than 500,000 users. Managed the transition from Xamarin to React Native and delivered reusable mobile architecture using component-driven development, React Query, Zustand, Suspense, caching, localization, OTA updates, and secure local storage. Built CI/CD pipelines with GitLab CI and Fastlane, introduced deep linking and end-to-end testing, managed a 10-person team, and built Kubernetes and Docker infrastructure compliant with financial security requirements.

Product Owner at Innovative Tech Corp.

January 1, 2017 - December 31, 2019

Oversaw product development cycles, managed stakeholder expectations, and ensured alignment with business objectives, resulting in a 25% increase in customer satisfaction.

Developer & Xamarin Evangelist at Business & Decision

January 1, 2017 - October 4, 2025

Developed and maintained 6 mobile apps (iOS & Android) for CAC 40 clients including BNP Paribas employees' social media app, EDF agent operations mobile app, and Paris Airport iPad app. Migrated native mobile developers to the Xamarin stack; led developer training and evangelism for teams of 8+; improved onboarding and code consistency. Worked in a Scrum-based Agile setup with bi-weekly sprints, backlog grooming, and review sessions; implemented automated UI testing via Appium; optimized performance and maintainability. Focused on cross-platform solutions and delivering high‑quality apps.

Mobile Architect at Business & Decisions

January 1, 2014 - January 1, 2017

Deployed mission-critical mobile solutions for enterprise clients including BNP Paribas, EDF, and Paris Aéroport. Led the transition from native to Xamarin development, trained teams of more than eight developers, and created reusable deployment templates and coding standards. Architected an automated Appium testing framework, served as the technical point of contact for stakeholders, and collaborated with project managers in a Scrum environment.