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chabelbossa/README.md

Chabel Bossa - Backend and Full-Stack Software Engineer with AI systems, automation, and mathematical modeling

PortfolioEmailLinkedInRemote InternationalProfile views


The Short Version

I am Chabel Holdo Bossa, a remote-first Backend & Full-Stack Software Engineer from Benin building production-grade software across web, mobile, desktop, SaaS platforms, automation systems, and AI-powered workflows.

My strongest base is software engineering: TypeScript, NestJS, Spring Boot, React, React Native, PostgreSQL, APIs, product architecture, and real-world delivery.

My AI systems work focuses on connecting backend systems with LLMs, automation, transcription, data workflows, retrieval, evaluation, and applied mathematical reasoning.

I do not just write screens and endpoints. I connect product thinking, clean architecture, data modeling, user experience, and delivery discipline until the system works in the real world.

Give me a messy product problem. I will turn it into flows, APIs, interfaces, data models, automations, and systems people can trust.

Core technology stack


Why People Should Pay Attention

Engineering baseBackend and full-stack software engineering with real product delivery across SaaS, dashboards, mobile apps, desktop tools, APIs, payments, and automation.
Backend signalNestJS, Spring Boot, REST APIs, PostgreSQL, authentication, integrations, business workflows, data modeling, and reliable service architecture.
AI systems signalApplied AI, LLM integrations, AI-powered workflows, automation systems, transcription, retrieval, evaluation, and AI backend architecture.
Mathematical edgeMathematical engineering and modeling background, with algorithmic thinking, optimization, operations research, statistics, and stochastic modeling.
Proof of executionSmart Cities Hackathon FRIARE, Cotonou: 3rd Prize, April 2025, with RoadControl, an urban traffic analysis solution.

What I Can Own End-to-End

AreaWhat I shipTools I use
Product FrontendsSaaS dashboards, admin panels, onboarding flows, responsive product UIs, PWAsReact, Next.js, Angular, TypeScript, Tailwind CSS
Backends & APIsREST APIs, auth, business logic, payment workflows, messaging systems, integrationsNode.js, NestJS, Express.js, Fastify, Java, Spring Boot, Spring Security
Data & PersistenceRelational schemas, document models, local storage, offline-ready flowsPostgreSQL, MongoDB, MySQL, SQLite, JPA/Hibernate
Mobile & DesktopCross-platform mobile apps, desktop ERPs, offline-first experiencesReact Native, Expo, Electron.js, Kotlin, Swift
AI & AutomationAI-powered workflows, transcription systems, assistants, structured outputs, automation toolsOpenAI, Gemini, Whisper, Python, TypeScript, APIs
Math & ModelingAlgorithmic thinking, optimization-oriented reasoning, statistical intuition, modeling for applied problemsPython, mathematics, operations research, statistics, stochastic modeling
Delivery & ToolingGit workflows, containers, CI/CD, Firebase/Supabase integrations, deployment pipelinesGit, GitHub, Docker, CI/CD, Firebase, Supabase

AI, Data & Mathematical Engineering

I work at the intersection of backend engineering, applied AI, data systems, and mathematical modeling.

I do not use AI as a buzzword. I focus on the engineering work required to make AI useful inside real products: reliable APIs, structured data flows, model integrations, automation, evaluation, monitoring, and business workflows.

AreaWhat I deliverTools / methods
AI IntegrationsConnecting AI models to real applications, assistants, transcription workflows, dashboards, and internal toolsOpenAI, Gemini, Whisper, Python, TypeScript, APIs
LLM ApplicationsStructured outputs, business assistants, retrieval workflows, automation, and human-in-the-loop systemsLLM APIs, prompt design, tool calling, JSON schemas, backend orchestration
Data & ModelingUsing data structures, statistical reasoning, and mathematical modeling to support better product decisionsPostgreSQL, Python, statistics, optimization, stochastic modeling
AI Systems EngineeringProduction-ready AI systems with evaluation, reliability, observability, and cost controlRAG, evals, logging, queues, monitoring, backend architecture
Mathematical FoundationConnecting software engineering with algorithmic thinking, operations research, optimization, and applied modelingMathematical engineering, algorithms, operations research, numerical thinking

I am especially strong in roles and projects where backend engineering meets AI:

  • AI-powered SaaS products
  • LLM applications and agentic workflows
  • backend systems for automation
  • data-driven business platforms
  • fintech, payments, risk, and fraud automation
  • product engineering with strong technical ownership

The positioning is deliberate: backend/full-stack ownership with AI systems, automation, and applied mathematical reasoning built into the product architecture.


Selected Work That Shows the Range

ScopeWhat I builtWhy it matters
Confidential real estate SaaSProduct workflows, admin interfaces, backend services, and mobile-friendly user experienceBusiness platform with real users, operational constraints, and production delivery
Confidential pharmacy operations ERPInventory logic, billing workflows, desktop experience, and offline-ready data handlingOperational software where reliability, stock accuracy, and continuity matter
Confidential marketing automation platformMessaging workflows, integrations, campaign automation, and scalable backend flowsAutomation system designed for high-volume business communication
Confidential fleet management platformWeb administration, mobile workflows, and operational dashboardsEnd-to-end platform for managing assets, users, and business processes
Confidential payment workflow integrationsLocal payment flows, transaction handling, and service integration inside web platformsPayment infrastructure adapted to real market constraints
RoadControlSmart Cities hackathon project for urban traffic analysisAward-winning teamwork, applied problem solving, and civic-tech execution

Most of my serious work is private because it belongs to clients, startups, or active products. I protect client confidentiality: no private screenshots, no client-owned source code, no sensitive technical architecture, and no details that can expose a partner or customer. The public GitHub is the surface. The shipped systems are the proof.


My Engineering Operating System

1. Clarify the product goal before touching the code.
2. Design the smallest architecture that can survive real usage.
3. Build interfaces that feel obvious, fast, and trustworthy.
4. Keep APIs predictable, documented, and easy to extend.
5. Optimize for delivery without sacrificing maintainability.
6. Communicate clearly, especially when the problem is still blurry.

I like software that feels calm on the outside and disciplined on the inside: clean UX, readable code, strong data flow, and architecture that does not collapse when the product grows.


Current Stack Focus

Frontend stackBackend stackApplied AI systemsMobile stackDesktop stack

constchabel={role: "Backend & Full-Stack Software Engineer",location: "Benin, building internationally",mode: "remote-first",core: {frontend: ["React","Next.js","Angular","TypeScript","Tailwind CSS"],backend: ["Node.js","NestJS","Java","Spring Boot","Spring Security","REST APIs"],mobileAndDesktop: ["React Native","Expo","Electron.js","Kotlin","Swift"],databases: ["PostgreSQL","MongoDB","MySQL","SQLite"],},aiSystems: ["LLM integrations","AI-powered workflows","transcription systems","automation","RAG and retrieval systems","structured outputs","AI evaluation",],mathematicalFoundation: ["algorithms","optimization","operations research","statistics","stochastic modeling","applied AI",],loves: ["SaaS","clean UX","reliable backend architecture","AI systems","shipping fast","high-agency delivery",],positioning:
"Backend/full-stack engineer with applied AI systems, automation, and mathematical modeling in the architecture.",};

GitHub Pulse

Chabel Bossa GitHub statsTop languages

GitHub streak


If You Are Hiring, Start Here

I am a strong fit for teams that need someone who can move across the stack while still caring deeply about architecture, product quality, and real-world delivery.

  • You need a backend engineer who can design APIs, business logic, data models, integrations, and reliable services.
  • You need a full-stack engineer who understands frontend, mobile, backend, and product constraints.
  • You need someone who can work on SaaS platforms, dashboards, automation systems, payment workflows, and internal tools.
  • You need an engineer who can contribute to AI-powered products, LLM integrations, automation, and AI systems engineering.
  • You need someone comfortable with remote collaboration, ownership, execution speed, and technical communication.

The best conversations to have with me:

  • Designing NestJS or Spring Boot APIs.
  • Building SaaS products from zero to usable.
  • Creating polished React, Next.js, Angular, or React Native interfaces.
  • Integrating payment systems, messaging tools, dashboards, and business workflows.
  • Connecting AI models to real products through APIs, automation, transcription, and structured workflows.
  • Turning a rough idea into a real product plan.

Connect

If the work above matches what you are building, the fastest path is simple:

What you needBest place to go
Start a conversationEmail me directly
See my work and positioningVisit chester-dev.com
Connect professionallyFind me on LinkedIn

Email ChabelPortfolioLinkedIn

Respect the craft. Judge the shipped work.

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