Backend & core systems
Design and maintain scalable backends, banking integrations (EFT, cheque truncation), APIs, and data layers—with PostgreSQL, MS SQL, and SQL-first thinking. Focus on uptime, reliability, and clear boundaries between services.
Welcome
Data & AI engineer building intelligent systems in fintech and health
Hello, I'm Boyd Chanza
Software engineer · backend, data & applied AI
I build reliable backend systems, data pipelines, APIs, and AI-assisted products—mostly in Elixir, Phoenix, and Flutter—with years of experience in banking and fintech in Zambia.
Based in Lusaka, Zambia!
About Me
Welcome to my corner of the internet!
I’m a technology professional with 6+ years across software development, systems support, and technical leadership in banking and fintech. I design and deliver scalable backend systems, lead cross-functional teams, and keep mission-critical platforms running in fast-paced environments. My strengths sit in backend engineering, relational databases (PostgreSQL, MS SQL Server), and data analytics, with growing depth in applied AI. I care about modular architectures, API-driven services, and solutions that work in the real world—including low-resource settings. I’m motivated by digital health and fintech use cases where strong systems and careful AI can improve how people access services and make decisions.
Expertise
What I do
What I do
Systems leadership & delivery
Lead support and implementation teams, coordinate vendors, ship rollouts to financial institutions, and keep production systems above ~95% uptime—with disciplined documentation and stakeholder communication.
AI, data & applied analytics
Build AI-assisted workflows—health intelligence, document understanding, analytics in R—and integrate models (e.g. Vertex AI, Gemini) where they add real value, with security and consent in mind.
Portfolio
Selected works
01
Athena — AI brand assistant
Personal project · 2026
Production-style AI brand automation in Elixir and Phoenix LiveView: generate, schedule, and publish social content with human-in-the-loop approvals. Integrates Google Gemini, LinkedIn/Facebook posting, Google Calendar-aware scheduling, and Auth0 for AI agents with Token Vault so OAuth secrets never land in the app DB. Uses PostgreSQL, Oban for jobs, and a clear split between AI reasoning, identity, and execution.
ElixirPhoenix LiveViewPostgreSQLObanGeminiAuth0
Visit site →02
Niyah — AI insights from books & PDFs
Founder & lead engineer · 2025
Mobile app that turns books and PDFs into insights, summaries, and optional audio—with anonymous UUID onboarding, tiered pricing, and Google Vertex AI for understanding and TTS. Flutter client, Elixir/Phoenix APIs, tuned for unit economics and a smooth path from anonymous use to a full account.
FlutterElixirPhoenixVertex AIMobile
Visit site →Stack & tools
Skills
Technologies and domains I work with day to day—aligned with my CV and recent projects.
Languages & frameworks
- Elixir
- Phoenix & LiveView
- Flutter
- SQL
- R
Data & platforms
- PostgreSQL
- MS SQL Server
- REST APIs
- Oban
AI & integrations
- OpenAI
- Vertex AI
- Gemini
- Auth0
- Token Vault
Banking & delivery
- Core banking
- EFT
- Cheque truncation
- Production support
- Vendor coordination
Posts
Recent thoughts
2026 · Updates
Building Athena — agents, OAuth, and safe token handling
Notes on Auth0 Token Vault, private-key JWTs, and keeping AI agents on the right side of the trust boundary—more on LinkedIn.
Connect on LinkedIn →2025 · Product
Shipping Niyah — from PDFs to insights without signup friction
Why anonymous-first onboarding, pricing tiers, and Vertex AI came together the way they did.
Connect on LinkedIn →2024 · Data
Analytics, R, and real statements from mobile money
Lessons from classifying MTN and Airtel flows and turning them into dashboards users actually open.
Connect on LinkedIn →Let's create something together
I'm open to conversations about backend engineering, AI-assisted products, fintech, and health tech—whether that's a project, a collaboration, or a quick question.