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.