Ruth T

I’m a backend and infrastructure-minded engineer with 5+ years building and operating distributed, event-driven systems in security-sensitive fintech environments. I’m hands-on from design through production support, comfortable navigating ambiguity, and I like owning problems end-to-end.

At Kifiya Financial Technologies, I designed and operated Go, Java (Spring Boot), and Python (FastAPI) microservices for a regulated digital financing platform, including a production reconciliation engine for multi-system financial data matching. I customized the Apache Fineract core, extending domain models and lifecycle logic where correctness and auditability matter. I also built and hardened service-to-service security with mTLS and access control, and deployed containerized services on self-managed Linux with reproducibility and rollback safety.

I’ve built event-driven and multi-pass matching pipelines with idempotency and fingerprint-stability guarantees, and I run Prefect ETL pipelines with PostgreSQL/Metabase reporting for risk and regulatory monitoring. Previously, at Rahove Technologies, I designed real-time GraphQL APIs (Graphene) and owned production operations for VPS-hosted APIs, including monitoring, availability, and on-call incident response. As a freelance Full-Stack Developer, I focus on secure, scalable, maintainable API design and production-grade security fail-safes.

My differentiator is a security-first, reliability-focused ownership mindset—shipping systems where mTLS, OAuth2 patterns, and access control are built “secure-by-default.” I’m actively expanding into Kubernetes and infrastructure-as-code (Terraform), leveraging a strong foundation in containerization and distributed systems to keep improving how I deliver.