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Angel Mandujano

@angelmandujano

Backend engineer building Java and Spring Boot services at BlackRock Mexico and a real-time GPS tracking SaaS.

At BlackRock Mexico, I contributed to migrating a legacy C++ trading rules engine to Java while preserving behavioral compatibility. I also built Java and Spring Boot services for financing applications, including event-sourced flows with Akka.

At tokenproof, I designed and built a Golang API Gateway for authentication and rate limiting on Kubernetes. I also built KYC integrations, wallet authentication, and digital-asset purchase flows for Ethereum and Solana.

At Oracle Mexico, I designed Python and Java ML data-preparation pipelines and REST endpoints, orchestrated on Kubernetes and Kubeflow in Oracle Cloud. Earlier, at Innomius Technologies, I built the backend of a real-time IoT sensor platform and architected its data lake on AWS.

I'm building urbanhubtrack.com, a multi-tenant real-time GPS tracking SaaS, as its sole engineer. I wrote its Python route optimization module with Google OR-Tools, and the product is in pilot with its first client.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Independent

Jan 2026 - Present (9 months)

Building urbanhubtrack.com, a multi-tenant real-time GPS tracking SaaS as sole engineer across backend, frontend, infrastructure and deployment; in pilot with its first client. Wrote the route optimization module in Python with Google OR-Tools and chose Supabase for authentication and realtime subscriptions.

TypeScript Python React Supabase Drizzle Zod OR Tools Docker GitHub Actions

Associate Software Engineer

BlackRock Mexico

Mar 2025 - Jan 2026 (10 months)

Contributed to migrating a legacy C++ trading rules engine to Java for a mission-critical securities-markets system, translating its rules and SQL query layer while preserving behavioral compatibility. Built Java and Spring Boot services for financing applications, including event-sourced flows with Akka, and wrote Cucumber (BDD) tests.

Java Spring Boot Akka Cucumber SQL Server Azure

Software Engineer

tokenproof

Sep 2022 - Jun 2024 (1 year 9 months)

Designed and built a Golang API Gateway providing authentication and rate limiting on Kubernetes. Built KYC integrations, wallet authentication and digital-asset purchase flows on Ethereum and Solana in TypeScript and NestJS, and designed an asset-gated ticket sales SaaS with the product owner.

TypeScript NestJS Go Java Pub Sub PostgreSQL MongoDB Stripe Kubernetes GCP AWS

Principal Application Engineer

Oracle Mexico

Jul 2021 - Aug 2022 (1 year 1 month)

Designed ML data-preparation pipelines and REST endpoints in Python and Java for multiple internal teams, orchestrating the workloads on Kubernetes and Kubeflow in Oracle Cloud with MLflow tracking.

Python Java Spring Boot Kubernetes Kubeflow MLFlow OCI Oracle JET

Backend Engineer / Data Scientist

Innomius Technologies

Mar 2017 - Jul 2021 (4 years 4 months)

Built the backend of a real-time IoT sensor platform (Kafka ingestion, Apache Camel and Spring Boot integrations, WebSocket delivery) and architected its data lake on AWS.