Available for new opportunities

Hi, I'm Zeb.
Building resilient software at scale.

Senior Software Engineer / Lead with 14+ years shipping Java/Spring Boot microservices and modern React/Angular/Vue frontends across FinTech, Healthcare, Property, and Transport.

Brussels, Belgium
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About

Full-stack engineering, end to end.

Senior Full Stack Engineer with 14+ years building scalable enterprise solutions across FinTech, Healthcare, Property, and Transport sectors. Expert in Java/Spring Boot microservices architecture and modern frontend frameworks (React, Angular, Vue). Proven track record leading offshore teams, implementing CI/CD pipelines, and delivering cloud-native applications on AWS/Azure. Strong focus on security, performance optimization, and Agile methodologies.

Skilled in architecting scalable, maintainable and secure applications tailored to business requirements.
Proficient in developing RESTful services using Java (8, 11, 17, 21), Spring Boot and Node.js.
Extensive experience designing, developing, debugging, and deploying applications.
Proven ability to manage large-scale applications.
Competent in database design and optimization.
Adept at leading mid-sized offshore teams to deliver client solutions.
Skilled in containerization (Docker) for efficient application deployment and management.
Proficient with Azure and AWS for scalable, resilient microservices architectures.
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Years of Experience
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Companies
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Industries
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Client Projects Shipped
Skills

Technologies I work with.

Languages & Backend

Java (8–21)
Spring Boot
Quarkus
Spring Web
Spring Batch
Spring Security
Spring JPA / Hibernate
Node.js
Express.js
C# / .NET

Frontend

TypeScript (ES6)
JavaScript
React.js
Next.js
Angular / AngularJS
Vue.js
Redux
Material UI

Testing

JUnit
JAssert
Mockito
TDD / DDD

Data & Messaging

PostgreSQL
MySQL
PL/SQL (Oracle)
MSSQL
Redis
Kafka
RabbitMQ
ElasticSearch / ELK Stack

Cloud & DevOps

AWS
Azure
Docker
CI/CD Pipelines
Jenkins
TeamCity
Nginx
HashiCorp Vault
Kubernetes-ready Microservices

Practices & Tools

Microservices Architecture
RESTful APIs
OpenAPI Specification
OAuth / OpenID Connect
SOLID / DRY Principles
OWASP
Git
JIRA / Confluence
SonarQube
Postman
Experience

14+ years across FinTech, Healthcare, Property & Transport.

International Postal Corporation facilitates cross-border mail exchange between postal operators worldwide, enabling secure interchange transmission and reference data management for routing decisions across the global postal network.

  • Designed and implemented an AS2-based interchange solution using the Mendelson library and Spring Boot, enabling secure B2B communication between postal operators as an alternative to legacy SFTP transfers, supporting encryption and digital signing.
  • Developed a full-stack reference data management system with React and TypeScript, enabling internal teams to configure routing rules and interchange flow logic.
  • Built REST APIs with Spring Boot 6 following an OpenAPI specification-first approach with openapi-generator-maven-plugin, ensuring consistency between frontend and backend.
  • Built a modern React application using TypeScript, React-Hook-Form, Material UI, and TanStack Query for managing reference data driving interchange routing decisions.
  • Collaborated within an Agile team of 5 developers across sprint planning, stand-ups, and retrospectives using GitLab and JIRA.
Java 21Spring Boot 6HibernateTypeScriptReactReact-Hook-FormMaterial UITanStack QueryGitLabJIRAMaven

Passenger information systems providing real-time updates via displays and announcements, onboard communication systems, condition monitoring, and integrated train control solutions.

Ruler is comprehensive compliance software helping financial-sector organizations manage legal, risk, and compliance processes across Ruler Original, Regulatory Change, and Risk Assessment tools.

A configuration service allowing various services to define and store dynamic configurations, with real-time updates via a PubSub service over TCP/IP and a JSON-based dynamic schema, built to handle high traffic and large data volumes.

Software house delivering multiple client projects. Led architecture, direct client communication, supervised and trained team members, and managed releases across projects.

A powerful, seamless system for automobile leasing supporting asset-based financing, including the Credit Application Processing System.

ERP system managing internal business processes including Field Force Management, Supply Chain Management, and Inventory Management, with third-party integrations.

Selected Work

Projects worth highlighting.

IPC Reference Data Platform

2025 — Present

AS2-based secure interchange solution for cross-border postal operators, replacing legacy SFTP transfers with encrypted, digitally signed B2B communication. Full-stack reference data management system for routing configuration.

Specification-first API design generating contracts, models & interfaces automatically.
Java 21Spring Boot 6ReactTypeScriptTanStack Query

ColumnCase — Case Management

2020 — 2021

Web-based case management software for managing investigations, with configurable workflow engine across different case types and enterprise SSO integrations.

Added OKTA & Azure OAuth flows; improved REST service performance & structure.
Java 11Spring BootAngular 14OAuth2/OIDCPostgreSQL

Hummingbird — Property Management

2019 — 2020

Self-storage property management platform handling properties, units, clients and billing at scale, architected as resilient microservices with full integration test coverage.

Led the team that shipped this product to 25+ clients.
Node.jsExpress.jsVue.jsKafkaAWS

Social Impact Bond — Healthtech

2017 — 2019

Healthcare system connecting insurance companies with healthcare providers via scalable backend services consumed by Vue frontends.

Delivered to agreed design and timeline for a regulated healthcare domain.
Java 8HibernateAngular 7PL/SQLAzure
Education

Foundations.

BS Computer Science

Air University, Islamabad, Pakistan

2008 — 2012

Introduction to Programming, Object-Oriented Programming, Data Structures, Algorithms, Advanced Database.

Technical Practices

Design Patterns
Software Architecture (Microservices)
Data Structures & Algorithms
OAuth, OpenID Connect
Cloud Services (AWS, Azure)
SOLID / DRY Principles
TDD / DDD
OWASP
OpenAPI Specification (OAS)
Internet Protocols (HTTP(S), TCP/IP, TLS)
Object-Oriented Design (OOAD)

Leadership & Soft Skills

Agile / Scrum Development
Team Management
Client Communication & Handling
Training and Supervision
Problem Solving
UML / BPMN Diagrams
Leadership
Writing FS / RS Documentation
Attention to Detail
Contact

Let's build something reliable together.

Open to senior/lead engineering roles and consulting engagements. Reach out directly or grab a copy of my full resume.

zeburrehman@gmail.com+32 497 72 30 28
View Resume