Mohammad Enamul Haque

Senior / Lead Backend Engineer
📍 Frankfurt Region, Germany 🔗 LinkedIn ✉️ Email Me

Professional Summary

Results-driven Senior Backend Engineer with deep technical expertise within the Fintech domain. Specializing in designing highly scalable, secure architectural systems, leading transactional backend development, and optimizing complex financial API ecosystems. Highly proficient in orchestrating mission-critical integrations with open banking and investment-as-a-service providers including finAPI and Upvest, alongside enterprise CRM synchronization platforms. Proven expert in modern PHP frameworks (Laravel), Java (Spring Boot), and rigorous automated testing architectures to deliver robust, compliant software solutions.

Professional Experience

Senior Software Engineer (Backend)

INAIA GmbH
February, 2021 - Present
  • Lead the architectural design and development of critical backend systems, ensuring high availability, security, and scalability for growing user bases.
  • Architect and maintain complex, bidirectional API integrations with core financial and compliance infrastructure, notably executing secure transaction workflows with finAPI and Upvest, while engineering real-time identity verification pipelines utilizing WebID and Veriff.
  • Establish and enforce high code quality standards by adopting test-driven development (TDD), utilizing the Pest framework to increase test coverage and reduce production bugs.
  • Optimize database queries and refine existing Laravel applications, significantly reducing API latency and improving overall system performance.
  • Collaborate closely with cross-functional teams to define technical roadmaps, translating business objectives into actionable engineering sprints.

Senior Software Engineer

Butler Hospitality
October, 2018 – January, 2021
  • Real-time Order Processing & Logistics: Engineered backend APIs and real-time event-driven workflows to handle high-volume guest order-routing and room service logistics, minimizing processing latency between hotel guests, partners, and kitchen fulfillment hubs.
  • Asynchronous Systems & Cloud Infrastructure: Implemented scalable background job management and message streaming solutions to handle heavy asynchronous processing spikes, deploying services natively on AWS cloud infrastructure.
  • Automated Testing & Stability: Established strict Test-Driven Development (TDD) best practices by introducing comprehensive unit and integration testing workflows, reducing software regression issues in production pipelines by over 20%..

Senior Software Engineer

Field Nation, LLC
October, 2014 – October, 2018
  • Architected and deployed high-throughput RESTful APIs using PHP to power seamless iOS and Android mobile experiences, optimizing request-response times for cross-platform users.
  • Led complex enterprise API integrations (including Salesforce, ServiceNow, etc.), ensuring secure, resilient data synchronization and smooth payment processing.
  • Participated in Agile/Scrum ceremonies, contributing to sprint planning and retrospective improvements.
  • Used modern automated testing strategies across microservices, decreasing production bugs and accelerating deployment pipelines.

Early Career History

Technical Expertise

Backend & Frameworks

PHP (Advanced) Laravel Java Node.js RESTful APIs GraphQL

Architecture & Data

System Design Microservices MySQL / PostgreSQL Redis Amazon Web Services(AWS) FinAPI Upvest APIs WebId / Veriff Redis Zoho CRM APIs

Leadership

Technical Mentorship Agile / Scrum Sprint Planning Cross-functional Sync Project Management (Google Certified)

Testing & Quality

Pest PHPUnit TDD / BDD CI/CD Pipelines Code Review

Education

Bachelor of Science in Computer Science and Engineering

American International University - Bangladesh
2012

Comprehensive academic foundation specializing in advanced software engineering principles, architectural patterns, distributed systems design, and scalable database management.