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Senior Backend Engineer

Building scalable backend systems, fintech platforms, and real-time infrastructure.

Backend engineer with 10+ years of experience designing and operating production systems using Python (Django) and PHP (Laravel/Symfony). Specialized in distributed systems, asynchronous processing, backend reliability, and production engineering.

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Herihaja Rabenaivo
10+ Years Experience
Python + PHP Backend Engineering
Fintech Production Systems

Expertise

Backend engineering focused on scalability, reliability, and production operations.

Backend Engineering

Python, Django, PHP, Laravel, Symfony, REST APIs, WebSockets

Distributed Systems

AsyncIO, Celery, Redis, event-driven systems, real-time services

Databases & Search

PostgreSQL, MySQL, OpenSearch, Elasticsearch, query optimization

Infrastructure

Docker, CI/CD, Linux, AWS EC2, monitoring, observability

Featured Systems

Selected projects focused on fintech, automation, and real-time backend systems.

Event-Driven Trading Infrastructure

Trading Automation Platform

Real-time trading system handling market streams, signal processing, automated trading workflows, monitoring, and operational reliability.

  • AsyncIO services
  • WebSocket integrations
  • Dockerized infrastructure
  • Health monitoring & automated recovery

Fintech Payment Infrastructure

payFlow

Batch payment processing platform focused on scalable financial workflows, asynchronous processing, and backend reliability.

  • Celery + Redis workflows
  • Financial batch processing
  • Reliability-focused architecture
View GitHub →

Production Engineering

I enjoy operating systems as much as building them.

My work goes beyond feature delivery: debugging production incidents, improving observability, optimizing performance, and maintaining operational reliability.

I value pragmatic engineering, maintainable architectures, and systems that remain stable under real-world load.

Career Snapshot

10+ years building backend systems across fintech, SaaS, and data-intensive platforms.

2024 — Present

Senior Backend Developer · Cartezy Technology

Fintech systems, OpenSearch optimization, production debugging, high-volume transaction workflows.

2022 — Present

Fullstack / Backend Developer · SwiftCloud.ai

Symfony, Laravel, real-time systems, distributed remote collaboration.

2011 — 2019

Senior Developer / Deputy Technical Director · HNI (DataWinners)

Django platforms, AWS EC2, team leadership, scalable data systems.

Let's build reliable systems.

Available for remote backend engineering opportunities.

heriinfo@gmail.com GitHub LinkedIn