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Celestin Indishimiye

@celestinindishimiye

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Senior backend engineer specializing in high-performance Django APIs and data-intensive systems.

United States

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What I'm looking for

I’m looking for a backend role where I can build scalable Django APIs on AWS, reduce latency, and lead async/distributed-system work with Celery/Redis—while partnering closely with product and frontend teams.

I’m a Senior Backend Engineer with 8+ years of experience designing, building, and scaling high-performance Django-based APIs and data-intensive systems. I’ve delivered measurable outcomes like improving system performance with up to 40% latency reduction, using database query optimization and performance tuning, and I’m hands-on with asynchronous processing via Celery and Redis.

I build backend architectures that are reliable in production, with strong expertise in AWS infrastructure, distributed systems, and writing maintainable, scalable code. In recent roles, I’ve led refactoring to decouple tightly coupled modules, strengthened engineering practices through better code reviews/testing/deployment workflows, and implemented secure authentication (sessions, JWT, OAuth) and background processing to keep request paths responsive.

Experience

Work history, roles, and key accomplishments

Senior Backend Engineer

Geo Solve

Jan 2020 - Feb 2026 (6 years 1 month)

Owned and scaled high-volume Django-based backend systems serving production traffic. Reduced average API response times by 40% via database query optimization and performance tuning, and implemented Celery/Redis async processing to cut request latency.

Django Django REST Framework RESTful APIs PostgreSQL Performance Tuning Celery Redis AWS

Backend Engineer

Infantium S.L

Mar 2020 - Oct 2023 (3 years 7 months)

Designed and delivered backend features for a production application, evolving database schemas while maintaining performance and data integrity. Implemented authentication (sessions, JWT, OAuth), reduced API latency through query optimization and caching, and improved stability with unit and integration tests.

Database Schema Design SQL JWT OAuth Caching Unit Testing Integration Testing Data Integrity

Backend Developer

Elements Interactive

May 2017 - Jan 2020 (2 years 8 months)

Built backend systems for e-commerce including orders, payments, and inventory management, and developed APIs supporting thousands of users. Improved payment workflow reliability by handling edge cases and increased responsiveness by moving heavy processing out of the request lifecycle using background jobs.

Payment Systems Inventory Management Third Party Integrations Reliability Engineering API Development