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Surajit Das

@surajitdas

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Backend engineer at LogixFleet building a multi-tenant fleet platform and real-time payments and telemetry pipelines.

Kenya

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At LogixFleet, I architected a multi-tenant fleet platform spanning vehicle telemetry, Stripe and M-Pesa payments, and scheduled transaction reporting. I built a real-time FastAPI, Kafka, and Celery webhook pipeline, and shipped FleetPing while open-sourcing its ingestion core as Siphyy Core.

At Credrails, I extracted legacy reporting routines into an asynchronous microservice and reduced report generation latency by approximately 70%. Across fintech, analytics, logistics, and healthcare, I've worked on payment systems, event-driven platforms, and financial data workflows.

Experience

Work history, roles, and key accomplishments

Current

Principal Systems Engineer

Current

LogixFleet

Jul 2025 - Present (1 year 3 months)

Architected a multi-tenant fleet platform with vehicle telemetry, payments, and scheduled reporting. Built real-time FastAPI, Kafka, and Celery webhook pipelines and developed time-series anomaly detection on partitioned PostgreSQL tables.

fastAPI Kafka Celery PostgreSQL Stripe M Pesa Webhooks Time Series Anomaly Detection Docker AWS

Senior Software Engineer

Credrails

Feb 2024 - Jun 2025 (1 year 4 months)

Extracted legacy reporting routines into an asynchronous microservice using Django, Celery, Redis, and Kafka. Reduced report generation latency by approximately 70% and built accounting ledger ETL pipelines with Pandas and PostgreSQL partitioning.

Django Celery Redis Kafka Pandas PostgreSQL ETL Partitioning REST APIs

Senior Backend Engineer

Hotjar

May 2022 - Feb 2024 (1 year 9 months)

Refactored mission-critical payment gateways from a monolith into decoupled microservices for webhooks and self-healing callbacks. Achieved 99.9% audit log ingestion integrity for compliance workflows.

Microservices Webhooks Payment Gateways Audit Logging Integration Testing Python Django

Senior Backend Engineer

PoweredbyPeople

Mar 2020 - Apr 2022 (2 years 1 month)

Designed enterprise abstractions for payment channels, asynchronous notifications, and daily reconciliation ledgers. Migrated message streaming to confluent-kafka, increasing event throughput by 10x, and implemented OAuth2/SSO with Hydra and Tyk API gateway.

Kafka OAuth SSO Hydra Tyk Gateway Payment Channels Reconciliations Event Streaming