Sushant Kumar

Software Engineer II

Building high-throughput, fault-tolerant distributed backend systems, event-driven architectures & microservices.

Public Repos

Followers

Java Spring Boot Apache Kafka Go C++ Python Kubernetes Docker Helm Keycloak PostgreSQL MongoDB Redis OAuth2 Camunda ELK Stack

National Institute of Technology Sikkim

Aug 2018 – May 2022

Professional Experience

Conology GmbH • Bangalore, India

March 2024 – Present

Architected a dual-format messaging bridge in carrier gateways, decoupling legacy SOAP/WSDL transactions to TMF-compliant JSON via Apache Kafka, reducing p99 latency by 85% (1.2s to <90ms).
Designed a tenant delegation framework decoupling core order-processing logic, reducing client onboarding time from weeks to 2 days.
Engineered real-time Kafka messaging integration on Confluent Cloud (10M+ daily events) with DLQs and idempotency keys.
Designed event-driven platform notification service in Spring Boot/Kafka with MongoDB local caching for sub-second email delivery.
Implemented Keycloak OAuth 2.0 unified security gateway across 15+ microservices.

Enfusion • Bengaluru, India

Jan 2022 – March 2024

Optimized core order processing pipelines for electronic trading platform executing up to 450K daily orders at 99.99% availability.
Redesigned Auto Short Locate validation system and End-of-Day batch processing pipeline scaling ingestion to 300M+ records.
Refactored pre-trade risk check validation service, reducing latency by 90% (5+ mins to <30s).
Built low-latency FIX protocol adapters with custom byte-level message decoding for sub-millisecond order routing.

Implemented RemoveRequiredActionStepProvider to allow admins to remove required actions during workflow execution.
Extended NotifyUser workflow step to support configurable email targets including alternate users and mailing lists.

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