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vishal mishra

@vishalmishra6

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Backend Engineer (SDE II) specializing in event-driven, fault-tolerant systems with Node.js and Java.

India

Message

What I'm looking for

I’m looking for a backend role where I can design event-driven, fault-tolerant systems, improve latency and reliability, and own async workflows and API performance end to end—while building strong testing and observability practices.

I’m a Backend Engineer (SDE II) with 5+ years of experience building scalable, fault-tolerant backend systems. I focus on event-driven and distributed workflow architectures to improve reliability and performance, especially in latency-sensitive flows.

In my current role, I re-architected synchronous remittance flows into async Temporal workflows with configurable retries, reducing user wait time by 45% while improving fault tolerance for failed steps. I also optimized APIs and SQL queries to cut latency by 65%, and implemented Redis distributed locking for exactly-once webhook processing.

I’ve strengthened system quality through reliable testing pipelines—using Docker-based ephemeral Kafka/Redis containers with Testcontainers and mocked third-party services for success/failure/timeout scenarios. Previously, I built a dynamic query builder with runtime schema discovery, and contributed to rule-based event-driven lead validation and loan eligibility APIs processing 100–250 applications/day.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer (SDE II)

Current

Barq

Oct 2024 - Present (2 years 1 month)

Re-architected remittance flows into async, event-driven Temporal workflows with configurable retries, reducing user wait time by 45% and improving fault tolerance. Optimized APIs and SQL queries, and implemented Redis distributed locking for exactly-once webhook processing with integration testing using Docker-based Testcontainers.

NestJS Kafka MySQL Redis Temporal Elastic Kibana Grafana Event Driven Architecture Redis Distributed Locking SQL Query Optimization Integration Testing Test Containers Docker

Backend Developer

CronJ

Sep 2023 - Jul 2024 (10 months)

Built a dynamic query builder with runtime schema discovery to allow selecting tables and columns across databases, auto-generating SQL queries. Persisted query generation metadata in PostgreSQL alongside source DB metadata.

PostgreSQL SQL Runtime Schema Discovery Metadata

Junior Backend Engineer

Flexiloans

Mar 2022 - Aug 2023 (1 year 5 months)

Built a rule-based, event-driven lead validation pipeline that fetched lead data and validated it against business rules via database stored procedures. Contributed to loan eligibility APIs assessing applicants using income and 6-month bank statement history.

S3 MySQL MongoDB SNS Cloudwatch Event Driven Architecture Stored Procedures Loan Eligibility APIs

Software Engineer

CitiusTech

Nov 2020 - Mar 2022 (1 year 4 months)

Wrote HiveQL and SQL queries to aggregate healthcare data across multiple tables and databases. Powered client-facing reports and dashboards using Tableau.

SQL Tableau Data Aggregation Reports And Dashboards