Available · Q3 2026 · Mumbai, IN · UTC+5:30

Backend that doesn't flinch under load.

I'm Krushang Shah, a backend software engineer building FastAPI services, concurrency-safe architectures, and async pipelines on Redis, Celery and Kafka — shipped to production in healthcare, real estate, and compliance.

Start a conversation Resume GitHub
krushang@prod ~ deploy.sh zsh
2.5yrs
Shipping production backends
0loss
Data loss · Kafka retry pipeline
3 → 1%
Backend failure rate reduction
50+
Regulatory workflows powered
01 — Profile

Backend engineer with a bias for production reality — schemas that hold, retries that resolve, and services that stay green.

I've spent the last 2+ years inside one engineering org — Openspace Services — owning backends end-to-end for healthcare, real-estate, and compliance products. The work isn't speculative: live events with thousands of concurrent users, CRM migrations with zero acceptable data loss, regulatory workflows the business depends on.

I focus on the unglamorous parts that decide whether a system survives — schema integrity, idempotent retries, lock contention, observability — while keeping iteration speed up with FastAPI, async pipelines and AI-assisted workflows. Comfortable across the stack from MySQL tuning to Docker, Nginx and Linux server work.

02 — Stack

The toolkit, ordered by how often I reach for it in real production work.

Backend services

FastAPI microservices, REST contracts, async I/O, role-based access, request validation — the day-job core.

PythonFastAPIPydantic RESTMicroservicesRBAC

Databases & storage

Schema design, query optimisation, lock contention work, hybrid SQL/NoSQL — relational where integrity matters, document where shape changes.

MySQLMongoDBIndexing Query tuningMigrations

Async & events

Celery workers, Redis queues, Kafka pipelines with idempotent retries.

CeleryRedisKafkaFlower

DevOps & infra

Docker, Nginx + SSL, Linux server tuning, deployments without drama.

DockerNginxLinuxSSL/TLS

Cloud (AWS)

EC2 deploys, S3 storage, SES transactional email — practical AWS, not certification theatre.

EC2S3SESIAM

AI-assisted engineering

Use LLMs as leverage: prompt-driven scaffolding, codegen for boilerplate, debugging accelerants — measured, not magical.

OpenAI APIsPrompt engineering AI workflowsAutomation

Tools & workflow

Git-driven workflow, Postman/Insomnia for API contracts, Flower for Celery observability, server-side log spelunking.

GitPostmanFlowerLinux CLI
03 — Selected work

Production systems shipped at Openspace Services — three projects, three problem shapes.

Dec 2023 — Present
Backend Engineer
MyHealthMeter
Digital health platform
Mobile app + CRM backend

Healthcare backend, rearchitected for reliability.

FastAPI · MySQL · MongoDB · Celery · Redis · Kafka · Cloud Storage
  • Reduced backend failure rate from 3% → 1% by rearchitecting MySQL schemas, hardening validation layers, and redesigning API flows across auth, appointments and CRM.
  • Engineered a Kafka-based retry & reconciliation pipeline during the CRM migration — failed order syncs recovered automatically via backoff retries and idempotent processing.
  • Cut file-upload and notification latency by offloading parsing, SMS/email triggers, and report generation to Celery + Redis async workflows.
  • Strengthened CRM data integrity with role-based access control and secure cloud-storage uploads.
FastAPIMySQLMongoDB KafkaCeleryRedis
−66%
Failure rate
0
Manual recoveries
async
Notify + report
Backend Engineer
HOABL × Xanadu
India's first online
home-selling event

Zero double-bookings, thousands concurrent, live.

FastAPI · Redis · MySQL · Node.js · concurrency architecture
  • Architected a concurrency-safe microservice governing round-based inventory allocation — zero double-bookings during a live event with thousands of concurrent buyers.
  • Maximised conversions across 19 towers × 35 floors via a round-robin allocation algorithm with dynamic availability bands and dummy-user simulation.
  • Enabled sub-second state transitions by integrating Redis for live coordination with the Node.js realtime service.
  • Minimised round-transition delays at peak load by optimising MySQL queries and reducing lock contention.
FastAPIRedisMySQL Node.jsConcurrency
0
Double-bookings
19×35
Inventory grid
<1s
State transitions
Backend Engineer
WeProcess
Compliance management
portal

Compliance backend powering 50+ regulatory workflows.

FastAPI · MySQL · Redis · Celery · Flower · React (integration)
  • Built the compliance-tracking backend powering 50+ government-mandated regulatory workflows.
  • Improved API performance 25–30% by introducing Redis caching on high-frequency endpoints.
  • Enabled reliable async execution for scheduled compliance jobs via Celery + Flower with full observability.
  • Cut frontend integration time ~20% by shipping clean, predictable REST contracts consumed by the React UI team.
FastAPIMySQLRedis CeleryFlower
+30%
API perf
50+
Workflows
−20%
FE integration time
Cross-project
End-to-end ownership
Architecture → ship → operate

From schema to systemd — the full delivery loop.

Architecture · development · testing · deployment · monitoring
  • Independently delivered production systems spanning architecture, development, testing, deployment and monitoring — Docker-based microservices, Nginx + SSL configuration, and server performance tuning.
  • Diagnosed and resolved cross-stack issues through deep-dive debugging across backend, database and infrastructure layers — the work that doesn't show up in tickets.
DockerNginxSSL LinuxServer tuningObservability
04 — Architecture

A reference shape of the systems I ship — request to durable side-effect, with retries built in.

EDGE APPLICATION ASYNC + STORAGE CLIENT App / Web EDGE Nginx · SSL APPLICATION FastAPI · async RBAC · Pydantic RELATIONAL MySQL CACHE Redis BUS Kafka WORKERS Celery idempotent retry AWS S3 · SES Docker · Linux · monitoring · structured logs
Edge
Nginx terminates SSL, fronts the app, isolates blast radius.
Application
FastAPI services — async I/O, Pydantic contracts, RBAC.
Async & events
Kafka for durable event flow; Celery for jobs you can't lose.
Durable side-effects
S3 for blobs, SES for transactional mail, MySQL for source of truth.
★

Rising Star of the Year — Openspace Services

Selected from 100+ peers for ownership, delivery impact, and technical depth.
FY 2024–25
05 — Contact

Have a backend that needs to hold up under real load? Let's talk.

krushangkrinesh@gmail.com

Open to backend, cloud, and AI-systems roles — full-time or contract. Fastest response by email, usually within the day.

Send an email Download resume
Emailkrushangkrinesh@gmail.com
Phone+91 99202 36644
LocationMumbai, India · UTC+5:30
GitHub@Krushang21 ↗
Status● Available for new work
Tweaks
Accent
Terminal loop
Grain texture