./work ./stack ./certs ./blog ./contact
akshay@portfolio — zsh
$ cat about.md
Akshay Sonwalkar
Senior Backend Engineer @ AntStack
I build serverless backends that scale. Specializing in AWS, event-driven architectures, and cloud-native platforms — with a focus on clean code, reliable systems, and developer tooling.
Based in Pune, India.
0+
YEARS EXP
0+
AWS SERVICES
0
BLOGS PUBLISHED
$ echo $learning
> AI/LLMs, AWS CDK, Supabase, Prisma
$ ls -la ./experience

Experience

Senior Backend Engineer (MTS-3)Apr 2025 — Present
AntStack

Took end-to-end ownership of the InOffice internal productivity platform — migrating services from Serverless Framework v3 to AWS SAM, implementing new features, resolving production issues, and integrating OnLeave (third-party leave management system) to automate employee leave sync.
Deliver new product features and fix critical issues on the YUM client project.

AWS SAMNode.jsTypeScriptSlack AppServerless Migration
Backend Engineer (MTS-2)May 2023 — Mar 2025
AntStack — FinTech Platform

Built and scaled serverless APIs for a fintech invoice factoring platform using Node.js, TypeScript, AWS Lambda, PostgreSQL, and S3. Improved PostgreSQL query performance with optimized indexing and joins, resulting in 4x faster API response times. Designed event-driven processing for invoices from app uploads and emails.

PostgreSQLLambdaS3JestFinTech
Backend Engineer (MTS-1)Feb 2022 — Apr 2023
AntStack — InsurTech

Developed and managed serverless APIs using AWS Lambda, API Gateway, S3, Step Functions, EventBridge, and DynamoDB. Implemented ES build for optimized Lambda packaging, reducing cold start latency. Designed an event-driven integration hub to support the blue-green migration process.

API GatewayStep FunctionsDynamoDBEventBridgeS3Serverless Framework
Web DeveloperOct 2021 — Feb 2022
Welldone Healthcare

Designed and established the foundational codebase and database schema for the healthcare web app using Django. Integrated Google Maps for location services and built a secure login system. Created responsive web pages for a consistent experience across devices.

DjangoPythonGoogle MapsDatabase DesignResponsive UI
$ cat ./skills.json

Stack

BACKEND
Node.js / TS
PostgreSQL
DynamoDB
Python
Event-Driven
AWS SERVICES
AWS SAM / CDK
Lambda
API Gateway
S3
EventBridge
QUALITY & TOOLS
Jest
SonarCloud
ES Build
Git / CI-CD
Zod
$ cat ./certifications.json

Certifications & Education

SA
AWS Solutions Architect — Associate
Amazon Web Services
Designing distributed systems, cost optimization, and architecting resilient, high-performing solutions on AWS.
VERIFIED
50
CS50's Web Programming
Harvard University (edX)
Web development with Python, JavaScript, SQL, HTML, CSS, Django, and React. Full-stack project-based curriculum.
COMPLETED
CP
Ultimate AWS Certified Cloud Practitioner
Udemy
Comprehensive coverage of AWS Cloud concepts, services, security, architecture, pricing, and support fundamentals.
COMPLETED
B.E. Computer Engineering
Savitribai Phule Pune University
2017 — 2020
Diploma, Information Technology
Govt. Polytechnic, Solapur
2014 — 2017
$ ls -la ./blog

Blog & Open Source

JUN 2024 · ANTSTACK · 3 MIN
How to Keep Your AWS ECR Repository Lean with Serverless
Tackle inflated ECR storage costs with the serverless-ecr-image-cleaner plugin. Auto-clean old container images after every deployment with simple YAML config.
AWS ECR Serverless Plugin DevOps
NOV 2023 · ANTSTACK · 5 MIN
Automating Time-Based Actions Using EventBridge Scheduler or DynamoDB TTL & Streams
Two serverless approaches to scheduling tasks — compare EventBridge Scheduler vs DynamoDB TTL with DDB Streams for automated time-based execution.
EventBridge DynamoDB TTL Streams
JUL 2021 · MEDIUM · 2 MIN
How to Deploy a Django Application on Heroku
Step-by-step guide covering Procfile setup, security hardening with Django's deploy check, Heroku CLI deployment, and production-ready configuration.
Django Heroku Python Deployment
$ npm search serverless-ecr-image-cleaner
npm
serverless-ecr-image-cleaner
Published on npm
A Serverless Framework plugin that automatically cleans up old, unused container images from your AWS ECR repository after deployment. Configure the number of images to keep, target specific repos, and reduce storage costs effortlessly.
Serverless Plugin AWS ECR Node.js
npm i serverless-ecr-image-cleaner
</>
github.com/Sonwalkar
23 repositories
Open source projects, serverless experiments, and backend utilities. Explore my repositories for AWS tools and more.
TypeScript Node.js Python
git clone https://github.com/Sonwalkar
$ cat ./contact.md

Contact

Let's build something great.

Open to discussing serverless architecture, cloud-native solutions, or your next AWS-powered project. Currently based in Pune, India.

>_Pune, Maharashtra, India
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