I’m Arvind Kumar Sahu, a computer science engineer who enjoys building reliable backend systems and integration platforms that solve real business problems. From designing event-driven microservices and optimizing database performance to creating secure payment and KYC workflows, I focus on performance, scalability, and operational excellence. I’ve worked across multiple domains—enterprise SaaS integrations, fintech-style loan/credit card and payment gateways, and e-commerce logistics—using tools like Go, Gin, gRPC, Node.js/NestJS, PostgreSQL/MySQL, Redis, and AWS. I like turning complex requirements into clean APIs, robust pipelines, and measurable improvements such as lower latency, higher throughput, and better onboarding automation.…

Arvind Kumar Sahu

I’m Arvind Kumar Sahu, a computer science engineer who enjoys building reliable backend systems and integration platforms that solve real business problems. From designing event-driven microservices and optimizing database performance to creating secure payment and KYC workflows, I focus on performance, scalability, and operational excellence. I’ve worked across multiple domains—enterprise SaaS integrations, fintech-style loan/credit card and payment gateways, and e-commerce logistics—using tools like Go, Gin, gRPC, Node.js/NestJS, PostgreSQL/MySQL, Redis, and AWS. I like turning complex requirements into clean APIs, robust pipelines, and measurable improvements such as lower latency, higher throughput, and better onboarding automation.…

Available to hire

I’m Arvind Kumar Sahu, a computer science engineer who enjoys building reliable backend systems and integration platforms that solve real business problems. From designing event-driven microservices and optimizing database performance to creating secure payment and KYC workflows, I focus on performance, scalability, and operational excellence.

I’ve worked across multiple domains—enterprise SaaS integrations, fintech-style loan/credit card and payment gateways, and e-commerce logistics—using tools like Go, Gin, gRPC, Node.js/NestJS, PostgreSQL/MySQL, Redis, and AWS. I like turning complex requirements into clean APIs, robust pipelines, and measurable improvements such as lower latency, higher throughput, and better onboarding automation.

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Skills

Experience Level

Golang
Expert
JavaScript
Expert
MySQL
Expert
Node.js
Expert
PostgreSQL
Expert
Redis
Expert
Docker
Expert
AWS
Expert
Python
Expert
API
Expert
DynamoDB
Expert
MongoDB
Expert
Kubernetes
Expert
CSS
Expert
Django
Intermediate
Elasticsearch
Intermediate
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Language

English
Fluent

Work Experience

Member of Technical Staff - 2 at Aquera Labs
August 1, 2024 - April 30, 2026
Designed, developed, and optimized 20+ enterprise SaaS connectors and integration pipelines for Workday, ADP, Paylocity, Dayforce, and Zoho. Improved HR-to-IT onboarding automation efficiency by 70% using scalable workflow orchestration, asynchronous processing, and event-driven backend services. Enhanced platform reliability and performance by implementing Redis caching, distributed task queues, DynamoDB optimizations, and fault-tolerant microservice patterns; built and operated REST API-based integrations in a microservices architecture.
Associate Software Engineer-2 at Tilli Software
August 1, 2024 - August 10, 2025
Worked on Monay, a B2B and B2C global payment gateway handling payment links, refunds, access control (RBAC), and Beacon, a B2B invoice processing platform integrated with ERP and BBPS. Utilized Python, FastAPI, Next.js, JavaScript/TypeScript, ExpressJS, Swagger, MySQL, and AWS.
MTS-2 at Aquera Labs
August 1, 2024 - Present
Currently working on connector building for Identity Integration Platform as a Service, integrating various HR and IGA systems, and automating access. Technologies used include AWS Lambda, NestJS, Node.js, AWS CloudWatch and integration with multiple HR and PaaS applications such as Workday and Dayforce.
Associate Software Engineer-2 at Tilli Software
January 1, 2023 - August 1, 2024
Engineered a high-scale Loan & Credit Card platform covering KYC verification, loan disbursement, credit card offers, transaction processing, statement generation, repayment workflows, and end-to-end lifecycle management. Built Monay, a global B2B2C payment gateway with secure payment processing, RBAC, merchant/admin workflows, and real-time analytics dashboards. Developed Beacon for B2B invoice processing and payment integrated with ERP and BBPS for automated billing and reconciliation workflows. Optimized Node.js/NestJS microservices using MySQL query tuning and schema normalization, Redis caching, and BullMQ-based async processing to reduce API latency by 40% and improve statement generation under high transaction loads.
Software Developer at SarvM.Ai
January 1, 2023 - August 10, 2025
Developed 'sarvm', an e-commerce platform for vegetable, food, and grocery delivery focusing on local markets. Built retailer, delivery, and customer apps using Python, Django, JavaScript, Angular, MongoDB, PostgreSQL, AWS and microservices architecture.
Software Developer at EWNS
May 1, 2021 - January 1, 2023
Developed Sarvm, a hyper-local e-commerce platform supporting grocery and food delivery operations across multiple cities. Built retailer, delivery partner, and customer-facing applications for real-time order placement, tracking, and fulfillment workflows using Node.js/JavaScript/TypeScript, PostgreSQL, MongoDB, and AWS S3. Improved monitoring and infrastructure visibility with AWS CloudWatch, S3, EC2, and a microservices-based deployment architecture using containerized/cloud-native practices.

Education

B.Tech in Computer Science and Engineering at Indian Institute of Information Technology(IIIT), Nagpur
January 1, 2017 - January 1, 2021
Intermediate at RSSL College Aunsi, Bis
January 1, 2014 - January 1, 2016
High School at R M L High School, Loma
January 1, 2012 - January 1, 2014
B.Tech in Computer Science and Engineering at IIIT Nagpur
January 1, 2017 - January 1, 2021
High School (R M L High School, Loma) at R M L High School, Loma (State Board BSEB)
January 1, 2012 - January 1, 2014
Intermediate (RSSL College Aunsi, Bis) at RSSL College Aunsi, Bis (State Board BSEB)
January 1, 2014 - January 1, 2016

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Retail, Financial Services, Computers & Electronics
    Custom website development with ewns.in

    What EWNS.in Appears To Be

    EWNS is described as a custom e-commerce platform designed to address various digital commerce needs.

    It offers features to enable social commerce and e-commerce within minutes, and allows users to create and manage websites from any device, for seamless digital shopping experiences.