Arjun Singh
Gurugram
Summary
Engineering professional with nine years of experience as a hands-on individual contributor and team lead, mentoring five to six engineers. Strong expertise in designing scalable, secure systems, and delivering high-impact projects through solid architecture and execution.
Overview
10
10
years of professional experience
Work History
Technical Lead
Linemate Pte. Ltd
Gurugram
07.2025 - Current
- Streamlined a multi-tenant user service, ensuring strong data isolation, security, and performance across tenants at scale.
- Designed and implemented a hierarchical access and relationship model from scratch using Neo4j, enabling efficient traversal and role-based access control for complex enterprise use cases.
- Built and scaled core engagement modules, including Campaigns, Forms, and Surveys, supporting high-volume enterprise workflows.
- Integrated Meta (WhatsApp) APIs and Fyno to power WhatsApp-based campaigns, user journeys, and interactive forms, ensuring reliable and high-throughput message delivery.
- Implemented folder-based organization in the content library, improving content discoverability, access control, and lifecycle management.
- Integrated Sentry across backend and frontend systems, significantly improving error observability, faster incident detection, and production stability.
- Implemented BullMQ for asynchronous processing, enabling scalable background workflows, improving system resilience, and reducing request latency.
- Contributed as a hands-on individual contributor while leading and mentoring the engineering team, driving design reviews, code quality, and end-to-end delivery ownership.
Technical Lead
Otipy
Gurugram
01.2020 - 04.2025
- Led team of 4 engineers to enhance backend architecture and code quality across critical services.
- Built and scaled backend platform from inception, supporting consumer app, partner app, warehouse management, and customer support.
- Managed core domains including Subscriptions, Payments, Wallets, Checkout, Consumer Onboarding, Referrals, Campaigns, and User Segmentation.
- Designed real-time user segmentation system utilizing 100+ attributes with ~10ms latency, driving 20% growth in daily orders and 15% increase in AOV.
- Architected subscription system with daily, alternate, and custom plans, accounting for ~40% of daily orders.
- Integrated payment gateways (Paytm, Razorpay) and YES BANK payouts to facilitate secure transactions and efficient partner settlements.
- Directed AWS to GCP migration with zero downtime while optimizing cloud costs.
- Developed systems capable of processing over 1,000 orders per minute during peak traffic with high reliability.
- Collaborated with stakeholders to gather requirements and define project scope.
- Conducted code reviews to ensure quality and adherence to best practices.
Software Engineer
Crofarm
Gurugram
09.2018 - 12.2019
- Implemented dynamic pricing strategies for retailers, enabling real-time adjustments based on market conditions and optimizing revenue.
- Designed and deployed a Business Associates hierarchy system, enabling managers to track and evaluate the performance of their team members with enhanced visibility and control.
- Developed a Business Associate bonus points scheme, awarding or deducting points based on product pricing, to incentivize and drive effective pricing strategies.
- Designed and implemented comprehensive incentive schemes for Business Associates, aimed at enhancing performance, aligning with business goals, and driving measurable results.
Software Developer
Uniplatform Tech Pvt. Ltd
Noida
07.2016 - 08.2018
- Scraped and consolidated data from 15+ real estate portals, including Magicbricks, 99acres, OLX, and Quikr, to enable in-depth market analysis and generate actionable insights.
- Developed and implemented an automated solution for posting ads across various real estate websites, significantly improving efficiency for real estate brokers.
- Integrated frontend modules for ad posting on the website using AngularJS, improving functionality and user experience for streamlined ad management.
Education
B.Tech - IT
Indian Institute of Information Technology
Allahabad01-2016
Skills
- System design and architecture: scalable, high-availability systems, microservices, and monolithic architectures
- Programming languages: Python, JavaScript, TypeScript
- Backend frameworks: Django, FastAPI, Expressjs (Nodejs)
- Databases and caching: MySQL, PostgreSQL, MongoDB, Redis, Neo4j
- Messaging and async processing: Kafka, AWS SQS, Celery, BullMQ
- Observability & logging: ELK stack (Elasticsearch, Logstash, Kibana)
- Cloud platforms: AWS, Google Cloud Platform (GCP)
- Leadership: technical leadership, mentoring, code reviews
Timeline
Technical Lead
Linemate Pte. Ltd
07.2025 - Current
Technical Lead
Otipy
01.2020 - 04.2025
Software Engineer
Crofarm
09.2018 - 12.2019
Software Developer
Uniplatform Tech Pvt. Ltd
07.2016 - 08.2018
B.Tech - IT
Indian Institute of Information Technology