About OnlineSales.ai

Built by ex-Amazon ad-tech experts, OnlineSales.ai offers a future-proof Retail Media Operating System - boosting Retailer’s profitability by 7% of Sales! We are an Enterprise B2B SaaS startup, based out of Pune India. With OnlineSales.ai's platform, Retailers activate and delight 10x more Brands by offering an omni-channel media buying experience, advanced targeting, analytics & 2x better ROAS. Tier 1 Retailers and Marketplaces globally are accelerating their Monetization strategy with OnlineSales.ai and are innovating ahead of the market by at least 2 years.

About the role
To be a Senior Staff Engineer at OnlineSales.ai, you need to be a systems thinker, a hands-on technologist, and a technical leader. You’re someone who thrives on solving complex architectural challenges at scale and mentoring other engineers to do the same. You will drive critical technical decisions, influence long-term platform strategy, and ensure our systems are built for performance, scalability, and resilience. You will work closely with Engineering Leads, Product Managers, and Founders to shape the technology roadmap of OnlineSales.ai.

What will you do @ OnlineSales.ai?

Own and drive the technical vision, architecture, and execution strategy for large, complex systems across multiple engineering pods

Lead design and implementation of scalable, fault-tolerant systems that handle billions of data points and real-time decisioning

Partner with Product, Design, and Data teams to deliver end-to-end solutions that are elegant, practical, and impactful

Write high-quality, performant, and testable code across services in Java, Python, Node.js, or equivalent modern stacks

Review designs, code, and architecture with a sharp eye on security, scalability, and reliability

Mentor senior engineers, influence engineering practices, and help define engineering standards

Debug and root cause production issues across multiple layers of the stack

Drive adoption of modern development practices — CI/CD, observability, containerization, and DevOps excellence

Be a culture carrier who leads from the front and builds a strong engineering culture around quality, ownership, and innovation

You will be a great fit, if you have:

7-10 years of experience designing and building large-scale, distributed software systems in production

Deep knowledge of system design, microservices architecture, cloud infrastructure (AWS/GCP), and container orchestration (Kubernetes, Docker)

Strong experience with high-performance databases, distributed caching, messaging systems (Kafka, RabbitMQ), and big data pipelines

Proven experience leading engineering initiatives and working with cross-functional teams in fast-paced environments

Mastery of at least one or more modern programming languages — Java, Python, Go, Node.js, etc.

Strong product sense — ability to balance short-term execution with long-term architecture and scalability

Experience mentoring engineers, conducting technical interviews, and scaling engineering orgs

A Bachelor's/Master's degree in Computer Science or related technical field

Why Online Sales.ai?
Startup-y. We believe Startup is a mindset. It’s about being scrappy, being nimble, solving tough problems with constrained resources, and more. It’s about working hard and playing hard
Enterprise SaaS. Opportunity to work with an Enterprise Product SaaS firm with aspirations of growing 10x across the globe
AI-led Retail Tech. We are working to digitize & democratize one of the most exciting and growing verticals - Retail Tech leveraging data, machine learning, and automation (culmination of ad-tech, mar-tech, and analytics for Retail vertical)
Meaningful work. This is not just a job. You can find a job anywhere. This is a place for the bold to get paid who make a real impact on business
No red tape. Say goodbye to pointless meetings or political hoops to jump through. We’re scrappy, believe in autonomy and empower our teams to do whatever it takes to do the unthinkable
Problem Solving. We ignite the best in you. We exist not only to deliver meaningful innovation but to ignite and inspire the creative problem-solver in you
Quirky & fun. Enjoy new skills and hobbies like being a quiz master, playing board games, trying your hands on percussion, playing Djembe, and spreading love within the org!

Submit Your Application

Apply With Resume *

First Name*

Middle Name

Last Name*

Email*

Mobile*

Gender*

Where are you currently based?*

We practice WFO as standard, will that work for you?*

Are you referred by one of us @Onlinesales ? If yes, please mention their full name here*

Education

Bachelors Degree*

Masters Degree (if any)

Specialization*

Year of Passing - Bachelors*

Year of Passing - Masters

Experience

Total Experience*

Notice Period in days*

Current Total Gross CTC (in lakhs per annum)*

Current Fixed Gross (in lakhs per annum)*

Self Assessment

Please answer these simple questions which will help us leapfrog the entire fitment evaluation process.

Please describe the most complex architectural challenge you’ve solved, including trade-offs and impact.*

How would you rate your system design skills at scale?*

How would you rate your ability to lead complex technical initiatives across teams?*

How comfortable are you with production architecture reviews and making long-term architectural decisions?*

How would you rate your technical breadth across backend, cloud infrastructure, data systems, and developer tooling?*

Sr. Staff Software Engineer

Submit Your Application