ShubhamKumar

Senior Engineer II

Senior Engineer II with 8+ years of experience building scalable, high-availability backend systems across fintech and aviation domains. Specialized in cloud-native architecture, distributed systems, and microservices using Node.js, TypeScript, Haskell, and PureScript. Proven track record of optimizing system performance, reducing latency by up to 90%, and architecting mission-critical infrastructure serving millions of users.

Resume
Shubham Kumar

8+ years

in production

Point of view

What I optimize for

The through-line is simple: make complex systems easier to operate.

8+

01

years in production

backend systems since 2018

90%

02

latency removed

Juspay payout processing

75%+

03

launch success

AirFi captive portals

The through-line

Make the system legible.

Senior Engineer II My work spans the systems behind fast payments and in-flight connectivity, where latency, availability, and failure behavior matter more than novelty.

Contact details

Location

Bengaluru, Karnataka, India

Birthday

Aug 15, 1993

Work History

A record of production work

Senior Engineer II

2026 - PresentHybridBengaluru
  • Built an LLM evaluation and prompt-management platform with versioned prompt promotion, automated quality scoring, provider-agnostic AI integrations, async job processing, and PII-redacted observability—adding pre-release output gates and end-to-end incident visibility.
  • Hardened secrets management across 5+ backend microservices by separating credentials into a dedicated secrets manager and general configuration into a parameter store; completed the zero-downtime migration and reduced the impact scope of credential-store misconfiguration or exposure.

Associate Lead Engineer

2025 - 2026RemoteConsultant
  • Architected mission-critical LEO (Low Earth Orbit) connectivity system, collaborating across cross-functional teams to design scalable architecture enabling real-time, high-speed in-flight internet
  • Spearheaded "Next Gen" hardware bring-up, modernizing software stack while preserving core system philosophies to ensure backward compatibility and future-proof performance

Senior Software Engineer

2021 - 2025Remote
  • Engineered high-availability backend services using Node.js and TypeScript, increasing captive portal launch success rates from 50% to over 75% for global airline passengers
  • Optimized ADS-B event communication and satellite email accessibility, ensuring reliable data synchronization for offline-first embedded systems in low-connectivity environments
  • Architected versatile remote sync service that streamlined content distribution across diverse aircraft platforms, significantly reducing manual deployment overhead
  • Enhanced offline payment applications by integrating online verification capabilities when internet connectivity is available
  • Improved email accessibility via satellite, playing pivotal role in project success

Software Developer

2018 - 2021Bengaluru
  • Revamped CRED payment backend using PureScript and Haskell, achieving 90% reduction in payout latency by slashing processing time from 60 seconds to 6 seconds
  • Enabled seamless credit card transactions by refactoring transaction flows and reducing processing time at all stages
  • Implemented generic fulfillment system for various financial operations, ensuring streamlined and efficient processing
  • Integrated complex multi-bank payout providers and Bill Payment services (HP Gas) for GooglePay, enabling seamless transaction flows for millions of active users

Tooling

The stack behind the work

The languages, frameworks, and platforms I reach for when the system has to hold.

Working together

The work I take on

Architecture, code review, and performance work for teams shipping critical paths.

Software System Design & Optimization

01

Experienced in building and improving complex software systems to enhance performance and reliability.

Start with the bottleneck

Payment Systems & Fintech Solutions

02

Skilled in developing fast, secure payment backends and integrating with banks and payment providers.

Side Projects & Open Source

03

Creator of various tech tools and bots, contributing to open-source and automation projects.

Social proof

Notes from the work

A few words from people who have seen the systems up close.

Selected note

I had the privilege of working with Shubham during our time at AirFi, and I can confidently say he is one of those rare professionals who consistently uplifts the entire team. Whenever support was needed, he was always the first to step in - dependable, proactive, and genuinely invested in team success. What sets him apart is his inquisitive nature and constant drive for new challenges. For him, routine is never enough; he thrives in dynamic environments where he can explore, learn, and contribute beyond expectations. This is evident in his strong and versatile technical skill set, which spans a vast subset. He has a natural ability to quickly grasp new technologies and apply them effectively, often becoming the go-to person for guidance. Beyond his technical acumen, Shubham embodies the qualities of a true team player. He brings enthusiasm, positivity, and humility to every interaction. Whether it’s high-level design work or routine tasks, he never says no and gives his best with the same zeal. His willingness to handle even the so-called 'grunt work' reflects not only his dedication but also his understanding of what it takes to deliver as a team. In addition, he demonstrates strong problem-solving skills, excellent collaboration, and adaptability under pressure. He is dependable, detail-oriented, and has the rare quality of combining technical brilliance with a people-first mindset. Any team would be fortunate to have him - not just as a developer, but as someone who can help build a positive, collaborative, and high-performance culture. I wholeheartedly recommend Shubham and am confident that he will excel in any role or challenge he chooses to take on.
Yash Anand

Director of Technology · Sep 2025

More notes

Credentials

A few credentials

Formal training that supports the practical work.

Start a conversation

Have a hard system problem?

Start with the bottleneck, the trade-off, or the idea you want to pressure-test.

Direct channels

Location

Bengaluru, Karnataka, India

Birthday

Aug 15, 1993

Open to focused collaborations

Bring the bottleneck.

As a seasoned software engineer, I excel in optimizing intricate systems, transforming payment applications, and elevating user experiences with inventive solutions. Let's collaborate to drive your projects forward.

Send an email