Aug 2020 – Jan 2025 · 4 yrs 5 mos

• Hacker at Apple Pay, focusing on architecting high-scale, low-latency systems to enhance the Apple Pay platform, specializing in unique transit use-case evaluation and implementation.
• Conducted meticulous crafting of user experience workflows tailored to regional demands, involving a complex matrix of technical solutions to optimize performance and user experience.
• Oversaw rigorous scalability testing to ensure reliability and the development of a comprehensive suite of APIs for future partners, aiming to set a new precedent for Apple Pay's evolution.
• Delved into the complexities of Truth on Card systems across EMEIA, working with proprietary applet specifications like Mifare DESFire, Calypso, and Account-Based EMV schemes, to ensure consistency in platform analysis. Co-Architect for IDFM Navigo on iPhone.
• Advocated for a unified interface of capability sharing through extensive research on complex specifications' intersection with urban and national transit systems, significantly contributing to the transformation of digital payments integration and experience.

Dec 2018 – Nov 2020 · 1 yr 11 mos

• Led the development of one of the world’s most scalable, reliable, resilient, and available platforms at Apple Cloud Platform, focusing on delivering services that exceed customer expectations through innovative use of Remote Execution via Bazel and BuildBarn.
• Implemented a segmented and access-managed Storage Blob system, enhancing data security and efficiency, pivotal in managing vast data volumes with strict access control in a data-centric world.
• Championed a polyglot approach to software development, leveraging diverse programming languages to foster an environment of learning and innovation, achieving complex goals with minimal reliance on caffeine, showcasing the team's efficiency and enthusiasm.
• Focused on meticulous design and architecture planning, creating robust and forward-thinking systems that anticipate and adapt to future technological advancements and challenges.
• Adhered to the mantra 'Where there is Bazel, there is determinism,' emphasizing the importance of deterministic build environments for consistent and reliable software outputs, setting new industry standards in software build and deployment processes.

Nov 2016 – Dec 2018 · 2 yrs 1 mo

• Delved into compiler technologies, especially clang/g++, analyzing their performance and interaction with Operating Systems to optimize system efficiency.
• Conducted in-depth debugging and analysis of ELF vs. Mach-o linking patterns, customizing section selections to boost linking efficiency and overall system performance.
• Advocated for build reproducibility and deterministic systems, leading the adoption of design patterns aimed at efficient compilation units and managing large-scale C++ compilations (including PCH, Unity Builds, and Template Compilation Models), significantly reducing compile-time and enhancing reliability.
• Championed distributed and cached solutions to improve build systems, while also addressing the challenges and limitations of NFS implementations with practical solutions.
• Developed utility applications like chatbots and SDKs, promoting an innovative environment, and was a fervent supporter of continuous integration, driving development process improvements.

Oct 2015 – Nov 2016 · 1 yr 1 mo · Tokyo, Japan

• Worked directly with Listed Sales & Trading desks on the cash equities and listed derivatives side, owning end-to-end delivery of front-to-back trading workflows.
• Designed and built low-latency trading and post-trade systems supporting cash equities, ETFs, equity futures, and listed options on Japanese and regional exchanges (TSE, OSE, SGX).
• Implemented trade lifecycle flows covering order capture, smart routing, exchange connectivity, allocations, confirmations, and regulatory reporting.
• Partnered closely with sales traders and middle office to translate market microstructure and desk workflows into robust, production-grade systems.
• Handled market-specific nuances such as auction phases, tick size regimes, corporate actions, and exchange trading halts.
• Built and maintained services primarily in C++/Go, with a strong focus on performance, resiliency, and operational transparency in a live trading environment.
• Played a key role in incident response and desk support during volatile market conditions, ensuring minimal trading disruption.
• Instruments: Cash equities, ETFs, equity futures, listed options
• Focus: Front-office trading workflows, exchange integration, latency-sensitive systems

Jun 2014 – Sep 2015 · 1 yr 3 mos · Tokyo, Japan

• Fixed Income - Rates.
• Led development for the Fixed Income Rates technology stack, supporting some of the most complex interest-rate products traded in Japan and globally.
• Owned systems supporting Japanese Government Bonds (JGBs) across cash, repo, and curve trading.
• Built pricing, risk, and trade processing components for interest rate swaps (IRS), OIS, basis swaps, FRAs, and structured rate products.
• Worked closely with rates traders, quants, and risk teams to implement curve construction, discounting frameworks, and scenario risk (DV01, PV01, sensitivities).
• Supported both high-touch voice trading and electronic trading workflows, including RFQ platforms and dealer-to-client flows.
• Instruments: JGBs, repos, IRS, OIS, basis swaps, structured rate products
• Focus: Rates pricing, risk, and front-office trade lifecycle systems

Jan 2014 – Sep 2018 · 4 yrs 8 mos · Tokyo, Japan

• The world's most scaleable conference mixer. Containerised, Secure, Cross Cloud, Unlimited Scale.

Sep 2011 – Apr 2014 · 2 yrs 7 mos · Tokyo, Japan

• Led the development and support of an Adaptive Trading Platform, a voice trading and trade capture platform.
• Innovated with customized SIP solutions, leveraging AWS API for proof of concept.
• Played a pivotal role in the merger with Telstra's Telecom arm, leading to the creation of Enepath, and facilitated crucial technology transfers.

Aug 2010 – Sep 2011 · 1 yr 1 mo · Hyderabad Area, India

• Web Systems Engineer for Middleware Design and Engineering Team.
• Developed a platform for middleware automation and deployment to facilitate a generic interface for app-server changes to be rolled out in production without manual intervention. The effort reduced the delivery time on each change by almost 80%.

Jan 2010 – Jun 2010 · 5 mos · New Delhi Area, India

• Core C++ Programming in Embedded Systems