Languages, frameworks and tools I use to build production systems.
A sample of what I've shipped recently.
Led the cross-organizational launch of a net-new QR-code payment solution for AWS Brazil, managing engineering efforts across 20+ AWS, Amazon, and external teams, delivering the platform's first payment solution in four years.
Established and scaled a 20+ person multi-disciplinary mobile engineering organization (iOS, Android, SDET) for Grab's Super App marketing, directly impacting 36 million Monthly Active Users. Defined technical strategy, coding standards, CI pipelines, and scalable team processes.
Owned the Amazon mobile shopping beta app and the resiliency program, working with 400+ partner teams to ensure high availability and user experience for a critical e-commerce platform.
A timeline of where I've worked and what I shipped.
Defined long-term technical strategies aligned with Amazon-wide goals. Led distributed systems and mobile teams with end-to-end ownership for product lifecycle. Led the cross-organizational launch of the PIX payment method for AWS Brazil, managing engineering efforts across 20+ AWS, Amazon, and external teams to deliver the platform's first QR-code and net-new payment solution in four years. Worked with 400+ partner teams, owning the Amazon mobile shopping beta app and the resiliency program. Led a diverse team of 16, including leaders, SDEs, TPMs, QAs, and SDETs. Scaled engineering processes and reduced the operation cost by 75% in just 1 year by strategic planning and prioritizing use of AI.
Established and scaled a 20+ person multi-disciplinary mobile engineering organization (iOS, Android, SDET) dedicated to Grab's Super App marketing, directly impacting 36 million Monthly Active Users. Spearheaded the formation of the team, defining technical strategy, establishing robust coding standards, CI pipelines, and scalable team processes to ensure long-term engineering velocity and quality. Cultivated high-performance talent, actively mentoring engineers into leadership roles, resulting in measurable improvements in team productivity, morale, and organizational maturity.
Contributed to BBM's messaging platform, impacting 100M+ installs. Delivered new features and code improvements using TDD and pair programming.
Built scalable video playback systems for iOS/Apple TV. Led iOS app architecture and collaborated cross-functionally on product delivery.
One of the first 3 engineers who started developing the iOS driver app for Grab; later, 300+ engineers contributed to that app. Delivered multiple features for Grab Driver app and set up the early payment method integration. Led UX improvements and implemented event tracking.
Built apps and frameworks including PDF editor, eBook reader, and telematics systems.
Rohan Chalana is an accomplished Engineering Leader with over 11 years of experience in delivering complex, distributed systems and high-scale mobile applications. He has a proven track record of leading high-performing teams across major tech companies like Amazon and Grab, taking full ownership of product lifecycles, strategic roadmaps, and execution for products serving millions of users globally. His core expertise lies in scalable architecture, team building, agile execution, and proactive stakeholder engagement.
Throughout his career, Rohan has demonstrated significant impact, from spearheading the launch of the PIX payment method for AWS Brazil and scaling engineering processes to reduce operational costs by 75% using AI, to building and scaling a 20-person mobile engineering organization at Grab that impacted 36 million Monthly Active Users. He is adept at defining long-term technical strategies, fostering high-performance talent, and implementing robust CI/CD pipelines and coding standards, ensuring both velocity and quality in engineering outputs.
Passionate about growing other leaders, Rohan is also a Certified Workplace Coach, dedicated to mentoring engineers and cultivating organizational maturity. He thrives in dynamic environments where he can apply his deep technical acumen in iOS, Android, and distributed systems, coupled with his strong leadership capabilities, to drive innovation, operational excellence, and significant business outcomes.
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