News Archives - Mercari India

August 19, 2025

Migrating Coupons from Monolith to Microservice

Our JourneyBackground: The Heart of Our Platform Coupons are central to our platform, driving user engagement and retention through credit points and discounts. Historically, this critical system resided within our extensive PHP monolith, deeply integrated with almost all major modules like accounting, payment processing, checkout, listings, and item management. While this architecture initially facilitated rapid iteration, its limitations became apparent as our product and team grew. Why We Decided to Migrate The coupon domain’s deep entanglement with critical modules increasingly hampered agility and introduced operational risks. As some parts of our system transitioned to microservices while others remained in the monolith, complexity mounted. Our key motivations for this migration included: Technical Debt: The monolith’s increasing complexity hindered development and heightened regression risks. Scalability: Coupon processing needed to accommodate a growing user base and higher loads. Reliability and Ownership: We needed clearer data ownership boundaries and a straightforward path for performance optimization. What This Blog Post Covers In this post, I will detail the approach we adopted for migrating our coupon system to a robust, scalable microservice, including our methodology, the challenges we encountered, and the lessons we learned.The Challenges Migrating a critical domain like coupons involves more than just moving code. Here’s what made this journey particularly complex: Tight Coupling: The coupon domain’s pervasive connections to accounting, payments, listing, and item screens meant that moving one piece affected many others. Always-On Expectations: Our services needed to remain continuously available without significant downtime or interruptions. Data Consistency: The migration demanded meticulous management to prevent any coupon, transaction, or reward notification from being missed. Scalability: The new architecture had to match or surpass the original system’s scale. Performance: Achieving the monolith’s native speed despite additional network hops was a significant hurdle. Unclear Ownership: Ambiguities regarding endpoint and database ownership required resolution before… <a class="more-link" href="https://about.in.mercari.com/news/mercari-india/migrating-coupons-from-monolith-to-microservice/">Continue reading Migrating Coupons from Monolith to Microservice</a>

July 9, 2025

Inside The Live2Test 2025: The Premier Online Conference for Software Testing – Udit Gattani

The Live2Test 2025 tech panel explored the rapidly evolving technological landscape of software testing, focusing on the influence of Artificial Intelligence and other breakthrough technologies. The conversation delved into the transformation of traditional testing workflows, the rise of AI-augmented approaches, and the crucial role testers must play in navigating changes across the industry. Amidst the excitement about cutting-edge tools like ChatGPT and blockchain, the panel delivered an honest message: Testers who fail to adapt and embrace these innovations will risk falling behind. More than ever, testers are expected to graduate from repetitive tasks to high-level problem-solving, risk assessment, and strategic thinking. Key Takeaways 1. The Tester’s Role is Transforming The iconic manual tester role is rapidly becoming outdated. While this doesn’t mean testers are being replaced, their roles are undeniably evolving. Testers must now think beyond execution and focus on bigger-picture responsibilities, such as risk profiling, evaluating AI model behavior, and designing prompts for AI systems. These emergent skills are what will define the future of testing, leaving behind the “button-clicker” mindset of the past. 2. AI is Just a Tool, Not a Cure-All AI’s ability to accelerate and automate aspects of testing is undeniable, but it’s neither magic nor a one-size-fits-all solution. Tools like ChatGPT, AI-based test case generators, and coding copilots are only as effective as the humans directing them. Over-reliance on these tools—without proper judgment—can result in flawed test cases, defective releases, and even security risks. 3. Upskilling in AI is Non-Negotiable As AI becomes a critical part of software development and testing cycles, training in AI concepts is no longer a “nice-to-have.” Organizations must empower their teams with skills in AI fundamentals, risk detection, prompt engineering, and ethical usage guidelines to keep pace with industry demands. A highly trained, AI-capable team will also help ensure that… <a class="more-link" href="https://about.in.mercari.com/news/mercari-india/inside-the-live2test-2025-the-premier-online-conference-for-software-testing-udit-gattani/">Continue reading Inside The Live2Test 2025: The Premier Online Conference for Software Testing – Udit Gattani</a>

July 3, 2025

A Day of Purpose: A Heartfelt CSR Visit by Mercari India

There are experiences that go beyond words, quietly humbling, deeply moving, and filled with perspective. Our recent visit to Thayi Mane- Children’s home in Bangalore, was one such moment for the Mercari India team. Thayi Mane provides a nurturing environment for children who are either orphaned or come from families unable to support them. The home not only takes care of their education but also focuses on their discipline, values, and emotional well-being. It is a space built on structure, compassion, and hope. Our visit began post-school hours, as we waited for the children to return from their classes around 3:30 PM. The visit was centered around spending quality time with the children and engaging them in a creative activity. We distributed drawing charts, sketch pens, and colours, encouraging each child to express their imagination freely. What followed was a vibrant, uninhibited display of creativity that gave us a glimpse into their unique thoughts and dreams. As the activity came to an end, we gathered for evening snacks, which were sponsored by Mercari India. Sitting together in a shared space, we exchanged stories, smiles, and conversations that reminded us how powerful simple moments can be. This visit was a heartfelt reminder that real impact doesn’t always come from grand gestures, but from showing up with sincerity and being present. Spending time with the children at Thayi Mane left a lasting impression on all of us, and reinforced our commitment to building meaningful connections with the community around us. -Smriti Singhal Stay tuned for more stories, lessons, and reflections as we continue to learn and grow together. Follow us on LinkedIn Twitter Facebook Instagram Youtube

July 1, 2025

Learning, Networking, and Showcasing at Kubernetes Community Days Bengaluru 2025

On June 7, 2025, Bengaluru played host to one of the most exciting events of the year for anyone passionate about Kubernetes and cloud-native technologies—Kubernetes Community Days Bengaluru 2025 (KCD Bengaluru 2025). Held at the Radisson Blu, Outer Ring Road, the event brought together a diverse mix of developers, DevOps engineers, cloud architects, and open-source contributors. It was a day filled with insightful sessions, inspiring keynotes, and the opportunity to connect with the vibrant Kubernetes community. For me and my colleagues from TnS India, attending KCD Bengaluru 2025 was an unforgettable experience. We were thrilled to immerse ourselves in a day dedicated to learning more about Kubernetes best practices, tools, innovations, and the challenges being tackled by the global cloud-native community. The event not only helped us deepen our understanding of Kubernetes but also gave us the chance to share Mercari’s journey and connect with professionals who are just as excited about cloud-native technology as we are. Kickoff With Inspiring Keynotes The event opened with a warm welcome from Humble Devassy Chirammal, Principal Engineer at VMware and a well-known Kubernetes maintainer. His emphasis on building a collaborative and innovative Kubernetes community set the tone for what turned out to be a truly engaging and thoughtful day. The keynote sessions were some of my favorite moments of the event. Each one highlighted the progress Kubernetes has made so far while giving a glimpse into its future. A few keynotes that stood out: ● Daniel Krook from CNCF shared a deep dive into the evolution of Kubernetes in 10 Years of CNCF and Cloud Native’s Next Decade. His stories about challenges and growth within the community were insightful and relatable. ● Ashish Hanwadikar from Kloudfuse brought observability front and center in his talk, From Prompt to Pod: Observability Across the AI… <a class="more-link" href="https://about.in.mercari.com/news/mercari-india/learning-networking-and-showcasing-at-kubernetes-community-days-bengaluru-2025/">Continue reading Learning, Networking, and Showcasing at Kubernetes Community Days Bengaluru 2025</a>

June 19, 2025

Inside the FIDO Alliance Meetup: 100+ Experts, 50+ Orgs, and Mercari on the Panel, Rooparsh

Event Name: FIDO Alliance India Working Group (FIWG) Member Meetup and Workshop Attendee: Over 100 participants representing 50+ organizations, hosted at the Google Ananta office in Bengaluru. On Friday, 6 June 2025, I had the privilege of attending the FIDO India Working Group (FIWG) meetup as a panelist representing Mercari. The event brought together pioneers, thought leaders, and technologists to discuss the progress and future of FIDO-based authentication. Hosted at the Google Ananta office, the event wasn’t just an exchange of technical insights but also a collaborative space to ideate a passwordless future. The discussions centered around the challenges of traditional authentication mechanisms involving passwords and OTPs and how FIDO’s innovative framework can streamline authentication while bolstering security. The event saw impressive contributions from companies like Google, Zoho, Times Internet, Mastercard, and VinCSS, further showcasing how FIDO standards are being applied to a wide array of industries, including IoT.With over 100 participants from 50+ organizations, the energy was palpable, enhanced by Google’s cutting-edge venue and delightful food. Key Takeaways: Transitioning to Passkeys: Times Internet shared their hands-on journey of migrating from passwords to passkeys, highlighting technical obstacles as well as their solutions to make user adoption seamless. Hearing about their significant improvements in both user experience and security was an important learning experience for all. Zoho’s Impactful Solutions: Zoho presented their FIDO-compliant solutions, which are aiding numerous IT companies in enhancing authentication experiences. Their insights showcased how FIDO standards can deliver both security and usability in enterprise settings. Mastercard & RBI Collaboration: Mastercard unveiled their ambitious plans to roll out passkey authentication solutions in partnership with the Reserve Bank of India (RBI). The room was buzzing with excitement over how these upcoming changes could transform authentication systems in India, particularly in the financial sector. IoT with Passkeys (VinCSS): A standout… <a class="more-link" href="https://about.in.mercari.com/uncategorized/inside-the-fido-alliance-meetup-100-experts-50-orgs-and-mercari-on-the-panel-rooparsh/">Continue reading Inside the FIDO Alliance Meetup: 100+ Experts, 50+ Orgs, and Mercari on the Panel, Rooparsh</a>

June 17, 2025

Two Sides of the Desk: An Intern-Mentor Journey ft. Smriti and Jesuine at Mercari India

Welcome to Two Sides of the Desk, a blog series where we share the unique experiences, challenges, and triumphs of interns and their mentors. This blog explores the dynamic relationship between mentor and mentee, offering insights from both sides of the desk. Whether you’re a seasoned mentor, a budding intern, or simply curious about the mentorship journey, our stories and reflections aim to inspire, educate, and foster a deeper understanding of this transformative partnership. Mentor: Smriti Singhal Designation: HR- Mercari India How do you approach balancing guidance and autonomy for your interns to ensure they’re both learning and contributing meaningfully to projects? My approach has always been to create a balance between structure and space. I made sure she had clarity on expectations, but I didn’t micromanage. I allowed her to explore, make mistakes, and come back with questions even if it was the same question twice. I believe real learning happens when someone feels safe enough to try, fail, and ask again. That space helped her grow, and over time, she not only delivered with consistency and confidence, but also began taking full ownership of her work with remarkable attention to detail and accountability At the same time, I also make it clear that the freedom I offer shouldn’t be taken for granted. With autonomy comes responsibility. I try to instill that balance of being self-driven but also accountable so she understands that trust is something we build and maintain together. The goal for me is always to make someone confident in their own voice, not just efficient in a task. Can you provide an example of a particularly challenging situation you’ve encountered while mentoring an intern, and how you navigated it to ensure their growth and success? When Jesuine first joined, she came across as quite introverted and found… <a class="more-link" href="https://about.in.mercari.com/uncategorized/two-sides-of-a-desk/">Continue reading Two Sides of the Desk: An Intern-Mentor Journey ft. Smriti and Jesuine at Mercari India</a>

June 4, 2025

From DNS Failures to Resilience: How NodeLocal DNSCache Saved the Day, Sanu Satyadarshi

I am Sanu Satyadarshi, part of the Platform Engineering division at Mercari, Inc. Platform Engineering provides a cost-effective, safe, and easy-to-use multi-cloud infrastructure service for all engineering teams to make and scale bets. This article discusses the DNS-related challenges encountered at Mercari on our Kubernetes clusters and the significant improvements achieved by implementing Node-Local DNS Cache. By optimizing DNS traffic and reducing errors, we enhanced system reliability and scalability, preventing production outages caused by DNS failures. Key Takeaways Reduced DNS calls to kube-dns by 10x, decreasing network overhead and inter-service communication costs. Lowered DNS query rates by 93% for services on the cluster. Achieved a 10x-100x reduction in DNS-level errors, improving system resilience. Eliminated the “failed to refresh DNS cache” errors, mitigating a frequent source of incidents. DNS on Kubernetes: The Elephant in the Room Domain Name System, more commonly known as DNS an extremely critical component in the internet infrastructure. This is the tech that allows your web browser to find the actual IP address of a website when you type example.com in your browser. DNS in itself is a highly complex topic, and understanding it requires a book(or two) on its own. Like any network infrastructure, Kubernetes depends on DNS to resolve service names like [service name].[namespace].svc.cluster.local and other names to IPs and allows communications among services and the external world. From the role of DNS in Kubernetes, you can imagine that any DNS failure or degradation can quickly escalate to increased latency, network congestion, and even complete outages. On Kubernetes, DNS is installed as a kube-dns deployment running on the kube-system namespace. Specifically at Mercari, it comes pre-installed with our managed GKE clusters for service discovery and name resolution across the clusters. kube-dns on Kubernetes allows multiple configurations using the configmap that can be used to change various parameters like ndots, etc. As kube-dns is responsible for resolving all… <a class="more-link" href="https://about.in.mercari.com/news/mercari-india/from-dns-failures-to-resilience-how-nodelocal-dnscache-saved-the-day-sanu-satyadarshi/">Continue reading From DNS Failures to Resilience: How NodeLocal DNSCache Saved the Day, Sanu Satyadarshi</a>

May 28, 2025

Inside the manager’s mind : Manjunath Sagar

Welcome to inside the manager’s mind — a space where leadership meets reality. Explore the highs, lows, and everyday decisions that shape teams and drive success. From strategic thinking to people management, this blog offers raw insights and practical wisdom for those leading or aspiring to lead. In this feature we’d like you to meet Sagar! Sagar : At Mercari India, rapid expansion is more than just scaling numbers—it’s about intentional leadership that fosters clarity, unlocks potential, and nurtures an empowered culture. For me, effective management isn’t just about driving performance; it’s about guiding with steadiness, leading with empathy, and creating a foundation of trust. As we continue to grow, I find myself leaning on a set of principles—some expected, some unconventional—that have shaped the way I support my team. Whether it’s welcoming new talent, refining HR initiatives, or championing individual growth, these values remain at the core of how I lead. 1. Anchor in Calm Amidst Chaos Change fuels innovation, but it also brings uncertainty. In high-growth environments, teams don’t just look to their leaders for solutions—they look for steadiness. My guiding principle: My calm creates their safety; my clarity gives them direction. What I do: Every one-on-one starts the same way—with a genuine “How are you doing?” before diving into work. This small act of care fosters trust and sets the tone for a culture of support. 2. Empower Through Context, Not Control Momentum thrives when people feel empowered, not micromanaged. Providing context allows teams to move with confidence and make decisions independently. What I do: During onboarding and team syncs, I take extra time to explain the reasoning behind our goals—not just what we’re doing, but why it matters. The result? A team that thinks critically, acts decisively, and continuously grows. 3. Normalize “I Don’t Know” Leadership… <a class="more-link" href="https://about.in.mercari.com/news/mercari-india/inside-the-managers-mind-manjunath-sagar/">Continue reading Inside the manager’s mind : Manjunath Sagar</a>

May 9, 2025

From Day 1 to Day 100 at Mercari: A Journey of Growth and Memories ft. Aashutosh Agrawal

When I first heard that Mercari was coming to our campus, I was excited but also a little nervous. It felt like a huge opportunity — and looking back now, I realize it was one of the best experiences I’ve had so far. The Beginning: Placement Journey The process kicked off with an Online Assessment (OA) consisting of two medium-level DSA questions. It tested not just speed but also our ability to think critically under pressure. After clearing the OA, I had my technical interview with Rajat, where we discussed coding approaches, problem-solving techniques, and a few OS and computer science fundamentals. What stood out was how the conversation was more collaborative than a “grill” session. Next was the managerial round with Atif, where the focus shifted towards understanding my motivations, how I work in teams, and cultural fit. It was refreshing to have an open, honest conversation rather than just technical questions. Finally, I remember the day I received the confirmation letter — a mix of relief, excitement, and pride. It was the start of something new. Day 1: A Warm Welcome The first day at Mercari was truly special. From being welcomed with a thoughtfully curated goodies kit to meeting fellow interns and full-time employees during the onboarding, everything felt smooth and personal. The highlight was the team dinner later in the evening — good food, casual chats, and laughter with people who, until a few hours ago, were complete strangers. January: Settling In, Learning the Foundations, and a Special Cricket Memory January was all about getting familiar with Mercari’s world and setting a strong foundation. We started with our common onboarding sessions — diving into essential tools like GitHub, Confluence, Slack, JIRA, understanding Mercari’s overall architecture, and exploring key repositories. These sessions were packed with valuable insights… <a class="more-link" href="https://about.in.mercari.com/news/intern-series/from-day-1-to-day-100-at-mercari-a-journey-of-growth-and-memories/">Continue reading From Day 1 to Day 100 at Mercari: A Journey of Growth and Memories ft. Aashutosh Agrawal</a>

March 19, 2025

My Work Trip to Japan: Insights, Observations & Key Takeaways

At the end of January 2025, my colleagues from the XB Supply team and I finally visited Mercari’s Tokyo office after collaborating remotely with the Japan team for nearly six months. For two of us, including myself, it was our first visit to the Tokyo office after being at Mercari for over 1.5 years, while others had visited before. It was a great opportunity to move beyond Slack profiles and Google Meet headshots and connect with our past and present colleagues in person. Work, Strategy & Strengthening Collaboration The primary purpose of our trip was to participate in business strategy and feature planning for the year, focusing on XB (Cross Border) Supply. Another key objective was to strengthen collaboration by meeting colleagues from various teams working on the XB Supply mission, as well as frequent collaborators like the Shops(B2C) team. Building trust, improving communication, and fostering openness were crucial as we transitioned into the “Back to Startup” phase. In a startup environment, strong personal connections and close collaboration are essential. During our visit, we had the opportunity to meet and collaborate with several key teams, including the XB Supply product team, business development, design, analytics, marketing, and executives. We also connected casually over lunch with other XB engineers. A major highlight was a high-level OKR discussion with the entire Shops division, followed by a dinner with some of the Shops team members. One of the key moments of the trip was a full-day workshop where the XB Supply JP and IN teams came together to brainstorm ideas for the initiative. I also had the chance to reconnect with colleagues from my previous teams (Team Orion and LTVG). Beyond these meetings, it was insightful to physically attend the XB All-Hands and Japan All-Hands, experiencing the energy and alignment in person. I… <a class="more-link" href="https://about.in.mercari.com/news/my-work-trip-to-japan-insights-observations-key-takeaways/">Continue reading My Work Trip to Japan: Insights, Observations & Key Takeaways</a>

February 24, 2025

Inside the manager’s mind : Gaurav Bansal

Welcome to inside the manager’s mind — a space where leadership meets reality. Explore the highs, lows, and everyday decisions that shape teams and drive success. From strategic thinking to people management, this blog offers raw insights and practical wisdom for those leading or aspiring to lead. In this feature we’d like you to meet Gaurav Bansal! Gaurav Bansal: As a manager, my constant focus is on solving challenges that my team faces. The key is staying aware of these challenges, acknowledging them, and taking decisive action. Let me share how I approach some common management challenges. Building Cross-Functional Collaboration When my team expanded from client-only developers to include Backend developers, I noticed collaboration gaps emerging. While client developers had strong relationships from working together for a year, the integration with Backend developers needed attention. To address this, we focused on creating a collaborative environment through regular team activities, including recent bowling and dinner events that helped break down barriers and foster natural connections. We’ve made significant strides in fostering technical understanding between teams. Our backend team now regularly shares insights about API performance, which has led to client teams implementing more effective loading states. Similarly, when client teams demonstrate user interactions, it helps backend developers design more intuitive API endpoints. These exchanges have transformed our team’s mindset from “That’s not my job” to “How can I help?” Maintaining Team Motivation Recognition plays a crucial role in keeping the team motivated throughout the development lifecycle. We celebrate joint wins and team contributions, making sure everyone feels valued for their unique contributions. Mercari’s employee-centric culture and various club activities provide additional avenues for engagement and motivation.Work-life balance is another cornerstone of our approach. We’ve implemented flexible working hours, understanding that some team members are early birds while others peak later in… <a class="more-link" href="https://about.in.mercari.com/news/inside-the-managers-mind-gaurav-bansal/">Continue reading Inside the manager’s mind : Gaurav Bansal</a>

January 31, 2025

Celebrating Togetherness: Mercari India’s First Family Day

At Mercari India, we believe our strength lies not only in our innovative spirit and commitment to excellence but also in the strong bonds we share as a team. This belief was beautifully celebrated during our first-ever Family Day, a heartwarming and fun-filled event that brought our work family and real families together. In the fast-paced corporate world, it’s easy to get caught up in the daily grind, often leading to stress and burnout. Family Day serves as a refreshing reminder of the importance of work-life balance. It acknowledges the incredible support systems behind each of our team members and celebrates the holistic approach to professional success. The event was brimming with joy, laughter, and a plethora of activities designed to engage everyone, from the youngest family members to the seasoned professionals. There were games, music, delicious food, and an overall atmosphere of camaraderie and togetherness. This day was not just about having fun; it was about strengthening the bonds that make Mercari India a close-knit community. In today’s corporate landscape, the emphasis on productivity and results can sometimes overshadow the human aspect of our work environment. Family Day is a powerful counterbalance to this trend. It allows employees to unwind, connect with their colleagues on a personal level, and recharge their spirits. This, in turn, enhances job satisfaction, boosts morale, and ultimately leads to increased productivity. Following in the footsteps of our HQ, Mercari Japan, we are dedicated to creating a work culture that values both professional excellence and personal well-being. As we reflect on the success of our first Family Day, we are filled with gratitude for the incredible team and their families who made this day unforgettable. We look forward to many more such celebrations as we continue to foster a work culture that values both professional… <a class="more-link" href="https://about.in.mercari.com/news/celebrating-togetherness-mercari-indias-first-family-day-2/">Continue reading Celebrating Togetherness: Mercari India’s First Family Day</a>

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