Tathagat Thapliyal
Building Simbian AI
Bengaluru, India
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I’m a Lead JavaScript Engineer, focused on building scalable web products. Currently spearheading Frontend and Design initiatives at Simbian AI.
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Authentication done right: Consuming (and Serving) Oauth
Having worked and working with good YC startups and organizations like Coding Blocks Delhi, I have been around with NodeJS and MERN from quite a long and this session is nothing but my journey of how to scale a large project on NodeJS and Implementing OAuth. Also talking about the best practices one should adopt while working on big NodeJS and MERN Projects.
In this age, you cannot make a login system without Login with [Facebook|Google|Twitter|...]
This talk is nothing but my journey of building Authentication.
I eventually wrote one Authentication in NodeJS, which uses a lot of open source tools from
AuthO (including the famous PassportJS)
Focus Of Talk -
-Usual local authentication (email + username + password)
-Best practices (project structure)
-Consuming Oauth from Facebook/Twitter/Github or others
-Connecting existing account to social logins
-Building your own OAuth server
How AI Can Refactor Your Frontend Workflow: Copilot, Cursor, v0.dev in Practice
Frontend engineering has reached a new level of complexity. Modern teams juggle React/Next.js frameworks, sprawling monorepos, performance constraints, and security challenges—often while balancing uneven skill sets across full-stack engineers. For years, our workflows have been largely unchanged: design handoff → manual scaffolding → iterative refactor → production hardening. But with the rise of AI-powered tools, that model is rapidly evolving.
In this talk, we’ll explore how AI is not just writing code, but fundamentally refactoring the frontend workflow itself. Through real examples, we’ll break down the roles of three leading tools:
GitHub Copilot as a micro-productivity booster for inline code, boilerplate reduction, and bug fixes.
Cursor as a codebase-aware IDE for large-scale refactors, framework migrations, and architecture-level transformations.
v0.dev as a design-to-code accelerator, generating production-ready React/Tailwind/shadcn components directly from natural language prompts.
You’ll see how these tools reshape pipelines-from turning requirements into prototypes in minutes, to evolving those prototypes into hardened production code with AI-assisted refactoring, to enabling cross-discipline engineers (backend, design) to meaningfully contribute to frontend systems.
We’ll also cover the pitfalls: hallucinated APIs, style drift, security blind spots, and the risk of over-reliance. Most importantly, you’ll walk away with best practices: how to set up guardrails (linting, CI/CD, Cursor rules), how to craft effective prompts for consistent results, and how to introduce AI safely into your team’s workflow without sacrificing quality or ownership.
By the end, you’ll have a clear vision of how to evolve your frontend development process into an AI-augmented pipeline-one where engineers focus less on scaffolding and syntax, and more on solving higher-order challenges of performance, reliability, and user experience.
Microfrontends in the Wild - Lessons from Adoption and What to Avoid
Microfrontends promise to break down large, complex applications into independently deployable units-unlocking team autonomy, faster releases, and scalable architectures. On paper, they sound like the natural next step after microservices. In practice, however, the reality is more nuanced.
This talk shares hard-earned lessons from adopting microfrontends in production at scale. We’ll walk through what worked well, where hidden complexity appeared, and the trade-offs teams rarely talk about before diving in. Topics include:
- When microfrontends shine: organizational scaling, parallel development, domain-driven boundaries.
- Where they hurt: runtime overhead, inconsistent user experience, duplicated dependencies, and infra bloat.
- Architectural patterns in the wild: iframe isolation, build-time composition, runtime composition with Module Federation, and hybrid approaches.
- Cross-cutting concerns: auth, routing, design systems, and performance budgets—how small mistakes here multiply quickly.
- What we’d do differently: practical guardrails, governance models, and tooling choices that helped (or failed).
Attendees will walk away with a playbook of do’s and don’ts: how to decide if microfrontends are right for your org, how to adopt incrementally without overwhelming infra or developers, and how to avoid the most common pitfalls.
Whether you’re considering microfrontends for the first time, actively migrating, or living with the consequences, this session will help you see beyond the hype and make grounded architectural decisions.
State Management Wars Revisited - MobX, Zustand, Redux Toolkit, Recoil
State management has always been one of the most debated topics in frontend engineering. From the early days of vanilla Redux boilerplate to newer contenders like Zustand and Recoil, teams often find themselves asking: Which library is right for us, and why?
In this talk, we’ll revisit the “state management wars” with fresh eyes in 2025. Instead of comparing frameworks in isolation, we’ll explore them in the contexts where they truly matter:
- MobX — reactive power and complex observable models, where it still outshines others.
- Redux Toolkit — the “batteries-included” ecosystem for large, predictable apps.
- Zustand — lightweight stores, hooks-first API, and why it’s trending in modern React apps.
- Recoil — atom/selectors and concurrent rendering, but where adoption struggles.
Beyond syntax, we’ll dive into real trade-offs: performance at scale, developer experience, ecosystem maturity, debugging tools, and team onboarding. You’ll hear lessons from production apps where each of these solutions either saved the day-or created long-term pain.
Attendees will walk away with a decision framework, not just a comparison chart:
- When to prefer simplicity over structure.
- How to migrate safely if you’ve outgrown your current choice.
- What to avoid if you don’t want to be locked in by hype.
- If you’ve ever argued “Redux vs. anything else” in a code review-or if your team is about to start a new project-this session will give you the clarity to choose wisely, revisit assumptions, and avoid repeating history in the next round of state management debates.
Tathagat Thapliyal
Building Simbian AI
Bengaluru, India
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