Shubham Shukla. Eight years shipping developer platforms, APIs, and SDKs from zero to one across HR-tech and fintech SaaS. Three public platform launches, each with its own developer documentation. Currently own the foundational platform layer and partner ecosystem at Multiplier.
Each node below is a platform taken from zero to public launch, covering architecture, developer docs, and partner ecosystem. Click one to open the full case study.
Multiplier's product surface area was growing faster than its foundational layer could support. Every new feature needed its own access control, audit trail, and notification logic built from scratch, and partners had no way to embed Multiplier workflows into their own products.
Two suites end to end. Core Foundations is the platform layer every product team ships on top of: I built RBAC/ABAC, SSO and login, audit logs, custom fields, notifications, and an AI-powered report builder from scratch, so no other team has to. Strategic Partnerships is the external surface: the APIs, webhooks, and SDK that let partners build on Multiplier without needing our engineering team in the loop.
Led the 0-1 launch of an Embed SDK, letting partners white-label and embed Multiplier workflows inside their own products without any custom engineering on our side. Shipped Open APIs and Webhooks as the first self-serve integration surface at Multiplier, cutting partner time-to-integrate from weeks of back-and-forth to a self-guided process. Before this, every partner integration required bespoke work from our team. Now it does not.
Keka had strong product-market fit in core HR but no structured way for third-party vendors (background check providers, e-signature tools, job boards) to integrate, and no system to manage or track partner relationships at scale.
Launched an App Marketplace from scratch, bringing in 80+ integrations including Indeed, DocuSign, Checkr, and Slack. Built the Developer Platform, a portal with App SDKs, so partners could build and host their own apps on Keka without needing custom engineering support each time. Also built a self-service Integration Platform covering REST APIs, webhooks, and auth frameworks for third-party developers.
Introduced a Partner Relationship Management system that automated lead sharing and revenue tracking, increasing partner acquisition by 30%.
Darwinbox's integrations were built on traditional point-to-point middleware. Every customer integration was a one-off engineering project, and the approach didn't scale as the customer base grew.
Built and launched Darwinbox Studio, an in-house iPaaS platform, from zero. Migrated 350+ existing integrations from middleware onto the new architecture using SDKs and a low-code builder, cutting maintenance overhead by 25%. Designed the underlying API-first platform, now supporting 125+ APIs and listed on the Darwinbox Marketplace.
The platform reached profitability within two years and became the default integration path for all new partners. The legacy middleware approach was retired entirely.
From integrations delivery to platform ownership. The common thread across every role is building reusable systems rather than custom builds that need replacing six months later.
Own Core Foundations and Strategic Partnerships, covering the platform layer and ecosystem strategy underneath every Multiplier product.
Built Keka's App Marketplace and Developer Platform from zero; introduced PRM tooling that lifted partner acquisition 30%.
Launched Darwinbox Studio (iPaaS), reaching revenue within two years; designed the 125+ API platform underneath it.
Led 100+ HRMS integrations and a team of 9, growing integration revenue 30% through process optimization.
Built internal tooling, including a Mulesoft migrator, saving roughly 60% of engineering effort on recurring integration work.
The recurring toolkit across three platform builds.