Rohan Lahori
Software Engineer @ Docusign
About
Hi, I’m Rohan! I’m passionate about building scalable backend systems and exploring how they function at scale. I enjoy solving complex problems, improving performance, and strengthening system reliability. I’m currently a Software Engineer at ToolJet, working on the platform team. Previously, at DeltaX (Ad-Tech), I contributed to optimizing microservices and building API-driven solutions. 🏆 Beyond work, I have actively participated in programming competitions, with achievements including ICPC Global Rank 164 and Google HashCode AIR 94. ⚙️ Tech Stack: C++, C#, TypeScript, ASP.NET Core, NestJS, SQL Server, PostgreSQL
India
Bengaluru
Information Technology & Services
TypeScript, Software Design, Object-Oriented Programming (OOP), PostgreSQL, NestJS, JavaScript, ReactJs, Concurrent Programming, BDD, API Development, Git, .NET Framework, Object Oriented Design, Vuex, DataStructures and algorithms, Vue.js, Relational Databases, HTML5, Bootstrap, CSS(Basics)
Experience

Software Engineer
Remote
• Engineered a scalable Git integration layer with SSH & HTTPS support, enabling seamless sync with GitHub/GitLab. • Applied the Strategy Pattern to modularize Git operations (clone, push, pull), cutting integration effort by 40% and ensuring extensibility. • Merged Community & Enterprise features into a unified repo via Git submodules, eliminating redundancy and boosting developer efficiency by 30%. • Refactored platform features into modular UI components, reducing code duplication and extending features across editions. • Improved release stability by resolving critical bugs during major releases and addressing 10+ customer issues. • Implemented role-based permissions for app Promote & Release, enabling admin control from the UI.

Associate Product Engineer
Bengaluru, Karnataka, India
Working closely on the product that exports AdSegments on LinkedIn for using them in the AdCampaigns to improve audience targeting and campaign performance. • Refactored the Update AdCampaign service by transitioning updates from audience level to account level. • This optimization resulted in a significant reduction of 80-90 % in LinkedIn Search Ad-campaign account level calls which notably enhanced the speed of processing updates. • Wrote required test scenarios in Gherkin using the Specflow framework to test all the AdCampaign updates by mocking the live LinkedIn API calls. • Added Oauth exception handling flow in all the services, which marks the OauthExpired flag in the database and stopped continuous retry of failed tasks. • Implemented functionality to ReUpload Adsegment on LinkedIn and delete older segments when the processing fails due to any transient error on LinkedIn. • Removed caching logic for counting matched audiences from the API and moved it to monitor Service and store the value in the database, which helped to reduce live LinkedIn API calls. • Currently, working on migrating the LinkedIn API’s endpoints to the latest January 2024 version.

Product Engineering Intern
• Worked on: Backend: Asp.Net Core, Rest API’s, BDD Databases : SQL Frontend: HTML/CSS, VueJS • Worked on designing database for the application and used Microsoft SQL Server for managing DB. • Implemented layered architecture including Repository, Service, and Application layers in the application. • Used Behavior-Driven Development (BDD) for testing all the features using Specflow & Gherkin syntax. • Developed ImdB Web API application using ASP.Net which supports CRUD operations for all entities. • Used Stored Procedures to improve the performance of the application & optimize DB operations. • Implemented Mocking for unit testing, created mocks for all entities, and mocked all the database dependencies.

Problem Setter Intern
• My role was to design and test Coding problems around various Data Structures and Algorithms. • Created and tested problems on various topics such as Queues, Arrays, DSU, Sorting, Strings, and Hash Tables and wrote editorials with explanations for the same.
Rohan Lahori's Contact Information
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