Rohan Lahori

Software Engineer

Bengaluru, Karnataka, India5 yrs 3 mos experience

Most Likely To Switch

Key Highlights

Engineered scalable backend systems at ToolJet.
Optimized AdCampaign performance at DeltaX.
Achieved ICPC Global Rank 164 in programming competitions.

Stackforce AI infers this person is a Backend Engineer with experience in SaaS and Ad-Tech industries.

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Skills

Core Skills

NestjsSoftware DesignC#Api DevelopmentAsp.netRest ApisProblem SolvingAlgorithms

Other Skills

.NET FrameworkASP.NET CoreBDDBootstrapC++CSS(Basics)Concurrent ProgrammingDataStructuresGitHTML5PostgreSQLProblem DesignReactJsRelational DatabasesSQL

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

Experience

Tooljet

Software Engineer

Jul 2024 – Present · 1 yr 8 mos · Remote · Hybrid

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.

ReactJsNestJSPostgreSQLTypeScriptSoftware Design

Deltax

2 roles

Associate Product Engineer

Aug 2023 – Jul 2024 · 11 mos

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.

.NET FrameworkC#Concurrent ProgrammingREST APIsGitAPI Development+2

Product Engineering Intern

Feb 2023 – Jul 2023 · 5 mos

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.

BootstrapHTML5C#Vue.jsASP.NETRelational Databases+5

Imocha

Problem Setter Intern

Jun 2022 – Apr 2023 · 10 mos

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.

Problem SolvingAlgorithmsC++DataStructuresProblem Design

Codechef ldce chapter

Event Lead

Nov 2020 – Dec 2022 · 2 yrs 1 mo

Improved Coding culture in college by organizing events as an Event lead in CodeChef LDCE Chapter.
This initiative improved participation from our College in various prestigious programming Contests.