Open to opportunities

Sikandar Saleem

@sikandarsaleem1

Senior software engineer specializing in scalable React/Node/Python architectures, clean design, and AI-enabled product automation.

United States

Message

What I'm looking for

I’m looking for a team where I can lead scalable architecture using Clean Architecture/DDD, strengthen CI/CD and TDD culture, and build AI-enabled product features that deliver measurable outcomes—while mentoring engineers and reducing long-term technical debt.

I’m a Senior Software Engineer with over 10 years of experience architecting mission-critical, high-scale web ecosystems using React, Node.js, Python, and Ruby on Rails. I focus on polyglot architectures that combine Rails iteration speed, Node.js high-concurrency performance, and Python’s data-processing power to deliver measurable product impact.

I’ve led multi-year legacy migrations, defined organizational CI/CD standards, and optimized distributed databases to support millions of concurrent users. I advocate for Clean Architecture and Domain-Driven Design (DDD), institutionalize Test-Driven Development (TDD), and mentor teams to scale sustainably—recent wins include integrating OpenAI (GPT-4) and building RAG with LangChain, improving engagement by 25%, and cutting First Contentful Paint by 1.5s through React performance work.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Turing, Emote USA

Oct 2024 - Present (1 year 8 months)

Integrated OpenAI GPT-4 into the Smart Editor, increasing platform engagement by 25%. Improved dashboard performance by 1.5s FCP, built high-concurrency REST APIs for 100k+ monthly active users, and reduced Rails background job time by 50% using Sidekiq.

GPT 4 React Next.js Ruby on Rails PostgreSQL Sidekiq Redux toolkit

Senior Software Engineer

Signal Security, Emote USA

Sep 2021 - Dec 2024 (3 years 3 months)

Built a multi-tenant Ruby on Rails architecture with fine-grained RBAC for enterprise security clients and optimized incident alert latency by improving Rails background processing. Led event-driven Node.js microservices, offline-first React sync with conflict resolution, and compliance reporting automation that reduced manual documentation time by 40%.

Ruby on Rails Node RBAC Microservices Event Driven Architecture React Offline First Redis WebSockets

Senior Software Engineer

TKXEL, Remote USA

Feb 2018 - Sep 2021 (3 years 7 months)

Implemented Next.js SSR to improve SEO and reduce initial load time, and containerized Node.js microservices with Docker for independent deployments. Built event-driven workflows with RabbitMQ/Redis queues, improved API resilience with Redis rate limiting/caching, and reduced deployment time via GitHub Actions.

Next.js React Node Docker RabbitMQ Redis GitHub Actions CI CD Sentry

Software Engineer

Dubizzle Labs, Emote USA

Jul 2014 - Feb 2018 (3 years 7 months)

Built high-concurrency React search interfaces supporting 200M+ monthly active users and scaled backend Node.js/Express microservices to handle seasonal traffic spikes. Optimized PostgreSQL indexing/ActiveRecord for lower listing latency, created AI fraud detection to improve data integrity, and maintained 95% test coverage with Jest/Cypress.

React Node PostgreSQL Ruby on Rails Redux toolkit Fraud Detection Jest Cypress