Available for new roles

Sakib Devlekar

Backend Eng

Backend Engineer with 3+ years of experience designing and building scalable backend systems, high-throughput APIs, and database optimizations. Currently building at Bluebash.

Resume

GitHub

Kolhapur, Maharashtra, IndiaLinkedInSakibdevlekar

Edge

Node API

Telemetry

MongoDB

System Active

Awaiting payload...

Architecture 1/3

Global Edge Proxy

Low-latency routing across global POPs.

Engineering backend systems that scale in production

Dedicated to building high-performance server-side architectures, robust REST APIs, and database optimizations.

Engineering Overview

I am a Backend Engineer based in India with 3+ years of experience designing and shipping production software across fast-paced environments like Bluebash and Techlapse.

My core expertise spans building modular REST APIs with Node.js and Express.js, designing MongoDB/MySQL schemas, and optimizing aggregation pipelines. At Bluebash, I architected a reseller platform and optimized database performance, cutting API response times by ~60%.

I've contributed to infrastructure monitoring systems at scale, including client platforms managing 1,500+ distributed proxy resources, and enforce strict JWT/RBAC security policies.

Technical Core Competencies

Backend & APIs

Scalable REST APIs, Node.js, Express.js, and Event-Driven Systems.

Databases & Optimization

MongoDB aggregation pipelines, indexing, MySQL, PostgreSQL, and Redis.

Security & Auth

JWT, RBAC, API Key Management, and access control hardening.

Testing & Quality

Jest, Supertest, unit/integration testing, and CI/CD pipelines.

System Design

Production-grade architecture with real-time notifications via Socket.io.

Cloud & Infrastructure

AWS EC2, S3, Docker containerization, and DigitalOcean deployments.

Years Experience

Projects Delivered

60%

Latency Reduction

Engineering Principles

"Ship modular code, measure latency with real data, eliminate bottlenecks early. Clean API contracts and thorough testing guarantee production peace of mind."

Current Focus

Associate Software Developer at Bluebash

Building SaaS reseller architecture & proxy System

Engineering Arsenal

Tools, technologies, and platforms I use to build, scale, and maintain modern applications.

Node.js

Express.js

NestJS

Socket.io

BullMQ

Production

Proficient

Familiar

Where I've worked

Bluebash

Associate Software Developer·full-time

Sep 2024 – Present

Mohali, India (On-site)

▸Delivered and maintained production-grade backend systems supporting customer onboarding, subscriptions, automation, and platform scalability.
▸Leading integrations for Kickcall.ai, connecting GHL, Kargon, Zapier, and Freshworks workflow automation (n8n in development).
▸Built and launched a reseller platform that onboarded the first paid reseller and enabled a new B2B revenue stream.
▸Engineered large-scale proxy monitoring and automation systems across global locations, improving reliability and reducing downtime.
▸Designed subscription, coupon, billing, and bulk management workflows that improved operational efficiency and support processes.
▸Built KPI and revenue dashboards using MongoDB aggregation pipelines, enabling visibility into MRR, LTV, and subscription growth.
▸Resolved critical production incidents involving legacy systems, third-party dependencies, and infrastructure issues with minimal customer impact.
▸Improved production stability through debugging, performance optimization, backend validation, and edge-case handling.

Node.jsExpress.jsMongoDBAWSSystem ArchitectureSaaS / Billing

Techlapse Pvt. Ltd.

Software Engineer·full-time

Apr 2023 – Aug 2024

Pune, India

▸Built and maintained RESTful APIs using Node.js and Express.js powering customer-facing applications, internal workflows, and system integrations.
▸Developed real-time communication features using Socket.io, enabling live notifications and interactive application experiences.
▸Implemented JWT-based authentication and role-based access control (RBAC) systems to improve application security and user access management.
▸Optimized MongoDB and MySQL queries through indexing, aggregation pipelines, and backend performance improvements, reducing API response latency.
▸Delivered full-stack production features across backend APIs, React.js frontend components, and database schema updates.
▸Identified and resolved backend bottlenecks, memory leaks, and application stability issues through debugging and performance optimization.

Node.jsExpress.jsMongoDBMySQLPostgreSQLSocket.ioJWT / RBACReact.js

Relevel by Unacademy

Back End Developer·internship

Apr 2022 – Feb 2023

Remote

▸Built foundational backend development skills using JavaScript and Node.js.
▸Developed backend services and RESTful APIs using Express.js.
▸Worked with MongoDB and MySQL for database operations, schema design, and data management.
▸Implemented CRUD operations, input validations, and backend error-handling workflows.
▸Gained hands-on exposure to API testing, request handling, asynchronous workflows, and backend application architecture.

JavaScriptNode.jsExpress.jsMongoDBMySQLREST APIsAPI Testing

Bluebash Work

In-house products and client systems I've built while at Bluebash.

Mountproxies (Reseller SaaS & Proxy Infrastructure)

Client project

● Live

Backend engineer on Bluebash's Mountproxies platform, a production SaaS system for premium and reseller customers. Progressed from feature contributor to backend feature owner, leading end-to-end delivery across architecture, implementation, deployment, and production optimization. Scale: Infrastructure managing 1,500+ distributed proxy endpoints.

Built and launched a reseller platform that onboarded the first paid reseller, enabling a new B2B revenue stream
Engineered large-scale proxy monitoring and automation across global locations, improving reliability and reducing downtime
Resolved a MongoDB aggregation pipeline bottleneck causing query latency in dashboard and subscription operations, through redesigned indexing and pipeline restructuring
Built KPI and revenue dashboards (MRR, LTV, subscription growth) using MongoDB aggregation pipelines

Node.jsExpress.jsMongoDBAWSREST APIsSystem Design

Private RepositoryLive Demo

Kickcall.ai

In-house product

● Active

Worked on Bluebash's Kickcall integrations team, building integrations for GHL, Kargon, Zapier, and Freshworks (n8n in development) so users can trigger automated workflows from Kickcall streams. Played a key role across the full cycle, from research to deployment, for each marketplace integration.

Node.jsExpress.js3rd Party Integrations

Private RepositoryLive Demo

Personal Projects

Products and tools I've built outside of work.

Imagnify

AI-powered image processing SaaS

● Live

Designed and shipped a full-stack AI-powered image processing SaaS solo, using a React/Next.js front end, Node.js-style API routes, and a MongoDB backend. It covers restoration, recoloring, background removal, and enhancement. Integrated Stripe payments, Clerk authentication, and Cloudinary AI processing into a complete, deployed production workflow.

Full-stack AI SaaS shipped solo
Stripe & Clerk integration
Cloudinary AI image processing

Next.jsReactMongoDBStripeClerkCloudinary AI+1

Private Repository

MCP Integration Gateway

The Ultimate AI Agent Toolbox

● Active

A Unified API Gateway that connects AI agents to thousands of APIs in seconds. It acts as an Agent-to-Tool bridge with programmable security policies, rate limiting, and cost tracking. Integrated seamlessly with leading voice AI platforms like LiveKit, Pipecat, Bland AI, Vapi, and Vocode.

Programmable Security Policies
Unified Agent-to-Tool Bridge
Integrations with Voice AI Platforms

Node.jsMCP ProtocolMongoDBRedis

Private Repository

View all repositories on GitHub

Open Source contributions

Code I've written for the community and issues I've filed upstream.

nil2022/CRM_App

Nil CRM App

Contributed to the development of the Nil CRM App repository.

Project

socketio/socket.io

Socket.io Issue #5511

Helped analyze and troubleshoot a core issue related to Socket.io connections.

Bug Report

View GitHub profile

What people say

Feedback from people I've had the pleasure of working with.

Akshay Jadhav

Techlapse Pvt Ltd, Founder

"I had the pleasure of mentoring Sakib Devlekar in backend development, covering technologies such as Node.js, MongoDB, AWS, and more. Throughout our time together, Sakib demonstrated an exceptional ability to grasp complex concepts quickly and apply them effectively in real-world scenarios. Their dedication to continuous learning and problem-solving skills set them apart as a promising developer. I do not doubt that Sakib will excel in any challenging environment and contribute significantly to any team they join."

Let's build something extraordinary

Open to AI engineering roles, consulting, and interesting open-source collaboration. I usually respond within 24 hours.

Connect

Reach out directly

Email Address

sakibdevlekar96@gmail.com

GitHub

Download Resume

Available