Grejo Joby

Software Engineer

Mumbai, Maharashtra, India3 yrs 10 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in AdTech solutions with proven results.
Strong problem-solving skills demonstrated in high-pressure environments.
Passionate about web development and continuous learning.

Stackforce AI infers this person is a Full-Stack Developer specializing in AdTech and Web Development.

Contact

grejo.j@media.net LinkedIn

Skills

Core Skills

Web DevelopmentSoftware DevelopmentAdtech

Other Skills

AdTech solutionsAdcode ServiceAdcode TokenAdcode managementAerospikeAkamaiAnalytical SkillsAngularApache KafkaArchitectureAstroAvailabilityBootstrapC#CSS

About

Problem Solver with Smart, Quick and Precise Googling Skill. Seek and you shall find! A passionate computer engineering student with affinity towards development and programming and working dominantly on Web Technologies. Responsible, hardworking, dedicated, trustworthy and committed to work on new technologies and projects. Constantly exploring newer boundaries of technologies and a continuous avid learner. I love to take up new challenges and put in my best efforts to drive to best results. Talk to me about: Web Development / C / C++ / Python / Django / Flask / Git / GitHub / Bootstrap / MongoDB / MySQL / Shared Web Hosting / Domain,DNS / Cloudflare / Digital Ocean / AWS / Firebase / ReactJS / React Native / Flutter / Unity Game Engine I had a pioneer role in various projects and websites as part of my dedication to the college and worked for organisations and teams like ACM, Traning and Placement Cell and many others to showcase the best of my skills and improve my experience in the field. I'm always sought after for my personality and my responsibility in getting things done with perfection.

Experience

3 yrs 10 mos

Total Experience

3 yrs 10 mos

Average Tenure

3 yrs 10 mos

Current Experience

Media.net

3 roles

Senior Web Application Developer

Jan 2025 – Present · 1 yr 5 mos · Mumbai, Maharashtra, India

Contextual Advertisement
Programmatic Advertising (DSP, RTB)
Real-time Adtag Generation
Domain Monetization

Contextual AdvertisementProgrammatic AdvertisingReal-time Adtag GenerationDomain MonetizationWeb DevelopmentSoftware Development

Web Application Developer II - Software Engineering

Promoted

Jan 2024 – May 2025 · 1 yr 4 mos · Mumbai, Maharashtra, India

Developed higly revenue impacting AdTech solutions.
Cross-functional team collaborations to analyze data, identify opportunities, and implement improvements to optimize performance and revenue.
Demonstrated strong problem-solving skills and attention to detail in identifying and implementing solutions to enhance AdTech functionality.
Actively participated in code reviews and debugging to identify and resolve issues, resulting in improved system reliability and performance.
Adcode Service: Generates adcode for real-time bidding (programmatic buying) for 30K QPS in under 10ms (p95). Achieved with in-memory as well as redis caching, optimal code & deployment.
O-LA(From scratch): Redesigned ad-serving architecture from 2 client I/Os to 0 or 1 I/O, reducing client-side load times. Achieved reductions from 1 second to a few milliseconds for 20% of traffic and to 400ms for the remaining 80% at p95.
Canary deployment: added with weighted traffic split at the load balancer (LB) level for major changes.
Horizontal scaling: Dockerized Go applications, optimizing images with multi-stage builds, improving Kubernetes Pod readiness time.
Availability: Optimized GKE configs, Custom DC health check service for Route 53 (R53), selecting traffic destination DC based on health scores.

AdTech solutionsCross-functional team collaborationsProblem-solvingCode reviewsDebuggingAdcode Service+6

Software Engineering - Web Application Developer

Aug 2022 – Jan 2024 · 1 yr 5 mos · Mumbai, Maharashtra, India

Log & Redirect(From Scratch): Accept encrypted requests, decrypt it, logs it and redirects it to third-party url within the request.
Adcode Token(From Scratch): Implemented a checksum-based adcode validation system to detect and prevent adcode manipulations at client side.
Code Size & Coverage: Reduced JavaScript size by 50% with modularization and dynamic script stitching; increased coverage to 85% with tree-shaking.
Re-Write: Crucial to a major PHP to Go code rewrite, including validation of the new system and migration of traffic
Compact URL: optimized request/response payload size by offloading and obtaining it from Aerospike for multi-DC traffic

Log & RedirectAdcode TokenJavaScript optimizationPHP to Go code rewriteCompact URL optimizationWeb Development+1

Quezx.com

Software Intern

Jun 2019 – Jun 2019 · 0 mo · Mumbai Area, India

I worked on HTML, CSS based web development projects. I also worked on components build with Angular framework. The internship helped me in enhancing my web development, critical thinking and problem solving capabilities.

HTMLCSSAngularWeb Development