Kartik Singh

Backend Engineer

Mumbai, Maharashtra, India3 yrs 6 mos experience

Key Highlights

Transitioned from customer support to backend development.
Proficient in Java and Spring Boot for backend systems.
Strong problem-solving mindset with user empathy.

Stackforce AI infers this person is a Backend Developer with a focus on SaaS applications.

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Skills

Core Skills

JavaSpring Boot

Other Skills

Object-Oriented Programming (OOP)JUnitJava concurrencyCross-Cultural Communication SkillsGitMySQLMultithreadingData StructuresAlgorithms

About

I began my career in customer support, helping users through complex systems. Over time, I realized I wanted to do more than support — I wanted to build. Today, I’m on a focused path to becoming a backend developer. I’m learning Java, Spring Boot, and system design, and actively building real-world projects to apply what I learn. I bring with me strong communication skills, user empathy, and a mindset for solving problems — now, through code.

Experience

3 yrs 6 mos

Total Experience

1 yr 3 mos

Average Tenure

11 mos

Current Experience

Self-employed

Backend Developer – Personal Project

Jul 2025 – Present · 11 mos · mumbai india · Remote

Developing a YouTube-style backend system using Java and Spring Boot
Designed user registration, login, and profile services with clean OOP & SOLID principles
Wrote unit tests with JUnit to ensure reliability and code quality
Applied Java concurrency (thread pools, Callables) to simulate real-world processing

JavaSpring BootObject-Oriented Programming (OOP)JUnitJava concurrency

Teleperformance global services

Customer Service Ambassador - Airbnb

Feb 2024 – Apr 2025 · 1 yr 2 mos · India · On-site

Supported users of Airbnb via phone, chat, and email, resolving booking, payment, and account-related issues.
Acted as the frontline representative for Airbnb’s customers, ensuring a seamless and respectful guest/host experience.
Managed escalations involving cancellations, refund disputes, and safety concerns with professionalism.

Concentrix

Sr. Representative, Operations

Jul 2022 – Dec 2023 · 1 yr 5 mos · India · On-site

Resolved customer queries with empathy and efficiency, ensuring a high level of satisfaction.
Helped customers reduce their monthly billing by up to 50% through accurate analysis and tailored solutions.
Learned and applied the art of consultative selling, balancing customer trust with business outcomes.