Harpreet Singh

Software Engineer

India9 yrs 4 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in Java and backend development.
Proven track record in optimizing system performance.
Strong problem-solving skills with a focus on algorithms.

Stackforce AI infers this person is a Fintech and SaaS backend developer with strong expertise in Java and system optimization.

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Skills

Core Skills

JavaAlipayWeb Services

Other Skills

RPCSAGABatch ProcessingUPICCDCStatus Query ControllerSliding Window TechniqueBack-end DevelopmentReal-time AnalyticsGreedy AlgorithmValidation LibraryData StructuresAlgorithmsJava 8

About

"I love to implement new and creative things which is a challenge for me. I prefer to work which beyond my limits to accomplish goals." "I Eat, Breathe and Sleep in code. I love to play with Data structures and Algorithm." A well-qualified, dynamic IT professional with around 5+ years of experience. • Adroit in Problem Solving, Designing (Data structures / Algorithms), Analysis. I always look forward to optimize solution for performance enhancement. • With a great learning curve and open to adapt to new technologies. • In my stint so far, I've worked on Java, MySQL, MongoDB , Android, JQuery Specialties: Languages : Java, Python DB : Mysql, MongoDB Version Control : SVN, GIT You can know more about me on http://www.harpzz.in/

Experience

9 yrs 4 mos

Total Experience

2 yrs 4 mos

Average Tenure

3 yrs 8 mos

Current Experience

Intuit

2 roles

Staff Software Engineer

Promoted

Aug 2025 – Present · 9 mos

Senior Software Engineer

Sep 2022 – Aug 2025 · 2 yrs 11 mos

Airtel x labs

Senior Software Engineer

Aug 2021 – Sep 2022 · 1 yr 1 mo

Paytm

Software Engineer

Jun 2019 – Jul 2021 · 2 yrs 1 mo

Worked on the Alipay's payment platform for payments. Responsible for conciliation, reconciliation and refund process.
Accomplishments
Scale the system to support 11K TPS by implementing the RPC, SAGA etc.
Scale the system by designing the architecture of system into batch processing system.
Improving the transactions by separating it on their business type like UPI, CC, DC etc.
Increase the 20% transaction by implementing the Status query controller using Sliding window technique.
Reduce 40% fund back by improving the status query of the payments.

JavaAlipayRPCSAGABatch ProcessingUPI+4

Milagro interactive technologies

Software Developer

Jul 2016 – Jan 2019 · 2 yrs 6 mos · Chandigarh Area, India

Worked as a Java back-end developer. Responsible to create the web-service, implementing back-end logic.
Accomplishments
Reduce 75% time of manager and salespersons for documenting the leads.
Provide real-time location inside the building so easily can find the location in the company.
Reduce 30% of the development time of developer by creating a validation library.
Optimize the time O(n) to O(log n) of the Application by using Greedy Algorithm
Easy analysis of leads for managers by creating real-time analytics report.
Create the shortest path inside the building using greedy algorithm.
Reduce 60% time of the employees and management by providing the analytics of the projects
Maintain leave records of the employees by providing the provision of apply leave in PMS.
Implement location and time wise restriction on the mobile functionality.
Real-time monitoring feature in the app which records the activity of the children mobile and maintains the log.
Resolved the memory consumption issue by using LRU Cache.