Satyendra Kumar

Senior Software Engineer

Noida, Uttar Pradesh, India6 yrs 1 mo experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in Java and Reactive Programming.
Designed scalable financial transaction systems.
Awarded for exceptional performance in software engineering.

Stackforce AI infers this person is a Backend Software Engineer specializing in Fintech solutions.

Contact

satyendra.iitgoa@gmail.com LinkedIn

Skills

Core Skills

Systems DesignJavaBack-end Web Development

Other Skills

Low-Level DesignHigh-Level DesignSpring BootKafkaGitJUnitAWSPythonObject Oriented DesignHibernateMultithreadingRedisSQLC++Analog Circuit Design

About

Enjoy solving complex problems in a simpler way with an efficient code. Expertise in Java, Data Structure & Algorithm and Reactive Programming. Experience working in microservice-based architectures, system design, restful web services, backend deployments. Worked on technologies like Java, Spring Boot, Reactive Spring, Kafka, Mysql, Elastic Search, Redis, DynamoDB, Monitoring Tech.(Grafana, Prometheus, Cloudwatch alarms, PromQL, LogQL), REST APIs.

Experience

6 yrs 1 mo

Total Experience

3 yrs

Average Tenure

4 yrs 11 mos

Current Experience

Paytm

2 roles

Senior Software Engineer

Promoted

Jul 2024 – Present · 1 yr 10 mos · Noida

1-Working in the OAuth Team, responsible for critical authentication systems including passwords, OTP, access tokens, and device binding, ensuring secure and seamless user login experiences at scale.
2-Designed and owned a scalable reconciliation system for high-volume financial transactions (Bank ↔ Paytm), enabling accurate tracking of settled and unsettled transactions.
3-Built robust knock-off and exception handling mechanisms for mission-critical payment flows, ensuring financial correctness even under partial failures and system inconsistencies.
4-Improved reconciliation efficiency by reducing latency from ~24 hours to ~2 hours, by:
Designing fault-tolerant, high-throughput data pipelines
Optimizing batch processing strategies
Enhancing data access patterns and storage design
Improving overall system architecture for scalability and reliability
5-Ensured audit compliance, data integrity, and operational reliability in large-scale distributed systems handling financial data.

Low-Level DesignHigh-Level DesignSystems DesignJava

Software Engineer

Jun 2021 – Jul 2024 · 3 yrs 1 mo · Noida

1- Worked in Paytm Cashback Points Team which is responsible for handling all the cashback transactions. Designed and developed applications in async manner to afford higher throughput which are working at scale. Actively participated in developing quality code and deploying the updates to application.
2- Migrated Cashback Points System with data records in billions to AWS .
3- Added engineering metrics through prometheus client to grafana dashboards for monitoring health of OTP & Cashback System.
4- Won two ROCKSTAR AWARDS for extraordinary performance in the last two quarters. One for handling all the edge cases in cashback points migration while supporting real-time traffic and another for designing a reward management system to audit merchant wise points issuance and redemption.
Worked in the OTP team which requires a very low latency environment. Developed an otp audit system for tracking user’s otp activities.
5- Worked in a central team of Paytm that manages user’s data. Designed rest APIs to support referral process to onboard new users in paytm.

GitJUnitJavaBack-End Web Development

Asimov robotics

Project Intern

Jun 2020 – Nov 2020 · 5 mos

Built a simulated Autonomous Ground Vehicle capable of navigating on a 2D map in two
modes:
1) Using shortest path from point A to point B avoiding all obstacles
2) Cover every point in the map (without obstacles), similar to a cleaner robot
Additional Tasks:
1. Overhanging table/chair detection using depth/stereo camera
2. Human detection using depth/stereo/thermal camera/Lidar pattern for ensuring safety
before UV sanitisation procedure or for intruder detection in secured facilities
3. QR code based localization
4. A simple GUI (browser based) to select one of the two modes of operation, mark/print if
human detected in camera feed/ lidar pattern

Indian institute of technology (iit) goa

2 roles

Branch Representative Electrical Engineering

Jun 2019 – Aug 2020 · 1 yr 2 mos

Summer Intern

May 2019 – Jun 2019 · 1 mo

Designed a quadrature phase voltage oscillator for Offset phase and Frequency compensation in various applications. We adjusted the QVCO output amplitude using tunable negative gm cell. Such a QVCO can be very useful as a controller for phase interpolation in clock and data recovery circuits to reduce per lane power consumption. Simulated whole circuit in Cadence Virtuoso.