Shubham Tiwari

Software Engineer

Mumbai, Maharashtra, India5 yrs 9 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in microservices architecture and backend development.
Proven track record in blockchain technology implementation.
Strong ability to optimize payment systems and user engagement.

Stackforce AI infers this person is a Backend-focused Blockchain Engineer with expertise in Fintech and SaaS.

Contact

tiwari.23.shubham@gmail.com LinkedIn

Skills

Core Skills

JavaMicroservicesApi DesignBlockchainPayment SystemsFull Stack Development

Other Skills

AlgorithmsAndroidData StructuresEthereumGithubJ2EEJSONJavaScriptKafkaMongoDBNode.jsPayment gatewaysPostmanRedisSmart contracts

About

Experienced Software Developer with 5+ years of expertise in Java, SQL, and modern backend development. Specialized in microservices architecture, subscription systems, and notification systems. Strong background in API design, system integration, and CI/CD deployment. Proficient in blockchain technologies, with a solid foundation in data structures and algorithms. Proven ability to deliver high-quality solutions while fostering team collaboration and innovation. # Skills ● Language: Java, JavaScript ● Databases: MySQL, NoSQL( Mongodb), Postgres ● Frameworks: Spring-boot, Node-JS ● Blockchain Technologies: Ethereum, Solidity, Polygon, NFT, ERC-20, ERC-721, Crypto-Wallets ● Other Technologies: REST API, Redis, Kubernetes, Hyperledger Besu, Kafka Github: https://github.com/Shubham-tiwari123 Email: tiwari.23.shubham@gmail.com

Experience

Zee - technology & innovation

SDE-2

Oct 2022 – Present · 3 yrs 5 mos · Bengaluru, Karnataka, India

● Notification System:
Architected scalable microservices for Email, SMS, and WhatsApp notifications, handling up to 50,000 requests per minute.
Integrated Kafka to handle high volumes of email requests, reducing response time by 30% and improving system scalability.
Collaborated with cross-functional teams to onboard and support multiple groups, offering integration solutions tailored to their needs while ensuring system reliability.
● Payment System:
Engineered an API for attaching subscriptions to users upon successful payments, communicating progress and updates with stakeholders to align the technical implementation with business requirements.
Enhanced error reporting and fallback mechanisms, reducing payment errors from 60% to 5%. Improved user experience, contributing to a smoother app rating on app stores.
Streamlined payment processes by optimizing integration with third-party payment gateways, ensuring smooth transactions and improved customer retention.
● NFT Reward System:
Spearheaded the development of an NFT reward system for ILT-20, working closely with product teams and stakeholders. The system converted 40% of free users into paid users, driving revenue growth and enhancing user engagement.

JavaSpring-bootKafkaAPI designMicroservices

Mzaalo

Software Developer

Apr 2021 – Sep 2022 · 1 yr 5 mos

● Designed a microservice for OTP and password authentication using Redis, which reduced authentication failures by 40%. Collaborated with the security team to integrate and protect user data.
● Architected an automated billing system integrated with multiple payment gateways. Enhanced billing accuracy by 35% and reduced failed transactions by 50%. Coordinated with finance and tech teams to ensure system stability.
● Developed scripts to notify users of their subscription end dates and manage auto-renewals, improving user retention.
● Engineered smart contracts and APIs for NFT projects. Integrated KMS and optimized database queries, boosting transaction efficiency by 25%. Updated stakeholders on project progress.

RedisMicroservicesPayment gatewaysSmart contractsPayment systems

Consenso labs

Blockchain Engineer

Jun 2020 – Apr 2021 · 10 mos · Bengaluru, Karnataka, India

Wrote smart contracts on Ethereum for Signchain, a Digital Signing tool for legal contracts. Used Textile-threadDb, Fleek and Slate for sharing the encrypted file securely.
Wrote smart contracts for handling different functions provided by Arbchain, a DLT based dispute resolution platform.
Worked on Portex, a secure crypto portfolio management and exchange application. Used textile-threadDb and ceramic for making a request from other users, sharing the portfolio.
Developed npm library, wallet-besu to generate user private credentials on the client side. Used this wallet for end-to-end encryption.

EthereumSmart contractsTextile-threadDbBlockchain