Blockchain Developer - Cryptography

Job Title : Senior Python Developer – Product Engineering

Experience : 5 to 8 Years

Location : Pune, India (Hybrid – 3-4 days WFO, 1-2 days WFH)

Employment Type : Full-time

Commitment : Minimum 3 years (with end-of-term bonus)

Openings : 2 positions

• Junior : 3 to 5 Years
• Senior : 5 to 8 Years

Mandatory Skills : Python 3.x, REST APIs, multithreading, Celery, encryption (OpenSSL/cryptography.io), PostgreSQL/Redis, Docker/K8s, secure coding

Nice to Have : Experience with EFSS/DRM/DLP platforms, delta sync, file systems, LDAP/AD/SIEM integrations

🎯 Roles & Responsibilities :

• Design and develop backend services for DRM enforcement, file synchronization, and endpoint telemetry.
• Build scalable Python-based APIs interacting with file systems, agents, and enterprise infra.
• Implement encryption workflows, secure file handling, delta sync, and file versioning.
• Integrate with 3rd-party platforms: LDAP, AD, DLP, CASB, SIEM.
• Collaborate with DevOps to ensure high availability and performance of hybrid deployments.
• Participate in code reviews, architectural discussions, and mentor junior developers.
• Troubleshoot production issues and continuously optimize performance.

✅ Required Skills :

• 5 to 8 years of hands-on experience in Python 3.x development.
• Expertise in REST APIs, Celery, multithreading, and file I/O.
• Proficient in encryption libraries (OpenSSL, cryptography.io) and secure coding.
• Experience with PostgreSQL, Redis, SQLite, and Linux internals.
• Strong command over Docker, Kubernetes, CI/CD, and Git workflows.
• Ability to write clean, testable, and scalable code in production environments.

➕ Preferred Skills :

• Background in DRM, EFSS, DLP, or enterprise security platforms.
• Familiarity with file diffing, watermarking, or agent-based tools.
• Knowledge of compliance frameworks (GDPR, DPDP, RBI-CSF) is a plus.

Backend Developer (Senior Level) (Will also handle CI/CD Tasks) 

Responsibilities: 

● Design and develop robust backend APIs and services using NestJS and Node.js for a 

scalable web3 domain platform. 

● Collaborate closely with cross-functional teams to deliver user-centric backend solutions. 

● Maintain and optimize secure, scalable, and efficient database structures using 

PostgreSQL. 

● Implement and integrate third-party APIs, including blockchain services, oracles, and 

payment gateways. 

● Write clean, maintainable, and testable code adhering to best practices and coding 

standards. 

● Ensure high performance, reliability, and scalability of backend systems. 

● Participate in architecture design discussions, focusing on scalable and maintainable 

system architectures. 

● Implement caching mechanisms to optimize performance and reduce latency. 

● Set up and maintain monitoring tools to track system health, identify bottlenecks, and 

resolve issues. 

● Conduct thorough testing, including unit, integration, and performance tests, to ensure 

code quality. 

● Ensure secure coding practices and implement robust authentication and authorization 

mechanisms (e.g., OAuth2, JWT). 

● Optimize database queries, indexing, and performance for efficient data storage and 

retrieval. 

● Create and maintain clear and comprehensive technical documentation for APIs, system 

designs, and troubleshooting processes. 

● Stay updated on backend and blockchain trends to incorporate innovative solutions. 

Qualifications: 

● 4-6 years of professional backend development experience. 

● Expertise in Node.js and asynchronous programming concepts. 

● Hands-on experience with NestJS. 

● Proficiency in TypeScript and knowledge of modern backend development patterns. 

● Solid understanding of PostgreSQL or other relational databases. 

● Experience with API development, RESTful services, and database design. 

● Familiarity with deploying and maintaining applications on cloud platforms (AWS, Azure, 

or GCP). 

● Familiarity with maintaining CI/CD pipelines, Docker, and Kubernetes, with a focus on 

resolving errors as needed. 

● Strong communication, collaboration, and problem-solving skills.

1. Bachelor’s degree in Computer Science, Engineering, or related field.
2. 3-5 years of professional experience in web development with a strong focus on JavaScript stack technologies.
3. Proven experience in integrating blockchain technology into web applications, with a deep understanding of blockchain protocols, smart contracts, and decentralized applications (dApps).
4. Proficiency in multisignature, multiparty computation and 3rd party Node provider integration
5. Experience with public blockchain platforms such as Bitcoin, Ethereum, etc.
6. Solid understanding of RESTful APIs and web services.
7. Strong problem-solving skills and the ability to troubleshoot complex issues.
8. Excellent communication and collaboration skills.
9. Ability to thrive in a fast-paced, agile environment and adapt to changing priorities.
10. Experience with continuous integration and deployment (CI/CD) pipelines is a plus.
11. Experience in setting up Bitcoin core, and Geth node is a plus

• You're proficient in GoLang with a strong foundation in backend frameworks and databases 
• Knowing Solidity is a definite plus but not a requirement
• You have a passion for writing code as well as understanding and crafting the ways systems interact
• You have experience deploying to and implementing solutions in AWS
• You believe in the benefits of agile processes and shipping code often
• You are pragmatic and work to coalesce requirements into reasonable solutions that provide value

• Deploy well-tested, maintainable and scalable software solutions
• Take end-to-end ownership of the technology stack and product 
• Collaborate with other engineers to architect scalable technical solutions
• Embrace and improve our standards and processes to reduce friction and unlock efficiency

Current Ecosystem : 
ShibaSwap : https://shibaswap.com/#/" target="_blank">https://shibaswap.com/#/

Metaverse : https://shib.io/#/" target="_blank">https://shib.io/#/

NFTs : https://opensea.io/collection/theshiboshis" target="_blank">https://opensea.io/collection/theshiboshis

Game: Shiba Eternity on iOS and Android

About Us

Aura is developing a platform to help companies/communities mint, buy, trade and sell NFTs in the easiest manner possible. Developing a state of the art store front customized to the community and a user friendly interface to unlock the digital growth of companies in the gaming, art, music, etc space by leveraging the power of NFTs. We are assembling a high performing team from the tech ecosystem to build this product and compete with the likes of NBA TopShot.

Requirements

• Integration of user-facing elements developed by a front-end developers with server side logic
• Building reusable code and libraries for future use
• Optimization of the application for maximum speed and scalability
• Implementation of security and data protection
• Design and implementation of data storage solutions

Skills and Qualifications

• 2+ years of experience in Node.js. Basic understanding of front-end technologies and platforms, such as JavaScript, HTML5, and CSS3
• Good understanding of server-side CSS preprocessors, such as LESS and SASS
• Integration of multiple data sources and databases into one system
• Management of hosting environment, including database administration and scaling an application to support load changes
• Understanding differences between multiple delivery platforms such as mobile vs desktop, and optimizing output to match the specific platform
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git
• Proficient understanding of security principles
• Understanding of “session management” in a distributed server environment
• Must have an understanding of SQL and NoSQL databases like Postgres, MySQL, Mongodb etc.
• Must have an understanding of Cloud: AWS or GCP
• Must have a good understanding of data structures and Algorithms

Benefits

• Work on the cutting edge of blockchain technology and the upcoming use-case of NFTs (Non Fungible Token)
• Be a part of an early stage startup with funding from founders of Polygon

• 0-3 application development experience in solution building on Blockchain technology.
• Solid understanding of and experience in blockchain / distributed ledger technologies familiarity with platforms, such as Ethereum and Hyperledger.
• Any additional expertise with Python, containerization (Docker) and additional Cloud exposure also a huge plus
• Security Architecture / Cryptography is a plus.
• Any additional expertise with Python, containerization (Docker) and additional Cloud exposure also a huge plus.
• Experience on development tools such as Hyperledger Fabric/Sawtooth,Geth , Composer, Solidity Remix Functional
• Basic understanding of Web applications architecture and protocols.