SDE 2 - Backend

Associate Technical Architect / Senior Software Developer – Java, J2EE, Spring Boot, AWS

At Quantiphi, you will leverage your expertise in Java, Spring Boot, and AWS to develop, modernize, and enhance enterprise applications. The role involves supporting Java application modernization initiatives, designing scalable cloud-native solutions, and delivering high-quality software for enterprise customers.

• Experience in Java application modernization, including upgrading legacy applications to newer Java LTS versions (Java 17/21/25), is preferred.
• Must have experience in developing enterprise-level software and web applications using J2EE/Spring Boot.
• Experience in API integration, application deployment, cloud architecture, and application security.
• Well-experienced in working with tools like Git, Maven, JFrog.
• Should have a solid understanding of Object-Oriented Programming (OOP).
• Well-experienced to perform Unit Testing and Integration Testing and have good experience in Agile-based development approach.
• Expertise in developing enterprise-level web applications and REST and SOAP APIs using Microservices, with demonstrable production-scale experience.
• Working knowledge of SQL or NoSQL databases.
• Understand Architecture Requirements and ensure effective design, development, validation, and support activities with strong problem-solving ability.
• Understanding of core AWS services, uses, and basic AWS architecture best practices.
• Exposure to AWS Transform Custom (ATX) or similar automated code modernization tools is an added advantage.
• Proficiency in developing, deploying, and debugging cloud-based applications using AWS.
• Ability to use the AWS service APIs, AWS CLI, and SDKs to write applications.
• Ability to identify key features of AWS services.
• Experience in developing enterprise web applications using Angular, TypeScript, and REST API integration.
• Identify bottlenecks and bugs, and recommend solutions by comparing the advantages and disadvantages of custom development.
• Should contribute to team meetings, troubleshooting development and production problems across multiple environments and operating platforms.
• Execute strong collaboration and communication skills within distributed project teams, with the ability to prioritize and multitask.

ROLE & RESPONSIBILITIES

• Associate Technical Architect will be responsible for connecting with clients for project briefing, consultation, installation, and close-out reviews.
• Support the design, development, enhancement, and modernization of enterprise Java applications, collaborating with clients and internal teams to deliver high-quality software solutions.
• Help out in managing customer demands to ensure maximum satisfaction and to maintain quality.
• Engage in the negotiation of customer job demands and specifications as regards to resources and infrastructure, and assist in creating comprehensive technical documents.
• Supervise activities between internal and external resources, and facilitate smooth workflow for service delivery.
• Evaluate project data for accuracy, and take the lead in setting project targets and priorities. Give training and mentorship to team members to make them better on the job.
• Be up to date with current field practices to enhance service standards and delivery.
• Review customer technical demands and instructions and assist the internal team and customers to identify the best order for lifts and the most efficient methods of maintaining and using delivered materials.
• Remain knowledgeable about current technology and carry out research to identify new trends that can be used to achieve maximum results.
• Carry out other technical-related duties that may be required. Be abreast of the best coding and architecting practices, ensuring the APIs are robust and easy to maintain, and coordinate with the rest of the team working on different layers of the infrastructure.

• Proficient knowledge of Django and Django REST framework 
• Experience and good understanding of Redis
• Good knowledge and understanding of PostgreSQL or other relational databases 
• Proficient in NoSQL document databases especially MongoDB. 
• Understanding of threading and multiprocessing in Python, and multi-process architecture 
• Good-enough understanding of version control systems like Git or Mercurial 
• Strong unit-test and debugging skills 
• Knowledge of container technologies (specially Docker) and orchestration systems is a plus 
• Strong understanding of various Python Libraries, APIs, and toolkits
• Excellent understanding of MVC and OOP
• Rapid prototyping skills for getting product feedback 
• Experience with Agile and SCRUM methodology

Context for the Candidates:

Blockchain engineers are tasked with building secure, scalable, and high-performance decentralized applications. This discussion focuses on how to utilize key technologies—Node.js, Rust, Go, TypeScript, Ethers.js, viem, and Hardhat—in smart contract and blockchain system development, while addressing the practical challenges that arise in such projects.

Key Discussion Points:

• How do you integrate Node.js, Rust, Go, and TypeScript in blockchain-backed applications?

• Discuss the trade-offs between using Rust or Go for performance-critical blockchain services.

• What are the key challenges in ensuring the security and scalability of smart contracts using tools like Ethers.js, viem, and Hardhat?

• How do you approach testing, debugging, and deploying smart contracts in a decentralized environment?

• Share best practices for gas optimization, contract upgradability, and backend scalability.

Evaluation Criteria:

1. Technical Knowledge:

• Strong knowledge of Node.js, Rust, Go, and TypeScript with practical experience in blockchain development.

• Proficiency in Ethers.js, viem, Hardhat, and smart contract lifecycle (development, testing, deployment).

• Understanding of security best practices, performance optimizations, and scalability in decentralized systems.

2. Problem-Solving and Integration Skills:

• How candidates approach integrating smart contract solutions with backend services using Node.js, Rust, Go, and TypeScript.

• Solutions proposed for common challenges in blockchain projects such as gas fees, security vulnerabilities, and system bottlenecks.

3. Experience and Expertise:

• Minimum of 2 years of IT experience, including hands-on development with the specified technologies.

• Practical knowledge of blockchain architecture, consensus mechanisms, and decentralized application deployment.

4. Innovation and Critical Thinking:

• Candidates’ ability to think creatively about system architecture, proposing scalable and secure solutions for blockchain-based applications.

• Discussion on the future potential of blockchain technology and how the tech stack can evolve.

5. Communication and Team Collaboration:

• Clear articulation of technical challenges and how to address them in a team setting.

• Ability to lead or contribute to discussions in a way that encourages collaboration and team-driven problem-solving.

Responsibilities:

• The candidate will get an opportunity to work on AI/ML technologies using NodeJS for web applications.
• Deliver high-quality code in a fast-paced customer-facing product.
• Specify, design, and implement the functionality and behaviors of the web infrastructure.
• Be involved in the full life-cycle of development from concept through integration, test, and high web traffic deployments.
• Interface with the firmware team as well as clients and end-users of the products.
• API development using REST JSON/XML, and security standards like OAuth.

Requirements:

• BTech or MTech in Computer Engineering, Computer Science, or other similar majors.
• Experience building products with full-stack technologies, and an excellent understanding of computer science fundamentals, data structures, and algorithms.
• Must have experience in version control systems like GIT.
• Strong in NodeJS, MySQL, MongoDB, Kafka, Elasticsearch.