Backend Developer

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.

Company Profile 

App Innovation Technologies is leader in Mobile and Web based solutions development. With our extensive knowledge of this industry, our customers receive the edge needed to make their projects a true success. Our team of developers, analysts, designers, testers and project managers will complete projects on time to the agreed specifications with Mobile, Social, Cloud and Analytics’ expertise. 

We also provide a caravan of web-based products and Software services. AIT is a reputed web/Software development company with its headquarters based at Coimbatore, India. We have a creative team of skilled professionals who have in depth knowledge in various technologies including open source technologies and Microsoft technologies to service our valuable clients. Please visit our website https://www.aitechindia.com for more details.

Job Description

We are looking for an iOS developer responsible for the development and maintenance of applications aimed at a range of iOS devices including mobile phones and tablet computers. Your primary focus will be development of iOS applications and their integration with back-end services. You will be working alongside other engineers and developers working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and the creation of quality products is essential.

Responsibilities:

• Design and build applications for the iOS platform

• Ensure the performance, quality, and responsiveness of applications

• Collaborate with a team to define, design, and ship new features

• Identify and correct bottlenecks and fix bugs

• Help maintain code quality, organization, and automatization

Skills 

• Proficient with Objective-C or Swift.

• Familiarity with RESTful APIs to connect iOS applications to back-end services

• Knowledge of other web technologies and UI/UX standards

• Understanding of Apple’s design principles and interface guidelines

• Knowledge of low-level C-based libraries is preferred

• Familiarity with cloud message APIs and push notifications

• Knack for benchmarking and optimization

• Proficient understanding of code versioning tools (such as Git, Mercurial or SVN)

• Familiarity with continuous integration

Education Qualification:

• Undergraduate in Engineering related to Computer Science and Information Technologies and Postgraduate in Computer Science 

• Shouldn’t have Backlog or Arrear.

• Must have completed at least 3 month course. 

• Should be an Analytical thinker and Self Motivator 

About the role: In this role, you will be responsible for the end-to-end development of software solutions related to banking, payments, investments, wallets, and other fintech products. You will work closely with software engineers, test engineers, researchers, designers, and the management team.

You will be responsible for enforcing software development best practices in a fast-paced Agile/DevOps environment, while always focusing on delivering high-value. In the process, you will work with primarily fintech technologies and other distributed systems-related tools,
techniques and methodologies.

If you want to join an early-stage startup that values you and your skills, and gives you the freedom to work at your pace while delivering a fantastic all-in-one financial app for all Indians, this is the perfect role for you.

About us: Mool is an all-in-one financial app where you can save, spend and invest your money with confidence. We understand that everyone deserves a good relationship with their money and growing your wealth should not be a difficult process. To help you gain financial freedom, we bring together champions of the financial service industry to champion you with best-in-class products.

Our ideal candidates will:
• Be highly experienced in Golang. So, if you have at least 1 year of active golang development experience, we want you!
• Have a good understanding of the MVC framework and also proficiency in using advanced JavaScript libraries and frameworks such as ExpressJS, FastifyJS and other backend and frontend frameworks
• Understand and experience with cloud technologies: AWS (Must have) and Azure.
• Be knowledgeable in code versioning tools and dev ops methodologies such as Git.
• Highly experienced with various databases such as MongoDB, PostgreSQL, MYSQL
• Have worked on Relational Database and can figure out where to add Indexes in DB to optimise the performance
• Know how Cache Layer works (e.g. Redis)
• Have experience with queuing services and frameworks such as KafkaRabbit MQ. We prefer it if you have experience with fintech systems and applications
• Expected to have a good understanding of security practices for financial systems.
• Have experience in writing Unit and E2E test cases
• Have experience with Network Security or Ethical Hacking
• Experience with integrating banking APIs

Roles and responsibilities:
• Take an active part in the design process of the architecture of the mobile application
• Maintain quality and ensure responsiveness of applications
• Collaborate with the rest of the engineering team to design and launch new features
• Maintain code integrity and organization
• Working with the design team to convert designs to visual elements
• Implement security and data protection systems and processes to ensure information security compliance
• Oversee full software development lifecycle for the product

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement
• Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience
• Developing ideas for new programs, products, or features by monitoring industry developments and trends
• Recording data and reporting it to proper parties, such as clients or

  • leadership

• Participating in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members
• Taking lead on projects, as

Position : Backend Developer – SDE3 : Java/Nodejs

As part of the engineering team, you would be expected to have deep technology expertise with a passion for building highly scalable products. This is a unique opportunity where you can impact the lives of people across 150+ countries!

Responsibilities

● Own architecture, design, development, and implementation of different modules/features of the services

● Design, develop, deploy and support web applications.

● Bring in industry best practices

● Discover opportunities for performance improvements

● Recommend ways to improve reliability, efficiency and code quality

● Focus on continuous delivery and reducing complexity

● Carry out code reviews and manage pull requests within the mobile application development team

● Build applications based on micro-services architecture

Requirements

● Overall 5+ years of experience in Backend development (Java or Nodejs).

● B.E/B.Tech in CS or equivalent streams from institute of repute (IITs, NITs, BITs, IIITs or equivalent)

● Strong object oriented design skills & knowledge of design patterns

● Experience in working with data platform & data lake pipeline building is preferred.

● Experience designing & developing distributed systems involving multiple web services, databases (both SQL and NoSQL), caches, queues, etc. taking into consideration scalability, availability, fault tolerance, consistency, etc. of the overall system

● Well-aware of and enforces development best practices: Unit Tests, Code Reviews, Integration Tests, CI/CD, Monitoring, Alerting, etc

Job Summary

Require a java developer having 2+ years of experience especially in Spring and Hibernate

Job Type: Full-time
Responsibilities and Duties
Java developer responsibilities include designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
- Contribute in all phases of the development lifecycle
- Write well designed, testable, efficient code
- Ensure designs are in compliance with specifications
- Prepare and produce releases of software components
- Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review
Key Skills
JEE, JPA2 , Hibernate
Required Experience and Qualifications
Proven hands-on Software Development experience
- Proven working experience in Java development
- Hands on experience in designing and developing applications using Java EE platforms
- Object Oriented analysis and design using common design patterns.
- Profound insight of Java and JEE internals (Classloading, Memory Management, Transaction management etc)
- Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
- Experience in the Spring Framework
- Experience in developing web applications using at least one popular web framework (JSF, Wicket, GWT, Spring MVC)
- Experience with test-driven development
Job Type: Full-time