We are looking for a highly capable https://www.linkedin.com/feed/hashtag/?keywords=node&highlightedUpdateUrns=urn%3Ali%3Aactivity%3A6854010812688846849">Node.js https://www.linkedin.com/feed/hashtag/?keywords=developer&highlightedUpdateUrns=urn%3Ali%3Aactivity%3A6854010812688846849">Developer as part of our backend team for a mobile application.
You will be collaborating with our android developers, front-end application developers, designing back-end components, and integrating data storage and protection solutions.
To ensure success as a Node.js developer, you should possess extensive knowledge of Node.Js based services and experience in a similar role. An accomplished Node.js developer will be someone whose expertise results in the stable, fast, and secure exchange of data between servers and end-users.
Roles & Requirements:
Minimum 3 years of coding experience with Node.js.
Knowledge and understanding of Request, Response, and proficiency in REST-ful APIs.
Implementation of security like OAuth 2.0, OAuth 1.0, JWT, Basic Auth, and data protection.
Integration & Design of data storage solutions like MySQL, MongoDB,
Design, build and configure applications to meet business process and application requirements.
Extensive experience in using tools like Jenkins/ Git/ AWS Cloud.
Experience in writing Unit Tests and Test Frameworks.
Experience with Agile Development Model.
Developing and maintaining all server-side network components.
Ensuring optimal performance of the central database and responsiveness to front-end requests.
Collaborating with front-end developers on the integration of elements.
Extensive knowledge of JavaScript, web stacks, libraries, and frameworks
Developing high-performance applications by writing testable, reusable, and efficient code.
Implementing effective security protocols, data protection measures, and storage solutions.
Running diagnostic tests, repairing defects, and providing technical support.
Documenting Node.js processes, including database schemas, as well as preparing reports.
Recommending and implementing improvements to processes and technologies.
Thanks & Regards!

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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.


About us:
HappyFox is a software-as-a-service (SaaS) support platform. We offer an enterprise-grade help desk ticketing system and intuitively designed live chat software.
We serve over 12,000 companies in 70+ countries. HappyFox is used by companies that span across education, media, e-commerce, retail, information technology, manufacturing, non-profit, government and many other verticals that have an internal or external support function.
To know more, Visit! https://www.happyfox.com/
We’re looking for a Senior Backend Engineer to join our engineering team to help build and maintain our growing list of products. You should have prior experience being responsible for building sufficiently complex features by yourself.
Responsibilities:
- Implement product features by writing clean, robust, reusable code with tests
- Conduct peer reviews to keep the codebase a great environment to work on
- Collaborate with Product Managers, Designers and Engineers to deliver high-quality features
- Bring new ideas and best practices to improve the team and the codebase
Requirements:
- 5+ years of professional work experience
- Proficiency in backend programming languages like Python
- Experience working with web application frameworks like Django
- Experience in building web services using relational databases like PostgreSQL or NoSQL databases like MongoDB
- Proficiency in writing highly performant and scalable code
- Experience in building REST APIs and a good understanding of best practices around building APIs
- Good communication skills with an ability to articulate your views
- Excellent analytical and problem-solving skills
JOB DESCRIPTION
Nature of Work:
This being an advanced level position in the S/W development team the individual is expected to:
∙ Participate as a team member in all phases of the S/W lifecycle, including the analysis and design of S/W systems.
∙ Participate in a detailed level of coding, code walk – through and unit testing of S/W modules.
∙ Participate in integrated testing of product/ package.
∙ Participate in difficult and typical coding assignments with responsibility of a small module consisting of 3 – 5 members.
∙ Participate in exploration/ feasibility study of products.
∙ Have a thorough understanding of the assigned product/ project.
∙ Participate in generating technical documentation of products/ packages.
∙ Providing technical training to the juniors.
∙ Manage allocated resources, keep compliance with discipline and decorum of the organization.
∙ Keep compliance with Systems and Procedures.∙ Thorough knowledge of current technological trends in Web based Software
∙ Strong Working knowledge of JSF/JSP, Servlets, Spring, Web application development and Core Java
• Working knowledge of working with databases using EJB.
• Knowledge of Bug Tracking tool such as Jira, Bugzilla and source code version control systems (SVN, GIT)
• Knowledge of working in Scrum methodology.
• Good to have knowledge of SonarQube and Web Security Aspects.
• Knowledge of Responsive Front End Development using HTML5, JavaScript, CSS3, JQuery, Ajax and JSON.
• Should be able to write test cases for the feature.
∙ Ability to gather and analyze data & draw logical conclusions
∙ Understanding of company’s vision & goals, business operations∙ Clear and concise oral and written communication skills
∙ Ability to establish and maintain effective work relationships at
all levels
∙ Great passion for S/W development.
∙ Ability to mentor and guide the juniors.

- Deliver features in an end-to-end manner: technical design, development, testing, deployment, and maintenance.
- Provide technical leadership and own specific areas of the platform.
- Work closely with Product Managers to translate product requirements to engineering specifications.
- Lead code review efforts and quality efforts in your area of ownership.
- Participate in product discussions, taking ownership and initiative.
- Work independently in a fast-paced environment.
- Mentored and guide junior engineers.
Must Haves:
- Minimum 2 years of working experience in Ruby on Rails/ Python/ Node.JS.
- Strong problem-solving skills, data structures, and algorithms.
- Excellent experience on databases like MySQL, PostgreSQL, etc.
- Familiarity with tools for code reviews, version control (GIT).
- A knack for writing clean, readable Ruby/ Python/Node.JS code.
- Experience in application server hosting and monitoring.
- Understanding of fundamental design principles behind a scalable application.
Nice to Have:
- Hands-on with search platforms (Solr, Elasticsearch, etc).
- Prior experience with microservices-based architecture/SOA/distributed systems.
- Able to implement automated testing platforms and unit tests.
- Experience with common AWS service EC2, RDS, S3, SES, etc.
Key Competencies:
- Building Effective Team
- Solving Problems Creatively
- Learning Agility
- Drive For Result



Experience: 9 to 16 Yrs
Notice Period: Immediate to 15 days
Job Description:
- The Lead Engineer is responsible for deriving the technical architecture, detailed design, implementation, Performance, and Scalability of the developed system.
- The individual should be capable of single-handedly understanding the requirement, liaison with the product owner and external teams; produce the technical output required.
- Strong Leadership skills to contradict, produce a new design to current trends is required.
- Should be an avid technology enthusiast with strong views on technical architecture.
Technical Skills:
1) Strong Python and Mongo DB is mandatory
2) Web Application Architecture - One Large Project Experience of Development & Maintenance
3) Knowledge in one or more frameworks like WSGI(uwsgi), Django, Flask, Web Application development
4) Exposure to Databases like MongoDB, BigQuery, Elastic Search, Redis, etc.,
5) Knowledge of Code Quality Process and Discipline (Git, Jenkins, etc)
Role:
- Design and Develop scalable high performance server applications
- Contribute towards scalable Design / Architecture for various modules / complete application
- Deliver high quality, robust, bug free code
Details
- Location – Pune
- Reporting to – CEO
- Team – To be built
This is what you will do
- Interface with the QA teams to ensure that the product meets desired quality standards
- Strong individual contributor who can develops excellent application without much supervision
- Excellent team player who can collaborate with other engineers to ship quality product in timely manner
- Assist Engineers in estimating effort, assigning tasks to engineers and tracking deliverables
- Research on new technologies, libraries and frameworks as per project needs
- Help maintain code quality, follow coding standards and guidelines
- Communicate on assignment progress / completion on a frequent basis
Educational Background:
- Engineering Graduate / Post Graduate Degree holder / MCA
Professional Experience:
- 4 – 7 Years of software development experience using Java/J2EE
Tech Skills
- Have very good hands on experience of Core Java, Spring, Hibernate and related JEE technologies
- Have good understanding of data structure and algorithms
- Good in programming fundamentals
- Basic understanding of HTML, CSS, JavaScript, Web technologies
- Basic understanding of RDBMS concepts, preferably using MySQL
- Good understanding of client-server architecture and multi-threading
- Knowledge of Web Services, XML and socket programming is plus
- Have very strong problem-solving skills
Other Skills
- Good listener
- Confident approach
- Strong problem-solving skill
- Highly proficient with MS Office
- Ability to structure processes and lay down the foundation for a department
Personality and attitude traits
- Passionate about work – We like people who like to work, and want their work to mean something
- Self-starter and motivator – We do not believe in monitoring or tracking team members
- Eager and quick to learn – If you are not excited to learn new things, then tech companies are not for you
- Individual contributor – We are a small team, and everyone has hands on contribution
- Start-up savvy



