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

About KoinBX
About
KoinBX is India's most trusted and fastest-growing crypto exchange, dedicated to providing a secure, compliant, and user-friendly platform for crypto enthusiasts and traders across India. As the most trusted and fastest-growing crypto exchange, KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos. Our vision is to be the cornerstone of a future where every individual, regardless of background, discovers and harnesses the boundless opportunities of digital assets. KoinBX opens the doors to a future where digital assets play a transformative role in shaping the financial landscape. Our mission is to empower traders by offering a secure and trusted crypto trading platform that is easily accessible to all. We promise to be the gateway ushering in a future of limitless financial possibilities in the realm of digital assets. We provide advanced tools and confidence to navigate the Indian crypto market. We are proud to be 100% compliant with Indian regulations, safeguarding users' funds through robust security measures, including advanced encryption techniques and multi-factor authentication. With over 120 listed cryptos and 150+ active trading pairs, including cryptos like Bitcoin, Ethereum, and Ripple, we provide a comprehensive platform with an intuitive interface, real-time portfolio tracking, and timely price alerts for informed trading decisions. At KoinBX, we offer a wide suite of features designed to meet the diverse needs of both beginner and experienced traders. From instant KYC authentication to low trading fees and high liquidity, our platform is equipped with everything you need to trade cryptos. Join the 5 million+ strong crypto community on KoinBX and begin your crypto journey today. Whether you're a seasoned trader or just getting started, KoinBX is your trusted partner for all your cryptocurrency trading needs.
Candid answers by the company
KoinBX is your gateway to the future of finance, with a user-centric approach, advanced security measures, and an extensive array of cryptos.
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Job Position: Lead II - Software Engineering
Domain: Information technology (IT)
Location: India - Thiruvananthapuram
Salary: Best in Industry
Job Positions: 1
Experience: 8 - 12 Years
Skills: .Net, Sql Azure, Rest Api, Vue.Js
Notice Period: Immediate – 30 Days
Job Summary:
We are looking for a highly skilled Senior .NET Developer with a minimum of 7 years of experience across the full software development lifecycle, including post-live support. The ideal candidate will have a strong background in .NET backend API development, Agile methodologies, and Cloud infrastructure (preferably Azure). You will play a key role in solution design, development, DevOps pipeline enhancement, and mentoring junior engineers.
Key Responsibilities:
- Design, develop, and maintain scalable and secure .NET backend APIs.
- Collaborate with product owners and stakeholders to understand requirements and translate them into technical solutions.
- Lead and contribute to Agile software delivery processes (Scrum, Kanban).
- Develop and improve CI/CD pipelines and support release cadence targets, using Infrastructure as Code tools (e.g., Terraform).
- Provide post-live support, troubleshooting, and issue resolution as part of full lifecycle responsibilities.
- Implement unit and integration testing to ensure code quality and system stability.
- Work closely with DevOps and cloud engineering teams to manage deployments on Azure (Web Apps, Container Apps, Functions, SQL).
- Contribute to front-end components when necessary, leveraging HTML, CSS, and JavaScript UI frameworks.
- Mentor and coach engineers within a co-located or distributed team environment.
- Maintain best practices in code versioning, testing, and documentation.
Mandatory Skills:
- 7+ years of .NET development experience, including API design and development
- Strong experience with Azure Cloud services, including:
- Web/Container Apps
- Azure Functions
- Azure SQL Server
- Solid understanding of Agile development methodologies (Scrum/Kanban)
- Experience in CI/CD pipeline design and implementation
- Proficient in Infrastructure as Code (IaC) – preferably Terraform
- Strong knowledge of RESTful services and JSON-based APIs
- Experience with unit and integration testing techniques
- Source control using Git
- Strong understanding of HTML, CSS, and cross-browser compatibility
Good-to-Have Skills:
- Experience with Kubernetes and Docker
- Knowledge of JavaScript UI frameworks, ideally Vue.js
- Familiarity with JIRA and Agile project tracking tools
- Exposure to Database as a Service (DBaaS) and Platform as a Service (PaaS) concepts
- Experience mentoring or coaching junior developers
- Strong problem-solving and communication skills
Job Description:
As a Backend Developer, you will:
- Implement server-side logic to ensure high performance and responsiveness to requests from the front-end.
- Integrate machine learning models for fraud detection, enhancing the security and reliability of our applications.
- Manage database operations, ensuring the integrity, security, and efficiency of data storage and retrieval.
- Collaborate with cross-functional teams to develop and maintain scalable, robust, and secure applications.
Responsibilities:
- Development of all server-side logic, definition, and maintenance of the central database.
- Ensuring high performance and responsiveness to front-end requests.
- Integrating data storage solutions, including databases, key-value stores, blob stores, etc.
- Implementing security and data protection measures.
- Integrating machine learning models for advanced data processing and analysis.
Key Performance Indicators (KPI) For Role:
- Quality and efficiency of backend systems developed.
- Effectiveness in integrating and deploying machine learning models.
- Database performance and security measures.
- Positive feedback from team members and stakeholders.
- Adherence to coding standards and best practices in backend development.
Prior Experience Required:
- Minimum 3+ years of backend development experience.
- Proficient in Node.js or Python (especially Django and Flask frameworks), or/and Go.
- Strong database management skills with both SQL and NoSQL databases.
- Experience in integrating and deploying machine learning models for real-world applications, specifically for fraud detection is highly desirable.
- Familiarity with RESTful API development and microservices architecture.
- Good understanding of asynchronous programming and its workarounds.
- Experience with cloud services (AWS, Azure, GCP) and serverless architectures.
Location:
Hyderabad
Collaboration:
The role involves close collaboration with frontend developers, data scientists, and project managers to ensure the seamless integration of backend services with front-end applications and data analytics models.
Salary:
Competitive, based on experience and market standards.
Education:
- Bachelor's degree in Computer Science, Information Technology, or a related field.
Language Skills:
- Strong command of Business English, both verbal and written, is required.
Other Skills Required:
- Strong analytical and problem-solving skills.
- Proficient understanding of code versioning tools, such as Git.
- Ability to design and implement low-latency, high-availability, and performant applications.
- Knowledge of security compliance and integrated security protocols.
- Familiarity with continuous integration and continuous deployment (CI/CD) pipelines.
- Experience with containerization technologies (Docker, Kubernetes) is a plus.
Other Requirements:
- Proven ability to work in a fast-paced, agile development environment.
- Demonstrated ability to manage multiple projects simultaneously and meet deadlines.
- A portfolio showcasing successful backend projects.
About the Company
F22 Labs is a startup software studio based in Chennai. We power startups worldwide by building high-quality software products. From web apps to mobile platforms, we help entrepreneurs turn their ideas into beautifully crafted solutions. If you're passionate about software development and eager to build real products that solve real problems, you’ll fit right in.
Position Overview
We are seeking a talented and experienced Senior Node.js Developer to join our growing engineering team. In this role, you will be instrumental in designing, developing, and maintaining the backbone of our applications. You'll leverage your 3-5 years of expertise to build robust, scalable, and high-performance backend services and APIs. You will also play a key role in making architectural decisions, mentoring junior developers, and driving best practices within the team. If you're eager to tackle complex problems, contribute to innovative projects, and lead by example, this position is for you.
Key Responsibilities
● Design, develop, test, deploy, and maintain highly scalable and reliable backend services, APIs, and systems using Node.js (with frameworks like Express.js or NestJS) and TypeScript.
● Architect and implement robust solutions for complex business requirements, ensuring code quality, performance, and security.
● Collaborate closely with cross-functional teams including front-end developers, product managers, QA engineers, and designers to deliver high-quality products.
● Lead and participate in code reviews, providing constructive feedback to ensure adherence to coding standards and best practices.
● Design and manage database schemas (SQL and NoSQL, e.g., PostgreSQL, MongoDB, Redis) and optimize database queries for performance.
● Develop and maintain comprehensive unit, integration, and E2E tests to ensure software quality and reliability.
● Work with containerization technologies like Docker and orchestration tools like Kubernetes for deploying and managing applications.
● Implement and maintain CI/CD pipelines for automated building, testing, and deployment of applications.
● Mentor and guide junior developers, fostering a culture of learning and continuous improvement.
● Troubleshoot, debug, and upgrade existing software, identifying and resolving performance bottlenecks.
● Stay up-to-date with emerging technologies, industry trends, and best practices in Node.js development and backend architecture.
● Contribute to architectural discussions and decisions, helping to shape the future of our backend systems.
Qualifications and Requirements
● 3-5 years of professional experience in backend development with a strong focus on Node.js.
● Expert proficiency in TypeScript.
● Proven experience with Node.js frameworks such as Express.js or NestJS (highly preferred).
● Strong understanding of asynchronous programming, event-driven architecture, and design patterns.
● Solid experience in designing, building, and consuming RESTful APIs; experience with GraphQL is a plus.
● Proficiency with both SQL (e.g., PostgreSQL, MySQL) and NoSQL (e.g., MongoDB, Redis) database technologies, including data modeling and query optimization.
● Hands-on experience with containerization technologies (Docker) and a good understanding of container orchestration (Kubernetes).
● Experience with CI/CD tools and practices (e.g., Jenkins, GitLab CI, GitHub Actions).
● Experience deploying and managing applications on cloud platforms (AWS, Azure, or GCP), including familiarity with relevant services (e.g., EC2, S3, Lambda, RDS).
● Strong problem-solving, analytical, and critical thinking skills.
● Excellent communication and collaboration skills, with the ability to work effectively in a team environment.
● Proven ability to mentor junior team members.
● Familiarity with Git and collaborative development workflows.
Good to have:
● Experience with testing frameworks (e.g., Jest, Mocha, Chai) and a commitment to writing well-tested code.
● Experience with microservices architecture and distributed systems.
● Experience with serverless architecture (e.g., AWS Lambda, Azure Functions).
● Knowledge of message queue systems (e.g., Kafka, RabbitMQ, AWS SQS).
● Familiarity with Infrastructure as Code (IaC) tools like Terraform or CloudFormation.
● Understanding of front-end technologies (e.g., React, Angular, Vue.js) to facilitate better collaboration.
● Experience with performance monitoring and optimization tools.
● Active contributions to open-source projects or a strong portfolio of personal projects.
Why Join Us (Perks & Benefits)
● Flexible work timings.
● Fast-paced, hands-on learning environment.
● Fun, collaborative, and supportive team culture.
● Real-world impact from day one.
If you're looking to supercharge your development skills and work on meaningful software in a startup that values learning and creativity, we’d love to hear from you. Apply today!
1. Ability to work in a fast-paced environment with minimal supervision
2. Experience in Agile development using JIRA, GIT, Confluence.
3. 3+ years of Experience in node.js + Express.
4. Experience in profiling, debugging & troubleshooting Node.js processes.
5. Strong Experience as a backend developer for REST API design.
6. Strong knowledge of SQL/NoSQLdatabases like PostgreSQL / MySQL or MongoDB
7. Understanding accessibility and security compliance
8. Understanding fundamental design principles behind a scalable application.
9. User authentication and authorization between multiple systems, servers, and
environments.
Must Haves
- Programming experience with at least one modern language such as Java, C++, or C# including object-oriented design
- 1+ years of experience contributing to the architecture and design (architecture, design patterns, reliability, and scaling) of new and current systems.
- 4+ years’ work experience in software development
- BS degree or higher in Computer Science, Engineering or related field
- Understanding of operating system fundamentals (Linux)
- Understanding of scalable computing systems, software architecture, data structures, and algorithms
- Knowledge of professional software engineering best practices for the full software development life cycle
- Strong verbal and written communication skills
- Strong analytical skills, with excellent problem solving abilities
- Working experience with Kubernetes
- Experienced working with distributed databases at scale
Good to haves
- Experience in developing software using AWS native services & technologies.
- Experience taking a lead role in building and operating scalable distributed systems
- Experience in Agile/SCRUM enterprise-scale software development
- Familiar with building secure software using modern security principles
- Demonstrated ability to achieve goals in a highly innovative and fast-paced environment
Why us
We're hiring a set of highly skilled, enthusiastic, and passionate people who thrive in a high-growth environment. We believe the best way to grow is to give everyone the opportunity to pursue their interests. At Lucidity, you have complete freedom to work on projects that interest you. Plus, with benefits like flexible hours, company offsites, unlimited leaves, we ensure you enjoy the journey as much as we do. We are also offering healthy founding team ESOP's.
A backend developer works alongside front-end developers, full stack developers, programmers or UX specialists to create comprehensive digital solutions for business needs. They make sure the website is scalable and that it can still function when hit by large loads—be that traffic or demanding scripts. They are also tasked with
maintaining and testing existing back-end elements to ensure they’re as fast and efficient as possible. Data storage also comes under their remit, which requires them to have a good knowledge of data security and compliance.
Duties and responsibilities:
• Analyses, designs, develops, and codes REST API using NodeJS more programming languages, Web and Rich Internet Applications.
• Supports applications with an understanding of system integration, test planning, scripting, and troubleshooting.
• Assesses the health and performance of software applications and databases.
• Establishes, participates, and maintains relationships with business units, customers and subject matter experts to remain apprised of direction, project status, architectural and technology trends, risks, and functional/integration issues.
• Defines specifications and develop programs, modifies existing programs, prepares test data, and prepares functional specifications.
• Analyses program and application performance using various programming languages, tools and techniques.
• Manage staff of 2-3 & manage microservices of software most effectively and efficiently.
• Reviews project proposals evaluate alternatives, provides estimates and makes recommendations.
• Designs and defines specifications for systems.
• Identifies potential process improvement areas and suggests options and recommends approaches
System Design Concepts:
- Scaling
- API Gateway
- Microservices
- Message Queue
Qualifications:
Graduation - B. Com + IT Certification/ B.Sc. - IT / B.Sc. Comp Sc./ B.Sc. IT/ BE-IT/ BE-Comps
Technical Skills:
Oracle, SQL, Java, Node JS, REST API Debugging.
Soft Skills:
Client Management; Good interpersonal skills; Good Communication
- Atleast 1 year of experience in frappe framework preferred.
- Experiece with python and javascript required.
Job Description
- Contribute in all phases of the development lifecycle
- Understand/learn the existing applications
- Provide support on IT Applications to customers
- Prepare and produce build release
- Strive for continuous improvement, developing well designed and efficient code
- Keep up with changes in technology and propose solutions
- Ensure defect free deliveries by actively participating in quality assurance
Education & Job Qualification
- Good academic qualifications
- Experience in developing web applications using Java, Spring, Hibernate, DWR, JSP
- Knowledge in Oracle Database concepts
- Sound knowledge in the following is a must
o Hibernate
o Spring
o Oracle & MongoDb
o HTML & CSS
o Javascript
o Jquery
o Angular 4
o Node JS
Knowledge of Japer Reports will be an added advantage - Good communication skills and be a good listener
- Problem solving skills
- Willingness to learn and do all development activities including quality assurance
- Team player








