Full Stack Developer – Backend Focus (Java Spring Boot + Kafka)

Job Title : Full Stack TypeScript Developer (Web3)

Location : Remote

Experience Level : 3+ Years

Role Overview :

Join our innovative, funded Web3 startup as a Full Stack TypeScript Developer and play a key role in building a wallet-to-wallet audio calling platform. You’ll collaborate with cross-functional teams to deliver a seamless user experience by integrating real-time communication, blockchain payments, and advanced analytics into our platform.

Key Responsibilities:

Development & Blockchain Integration :

• Design and develop a responsive React + TypeScript frontend using Vite.
• Build a scalable TypeScript, Express.js backend to manage wallets and on-chain transactions.
• Integrate wallet connection frameworks like RainbowKit and Wagmi.
• Implement blockchain payment systems using Superfluid Finance and on-chain revenue sharing with 0xSplits.

Real-Time Communication :

• Develop and optimize real-time audio streaming for calls and Spaces using Jitsi or 100ms.
• Ensure low-latency performance, scalability, and smooth user interactions for high-concurrency scenarios.

Data Management & Analytics :

• Manage relational data with Drizzle ORM and Neon Postgres.
• Develop analytics features using The Graph or custom indexers to query blockchain data effectively.

Collaboration & Documentation :

• Collaborate closely with product, design, and blockchain teams to align on technical solutions and goals.
• Document APIs, workflows, and architectural decisions to ensure clarity and smooth handoffs.

Required Skills:

• Strong proficiency in React, TypeScript, and Express.js.
• Hands-on experience with blockchain tools such as ethers.js, Superfluid, 0xSplits, and The Graph.
• Familiarity with real-time audio communication systems like Jitsi or 100ms.
• Expertise in relational databases like Postgres and scalable storage solutions.
• Excellent debugging, optimization, and problem-solving skills.

Preferred Qualifications:

• Prior experience in Web3 or blockchain-based applications.
• Knowledge of decentralized systems and protocols.
• Understanding of agile development processes and CI/CD pipelines.
• Strong attention to detail with the ability to write clean, maintainable code.

What We Offer:

• A chance to work at the forefront of Web3 innovation.
• Fully remote, flexible work environment.
• Competitive salary and equity options.
• Opportunity to make a significant impact in a growing startup.

1. Develop and maintain custom modules, workflows, and scripts within the LOANIQ platform.
2. Build Java-based interfaces and services to integrate LOANIQ with other banking applications (core banking, risk systems, reporting, etc.).
3. Analyze business requirements and translate them into technical specifications and design documents.
4. Enhance existing LOANIQ functionality to meet evolving regulatory and business requirements.
5. Perform code reviews, unit testing, and ensure CI/CD compliance for releases.
6. Collaborate with cross-functional teams including BA, QA, Infrastructure, and Support to deliver projects on time.
7. Support production environments, investigate issues, and provide long-term solutions.
8. Act as a technical SME on LOANIQ-related queries and mentor junior developers when needed.

Job Overview:

We are looking for a highly skilled Full-Stack Developer with expertise in .NET Core, to develop and maintain scalable web applications and microservices. The ideal candidate will have strong problem-solving skills, experience in modern software development, and a passion for creating robust, high-performance applications.

Key Responsibilities:

Backend Development:

• Design, develop, and maintain microservices and APIs using.NET Core. Should have a good understanding of .NET Framework.
• Implement RESTful APIs, ensuring high performance and security.
• Optimize database queries and design schemas for SQL Server / Snowflake / MongoDB.

Software Architecture & DevOps:

• Design and implement scalable microservices architecture.
• Work with Docker, Kubernetes, and CI/CD pipelines for deployment and automation.
• Ensure best practices in security, scalability, and performance.

Collaboration & Agile Development:

• Work closely with UI/UX designers, backend engineers, and product managers.
• Participate in Agile/Scrum ceremonies, code reviews, and knowledge-sharing sessions.
• Write clean, maintainable, and well-documented code.

Required Skills & Qualifications:

• 7+ years of experience as a Full-Stack Developer.
• Strong experience in .NET Core, C#.
• Proficiency in React.js, JavaScript (ES6+), TypeScript.
• Experience with RESTful APIs, Microservices architecture.
• Knowledge of SQL / NoSQL databases (SQL Server, Snowflake, MongoDB).
• Experience with Git, CI/CD pipelines, Docker, and Kubernetes.
• Familiarity with Cloud services (Azure, AWS, or GCP) is a plus.
• Strong debugging and troubleshooting skills.

Nice-to-Have:

• Experience with GraphQL, gRPC, WebSockets.
• Exposure to serverless architecture and cloud-based solutions.
• Knowledge of authentication/authorization frameworks (OAuth, JWT, Identity Server).
• Experience with unit testing and integration testing.

Responsibilities: 

• Develop and maintain high-quality, efficient, and scalable backend applications. 
• Participate in all phases of the software development lifecycle (SDLC) 
• Write clean, well-documented, and testable code adhering to best practices. 
• Collaborate with team members to ensure the successful delivery of projects. 
• Debug and troubleshoot complex technical problems. 
• Identify and implement performance optimizations. 
• Participate in code reviews 
• Hands-on experience with Springboot, Java 8 and above. 
• 2-5 years of experience developing Java applications. 
• Knowledge about at least one messaging system like Kafka, RabbitMQ etc. 
• Required React developer requirements, qualifications & skills: 
• Proficiency in React.js and its core principles 
• Strong JavaScript, HTML5, and CSS3 skills 
• Experience with popular React.js workflows (such as Redux) 
• Strong understanding of object-oriented programming (OOP) principles. 
• Experience with design patterns and best practices for Java development. 
• Proficient in unit testing frameworks (e.g., JUnit). 
• Experience with build automation tools (e.g., Maven, Gradle). 
• Experience with version control systems (e.g., Git). 
• Experience with one of these databases – Postgres, MongoDb, Cassandra 
• Knowledge on Retail or OMS is a plus. 
• Experienced in containerized deployments using Docker, Kubernetes and DevOps mindset 
• Ability to reverse engineer existing/legacy and document findings on confluence. 
• Create automated tests for unit, integration, regression, performance, and functional testing, to meet established expectations and acceptance criteria. 
• Document APIs using Lowe’s established tooling. 

As a Staff Full-stack engineer, you will work across the Acceldata platform products. We’re looking for people with a strong background or inclination towards data engineering and systems; you’re comfortable in dealing with lots of moving pieces and can work at the  intersection of Databases, API's and Frontends

You will:          

• Be actively involved in strategic direction and product decisions.
• Design, build and maintain APIs, user-facing experiences, and services.
• Work closely with our customers and sales teams on a regular basis to carve out new features and use cases
• Work with MVC frameworks such as React or Angular 
• Work with database systems, RDBMS, Mongo, Elastic Search.
• Develop shared front-end components (JavaScript & CSS) for use across all of our products, enabling other UI engineers to build better products faster.

You need:      

• 8+ years of significant of web-application development experience in one or more JS frameworks. You care about building better products.
• Strong Computer Science fundamentals in data structures, algorithm design, and problem-solving.
• You're as comfortable writing plain JavaScript as working with modern frameworks like Angular. You've built your own controls and widgets in JavaScript. 
• You write unit tests for your JavaScript (really, you do). You've probably used Node. You have built complex JS web applications.
• Organized, thorough, and detail-oriented 

Good to have:

• Contribution to open-source projects.
• Background in enterprise software
• JVM performance tuning and debugging

Expi with Node.js, Express, Feather JS
3rd party API integration knowledge
Database- MySql or NoSql

Kafka Client Integration with Nodejs

Redis integration using Nodejs

Must skills:

Hands- on in the following:

• Java 8/J2EE
• Spring boot
• Gradle/Maven
• REST API
• ORM- hibernate/ JPA
• Unit Testing and Integration Testing- Junit/ TestNG

Good to have:

Hands-on in the following:

• CI/CD pipeline deployment
• Messaging- ActiveMQ/RabbitMQ/MQ
• DB2
• Kafka
• NoSQL framework exposure

gingerCube Inc., based in Dallas, USA, provides a software platform to interface with hospitals, physician groups, resident programs, and billing services, improving revenue cycle and reducing time to bill by up to 85%. Our flagship product, maxRVU has been adopted by physician groups, hospitals and revenue cycle companies across the US. Over the past 6 years, we have developed a solid brand and continue to grow swiftly with top healthcare systems.

To meet rapid expansion, we are looking to hire a full-time Lead Engineer to join our growing team in Mumbai to build our products using Ruby on Rails. As our Lead Engineer, you will be responsible for creating innovative solutions to technical problems and deliver a top-notch user-experience to our enterprise customers. You must be highly motivated, lead by example and have a knack for designing optimized solutions.

You will report to the Director of Product Delivery and work at our office at a fun and open co-working space. Our startup-like environment means nothing holds you back from doing your best and chart your own growth path. You'll be able to see the impact of your work immediately, experience various aspects of the business, and hear from clients how your efforts benefit them directly.

Requirements:

• Bachelor's degree in a related area and 4 to 6 years of experience in the field
• Full stack with Ruby on Rails, HTML, CSS, and JavaScript.
• Familiarity with ruby gems and Github.
• Expertise of diverse technology stacks
• An understanding of sound database design principles and performance optimization
• Experience integrating with REST API’s
• Skilled with debugging tools, test harnesses, and performance tuning
• Expert with multi-tenant systems, secure coding practices, and authentication/authorization
• Expert in Ruby with a distinguished track record of solving challenging and complex problems efficiently
• Excellent knowledge of standard concepts, practices, and procedures within a particular field
• Enable RoR web applications on Heroku with Postgres
• Ability to take ownership of work and respond to critical issues quickly and work with the team.
• Plus: Software security practices for patient records(HIPAA), PCI, etc. and exposure to the healthcare industry.

Java, JEE, RESTful web service, Spring Boot/MVC, Hibernate,Angular/Angular js

• Has worked on Platform Modernization Project
• Troubleshoot and fix defects for planned releases and production issues
• Should have experience working in Development Project
• Should be result-oriented
• Should be able to work both independently and in teams
• Should have ability to multi-task and prioritize across multiple projects
• Should be flexible with work timings