Full-Stack Java Developer

A full stack developer job description for MERN stack developers centers on designing, developing, and maintaining robust web applications using MongoDB, Express.js, React, and Node.js as core technologies.

Responsibilities

• Develop and maintain scalable web applications using the MERN stack.
• Build interactive and responsive user interfaces with React.
• Implement server-side APIs and business logic using Node.js and Express.js.
• Design, model, and manage databases with MongoDB to ensure efficient data storage and retrieval.
• Integrate front-end with back-end systems and third-party services.
• Optimize applications for speed and scalability, troubleshoot and debug code, and ensure reliability.
• Collaborate with other developers, designers, and stakeholders in an agile environment to clarify requirements and deliver solutions.
• Implement security best practices and protect sensitive data.
• Participate in code reviews and mentor junior developers.

Requirements

• Proven experience with the MERN stack (MongoDB, Express.js, React, Node.js).
• Strong skills in JavaScript, HTML5, and CSS3.
• Familiarity with RESTful API design, version control systems (Git), and front-end frameworks like Bootstrap or Material-UI.
• Understanding of database design, schema management, and NoSQL principles.
• Problem-solving ability and communication skills.
• Bachelor's degree in computer science or related field (preferred).
• Experience working collaboratively in a team-oriented environment.

Key Skills

• JavaScript, React.js, Node.js, Express.js, MongoDB.
• HTML/CSS, RESTful APIs, Git.
• Familiarity with agile methodologies and UI/UX best practices.
• Testing, debugging, code optimization, and deployment.

About the Role :

We are looking for a skilled and strong expertise in Vue.js and EJB/Spring Boot to join our growing team. The ideal candidate should have hands-on experience building scalable, high-performance web applications and APIs, with a keen eye for performance, security, and maintainability. You will work closely with product managers, designers, and other developers to design, develop, and deploy innovative solutions for modern web applications.

Key Responsibilities :

- Develop, test, and maintain frontend applications using Vue.js .

- Design and implement backend services and RESTful APIs using Jersey Client EJB or Spring Boot.

- Integrate frontend and backend services ensuring seamless data flow and optimized performance.

- Work with relational and/or NoSQL databases, ensuring efficient query design and schema modeling.

- Implement secure authentication/authorization flows (JWT, OAuth2, etc.).

- Optimize application performance for speed, responsiveness, and SEO.

- Write clean, maintainable, and well-documented code with proper unit/integration tests.

- Collaborate with cross-functional teams for requirement gathering, technical design, and solution delivery.

- Stay up to date with latest technologies in Vue ecosystem, Java EJB, Jersey Client / Spring Boot, cloud deployment, and DevOps practices.

- Contribute to code reviews, technical documentation, and team knowledge sharing.

Required Skills & Qualifications :

- Strong expertise in Vue.js (Composition API, Vuex/Pinia, Vue Router).

- Hands-on experience with EJB and Jersey Client / Spring Boot for building scalable and secure backend APIs.

- Strong understanding of REST API design, microservices architecture, and best practices.

- Proficiency in JavaScript/TypeScript, HTML5, CSS3, Tailwind/Bootstrap.

- Experience with relational databases (MySQL/PostgreSQL) and ORM tools (JPA/Hibernate).

- Caching : Redis

- DevOps Tools : CI/CD with GitLab CI, Jenkins (optional)

- Version Control : GitLab, SVN

- Others : Postman, Swagger/OpenAPI, Maven/Gradle

- Excellent problem-solving, debugging, and communication skills.

Preferred Skills (Good to Have) :

- Experience with GraphQL, WebSockets, or gRPC.

- Knowledge of ElasticSearch, Redis, or Kafka.

- Familiarity with Headless CMS integrations.

- Exposure to Agile/Scrum methodology.

- Familiarity with Docker, CI/CD pipelines, Git, and cloud deployment (AWS/GCP/Azure).

- Knowledge of security best practices (XSS, CSRF, CORS, API security).

Responsibilities:

• Work with development teams and product managers to ideate software solutions.
• Design client-side and server-side architecture.
• Build the front end of applications through appealing visual design.
• Develop and manage well-functioning databases and applications.
• Write effective APIs.
• Test software to ensure responsiveness and efficiency.
• Troubleshoot, debug, and upgrade software.
• Create security and data protection settings.
• Build features and applications with a mobile responsive design.
• Write technical documentation.

Requirements:

• 6 years of proven experience as a Full Stack Developer or similar role.
• Experience working with service-oriented architectures and web-based solutions.
• Familiarity with common stacks.
• Knowledge of multiple front-end languages and libraries (e. g. HTML/ CSS, JavaScript, XML, jQuery).
• Knowledge of multiple back-end languages (e. g. C#, Java, Python) and JavaScript frameworks (e. g. Angular, React, Node.js ).
• Familiarity with databases (e. g. MySQL, MongoDB), web servers (e. g. Apache), and UI/UX design.
• Experience working on Agile processes (Scrum, Kanban).
• Experience working on AWS technologies.
• Excellent communication and teamwork skills.
• Great attention to detail.
• Organizational skills.
• An analytical mind.
• Degree in B. tech/BE.
• Candidates Should have scored 60% and above in their graduation.

What You’ll Be Doing

• 🛠 Write code for web and mobile apps, fix bugs, and work on features that people will actually use.
• 💡 Join brainstorming sessions and help shape our products.
• 🚀 Things move fast here, and you’ll learn as you go.
• 🤝 Work closely with everyone—designers, developers, and even marketing folks.
• 🔧 Diving into Our Tech Stack: React, React Native Node, Express, Python, FastAPI, and PostgreSQL.

What We’re Looking For

We’re not looking for perfection, but if you’re curious, motivated, and excited to learn, you’ll fit right in!

For Backend Engineers

• 💻 Strong knowledge of Python, FastAPI, and PostgreSQL.
• 🔍 Solid understanding of Low-Level Design (LLD) and High-Level Design (HLD).
• ⚡ Ability to optimize APIs, manage databases efficiently, and handle real-world scaling challenges.

For Frontend Engineers

• 💻 Expertise in React Native.
• 🎯 Knowledge of native Kotlin (Android) and Swift (iOS) is a big bonus.
• 🚀 Comfortable with state management, performance optimization, and handling platform-specific quirks.

General Expectations for All Engineers

• 🛠 While you’ll be specialized in either frontend or backend, you should be good enough to fix bugs in both.
• 🔍 You enjoy figuring things out and experimenting until you get it right.
• 🤝 Great communication skills and a collaborative mindset.
• 🚀 You’re ready to dive in and make things happen.

Interview Process

If we like your application, Be ready to:

1. Solve a data structures and algorithms (DSA) problem in your preferred programming language.
2. Answer questions about your specialized area (frontend/backend) to showcase your depth of knowledge.
3. Discuss a real-world problem and how you’d debug & fix an issue in both frontend and backend

Why Join Us?

• 💡 Your work will matter here—no busy work, just real projects with real outcomes.
• 🚀 Help shape the future of our company.
• 🎉 We’re all about solving cool problems and having fun while we do it.

We are a B2B SaaS company that is re-imagining how companies use sales incentives to motivate their employees. We believe great results are only achieved when people are motivated - and our product is nothing but an extension of that philosophy.

On a more day-to-day level, our product takes away the ambiguity and grunt-work behind manual sales incentive calculation, and allows companies to experiment with incentive plans that actually work for every employee - and not just top performers. We are a team of experienced founders who between them have built and sold software products pretty much all across the globe. We are backed by some of the best angels and institutional investors in India - and are growing at breakneck speed.

Responsibilities

• Work as part of a collaborative, agile team to deliver industry-leading engagement capabilities in web.
• Integrate with other services to help Elevate seamlessly provide value to more companies
• Design and develop feature enhancements that continue to deliver on the value and provide an excellent customer experience
• Troubleshoot and resolve emergency server or code issues at any stack level
• Ability to empathize with end-users; build with scale and ease of adoption in mind
• Experience building in an agile setting with code reviews and quality as a priority
• Strong design skills for separation and modularity of code; aversion to overly complex, spaghetti code

Qualifications

• A bachelor's degree in Computer Science, related technical field, or commensurate experience
• 1+ years experience in production web application development
• 1+ years of experience working with NodeJS or an equivalent web framework and language
• Experience writing JavaScript code, either vanilla JS or using a framework such as Node.js or React, Redux
• Unit testing experience (Jest)
• 3rd party API usage and integration experience
• RDBMS usage (e.g. MySQL, PostgreSQL)
• AWS

Persistence: design it, build it, if it breaks, fix it, but make it work, and make it shine

Bonus Skills

• Free and/or Open Source project work
• Amazon Web Services, DevOps experience
• Database Design

Perks

• Competitive salary and equity package
• Great culture and team camaraderie
• Work from Anywhere
• Health Insurance
• Flexible vacation and sick policy
• Macbook Pro or similar Linux laptop

About Us

We have grown over 1400% in revenues in the last year.

Interface.ai provides an Intelligent Virtual Assistant (IVA) to FIs to automate calls and customer inquiries across multiple channels and engage their customers with financial insights and upsell/cross-sell.

Our IVA is transforming financial institutions’ call centers from a cost to a revenue center.

Our core technology is built 100% in-house with several breakthroughs in Natural Language Understanding. Our parser is built based on zero-shot learning that helps us to launch industry-specific IVA that can achieve over 90% accuracy on Day-1. 

We are 45 people strong with employees spread across India and US locations. Many of them come from ML teams at Apple, Microsoft, and Salesforce in the US along with enterprise architects with over 20+ years of experience building large-scale systems. Our India team consists of people from ISB, IIMs, and many who have been previously part of early-stage startups. 

We are a fully remote team.

Founders come from Banking and Enterprise Technology backgrounds with previous experience scaling companies from scratch to $50M+ in revenues.

As a SDE III, you will be :

1. Designing and implementing FullStack applications of interface.ai’s conversational AI platform and playing a significant role in evolving them.
2. Working with a team of driven and passionate engineers working on cutting edge technology, who take pride in solving complex problems.
3. Engaging in cross-functional team discussions on Product, design, QA, deployment and maintenance,  in a fast-moving collaborative set up.
4. Building reusable code and libraries for future use
5. Analyzing high level requirements, breaking it down into workable/demoable tasks, estimating them and delivering with high quality.
6. Contributing to improve our engineering processes, tooling, and standards.

1. Are extremely self motivated
2. Have ability to learn quickly
3. Have a growth Mindset (read this if you don't know what it means - https://www.amazon.com/Mindset-Psychology-Carol-S-Dweck/dp/0345472322" target="_blank">link)
4. Have Emotional Maturity (read this if you don't know what it means - https://medium.com/@krisgage/15-signs-of-emotional-maturity-38b1a2ab9766" target="_blank">link)
5. Are Passionate about the possibilities at the intersection of AI + Banking
6. Have worked in a startup of 5 to 30 employees
7. Have outstanding problem-solving abilities
8. Have proactive outlook for ways to make the solution better
9. Have 5+ years of experience in delivering scalable complex technical products
10. Have Good knowledge of distributed technologies, low latency, and highly scalable systems. 
11. Have Expertise in JavaScript and Node.js
12. Have Hands-on experience in Node.JS / Express.JS / Hapi.js / Koa.js (or any other Web Framework), and Relational Databases (preferably PostgreSQL)
13. Have Expertise with unit testing & Test Driven Development (TDD)
14. Have Hands-on experience in Mocha or other Javascript testing frameworks
15. Have experience working with react, python (Nice to have)
16. Have hands-on experience in developing applications using microservices, container technologies, container management systems such as Kubernetes
17. Have a strong understanding of systems using real-time interactions (web sockets, long-polling, server-sent events)
18. Have hands-on experience in the Implementation of security and data protection
19. Are eager to learn new technologies
20. Have excellent written and verbal communication skills, including the ability to write detailed technical documents.
21. Are passionate about helping teams grow by inspiring and mentoring engineers