React or Rails Developer

Position : Tech Lead – Fullstack Developer

Experience : 7 to 15 Years

Location : MG Road, Bengaluru (Hybrid – 3 Days in Office)

Notice Period : Immediate / Serving / 15 Days or Less

About the Opportunity :

We are hiring a Tech Lead – Fullstack Developer for a well-funded product startup building an enterprise-grade SaaS platform in the Cybersecurity domain.

The role involves designing and delivering scalable microservices and cloud-native applications in a high-performing, Agile engineering environment.

You'll work alongside industry veterans from billion-dollar digital firms, contributing to technical design, product architecture, and engineering best practices.

Mandatory Skills : Java, Spring Boot, ReactJS (or any modern JavaScript framework), RESTful APIs, PostgreSQL, Docker, Kubernetes, CI/CD, Hibernate/JPA, Multithreading, and Microservices architecture.

Role Highlights :

• Lead fullstack product development using Java (Spring Boot) and ReactJS (or similar frameworks).
• Design, develop, test, and deploy scalable microservices and RESTful APIs.
• Collaborate with Product, DevOps, and QA teams in a fast-paced Agile environment.
• Write modular, secure, and efficient code optimized for performance and maintainability.
• Mentor junior developers and influence architecture decisions across the team.
• Participate in all stages of the product lifecycle, from design to deployment.
• Create technical documentation, UML diagrams, and contribute to knowledge-sharing through blogs or whitepapers.

Key Skills Required :

1. Strong expertise in Java (mandatory) and Spring Boot.
2. Proficient in frontend development using ReactJS or similar frameworks.
3. Hands-on experience building and consuming RESTful APIs.
4. Solid knowledge of PostgreSQL, Hibernate/JPA, and transaction management.
5. Familiarity with Docker, Kubernetes, and cloud platforms (Azure/GCP).
6. Understanding of API Gateway, ACID properties, multithreading, and performance tuning.
7. Experience with CI/CD tools (Jenkins, GitHub Actions, GitLab CI) and Agile methodologies.
8. Strong debugging and profiling skills for performance bottlenecks.

Nice to Have :

• Experience with data integration tools (e.g., Pentaho, Apache NiFi).
• Exposure to the Healthcare or Cybersecurity domain.
• Familiarity with OpenAI APIs or real-time analytics tools.
• Willingness to contribute to internal documentation, blog posts, or whitepapers.

Perks & Benefits :

• Opportunity to build a product from scratch.
• Flat hierarchy and direct access to leadership.
• Strong focus on learning, mentorship, and technical innovation.
• Collaborative startup culture with long-term growth opportunities.

Interview Process :

1. Technical Round – Technical Assessment
2. Technical Interview – Core Development
3. Advanced Technical Interview – Design & Problem Solving
4. Final Round – CTO Discussion

•  Experience with Web fundamentals like HTML5, JavaScript, CSS3, and JSP, java, angular etc
•  Good understanding of Object-Oriented JavaScript (OOJS), ES6,
•   Hands-on exp in Web app development using modern client-side MVC frameworks using ReactJS
•   Experience in Full stack development or Back end development
• Thorough understanding of ReactJs and its core principles
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Experience developing custom reusable components in ReactJS
• Proficient understanding of unit testing using JavaScript test frameworks like JEST       Experience integrating REST APIs
• Ability to understand business requirements and translate them into technical requirements     

• Binding of UI elements to JavaScript object models
• Creating RESTful services with Node.js
• MERN stack developer must have proven experience in front & back-end development
• Work in a cross-functional team to deliver a complete user experience
• Developer must expertise into MongoDB, Express, Node.js, & React.
• Create Unit and Integration tests to ensure the quality of code
• MERN full stack developer must have the ability to wear many hats and learn new technologies quickly
• Understanding & proficiency in REST APIs.
• MERN stack developer should know Git Repository and Jira.
• Integration of data storage solutions [RDBMS, NoSQL DB]
• Work with development teams and product managers to ideate software solutions
• Develop and manage well-functioning databases and applications
• Test software to ensure responsiveness and efficiency
• Create security and data protection settings
• Write technical documentation
• Work with data scientists and analysts to improve software

• Bachelor's degree in computer science or equivalent experience
• 2+ years of experience in software engineering.
• Experience with building B2B and consumer quality products, enabling business capability and objectives through technology.
• Strong cloud infrastructure experience with AWS.
• Experience in engineering practices such as code refactoring, design patterns, design driven development, continuous integration, building highly scalable applications and application security.
• Experience working with a development team using Agile methodology.
• Experience in container technologies like Docker/Kubernetes a plus.
• Hands-on skills working with SQL and No-SQL databases
  Broad experience across the following application development technologies and in depth skills with at least one: NodeJS, React, GraphQL,Python, R, Java/C++ and/or other open source application development frameworks.
• Ability to strategically balance test coverage, documentation and timelines (API/ Unit testing).
• Strong analytical and problem-solving skills paired with the ability to develop creative and efficient solutions.
• Able to work under competing priorities, manage expectations effectively and support the team under pressure; distinct user focus and quality mindset.

Responsibilities 

Design, implementation and delivery of solutions.

Solving new problems and address any issues regarding the architecture and performance. 

Focused on understanding customer needs and anticipate the changing business and technology landscape. 

Collaborate with teams from various verticals within and outside the company.

Qualifications 

2-5 years of Software Engineering experience in Node.js and React. 

Proven experience in architecting performant, complex application on web or mobile applications. 

Knowledge of end to end Software development life cycle.

Ability to work individually or in teams and mentor new developers to the team.

Strong knowledge of computer science, algorithms and design patterns. 

A degree in Computer Science or related field, or equivalent industry experience.

You will:

• Write excellent production code and tests and help others improve in code-reviews
• Analyze high-level requirements to design, document, estimate, and build systems
• Coordinate across teams to identify, resolve, mitigate and prevent technical issues
• Coach and mentor engineers within the team to develop their skills and abilities
• Continuously improve the team's practices in code-quality, reliability, performance, testing, automation, logging, monitoring, alerting, and build processes

You have:

For (Fullstack):

• 2 - 10 Years of experience
• Strong with DS & Algorithms
• Hands on Experience in the Programming languages: JavaScript (React or Angular), Python, SQL.
• Experience with AWS.

For (Geo Team):

• 4 - 10 years of experience
• Experience with Big Data technologies like Hadoop, Spark, Map Reduce, Kafka, etc
• Experience using object-oriented languages (Java, Python)
• Experience in working with different AWS technologies.
• Experience in software design, architecture and development.
• Excellent competencies in data structures & algorithms.

For (Backend):

• 2 - 10 years of experience
• Hands on product development experience using Java/ C++/Python
• Experience with AWS,SQL,GIT
• Strong with Data structures and Algorithms

Additional nice to have skills/certifications:

For Java skill set:

Mockito, Grizzly, Netty, VertX, Jersey / JAX-RS, Swagger / Open API, Nginx, Protocol Buffers, Thrift, Aerospike, Redis, Kinesis, Sed, Awk, Perl

For Python skill set: Data Engineering experience, Athena, Lambda, EMR, Spark, Glue, Step Functions, Hadoop, Kinesis, Orc, Parquet, Perl, Awk, Redshift

For (Data Engineering):

• 2 - 10 years of experience
• Experience with object-oriented/object function scripting languages: Python.
• Experience with AWS cloud services: EC2, RDS, Redshift,S3,Athena, Glue
• Must be proficient in GIT, Jenkins, CICD (Continuous Integration Continuous Deployment)
• Experience in big data technologies like Hadoop, Map Reduce, Spark, etc
• Experience with Amazon Web Services and Dockers

• understanding of the front-end and back-end processes;
• ability to work with HTML / CSS;
• ability to work with databases;
• understanding of programming templates and architecture design guidelines;
• profiling and optimizing applications.

Position description:

We’re looking for a senior full stack developer (MERN) with a proven experience to design and create software. The responsibilities will include coding both on the front and back-end, writing APIs, and React components.  

Having an experience of web development using JavaScript, you should be able to create web applications from scratch. The ideal candidate should have experience of working in agile teams. 

Primary Responsibilities:

• Participating in the design and creation of scalable software
• Writing clean, functional code on the front- and back-end
• Writing unit tests and fixing bugs or other coding issues
• Develop and manage well-functioning databases and applications
• Write effective APIs and react components
• Perform peer code reviews

Reporting Team

• Reporting Designation: Full Stack Development (KH_PPLS_PE_SPD.Full Stack Development)
• Reporting Department: Software Product Development (KH_PPLS_PE_SPD)

Required Certification/s:

Required work experience

• Industry: IT
• Role: Web Development
• Years of experience: 3 to 6

Key Performance Indicators:

• 3-6 years of industry work experience 
• Proven experience as a Full Stack Developer or similar role 
• 1+ years of web application development with JavaScript as full stack 
• End-to-end full stack experience designing and building scalable applications 
• Excellent JavaScript / Typescript skills 
• Strong proficiency in React (hooks knowledge is plus) 
• Strong proficiency in Nodejs 
• Good HTML5 / CSS3 skills with expertise on responsive web design 
• Must have development experience in Micro services using NodeJS and TypeScript 
• Experience with NoSQL databases such as MongoDB, mongoose, aggregation framework and Redis 
• Experience with Web sockets and related frameworks (e.g. Socket.IO) 
• Experience in using and developing GraphQL APIs 
• Knowledge of code versioning tools such as Git, Mercurial or SVN. 
• Open minded to take up any challenge, research and provide solutions –  

Required Competencies:

• Great attention to detail 
• Testing libraries – jest, testing-library is plus 
• TDD / BDD experience is plus 
• Experience with AWS, K8S is plus 

• Familiar with SDLC methodologies like SCRUM, AGILE, Continuous Integration  

Required Skills:

ReactJS, Node.JS, HTML, CSS, Javascript, NoSQL 

Sr. Software Developer (Full Stack)

Experience: 3-6 years

Required skills:

• Proficiency in React
• HTML, CSS, Bootstrap and Material UI
• Hands-on experience on working with charting libraries like Recharts, ECharts, plotly.js, D3.js

• Node.js and MongoDB