Java, Spring Boot, Microservices Development

Job Title : Senior Full Stack Developer (Dashboard Applications)

Experience : 7+ Years

Location : Gurgaon (Mandatory)

Duration : 6 to 9 Months Contract (Initial 6 Months Commitment Mandatory)

Start Date : 1st April (Immediate Joiners Preferred)

Work Mode : Hybrid (Work From Home + 1 Day/Week at Home Office in Gurgaon)

Work Schedule : 45 Hours/Week + Mandatory Weekend Availability (Saturday & Sunday)

About the Role :

We are hiring a highly skilled Full Stack Developer based out of Gurgaon to work directly with the leadership team of a Cybersecurity Product Company.

This role focuses on building advanced, high-performance dashboard applications to significantly enhance the company’s product capabilities.

This is a high-ownership, high-impact role, where the selected candidate will work closely with the founder/leadership and contribute directly to core product innovation.

Mandatory Skills :

React + TypeScript, Dashboard/Data Visualization (ECharts/D3.js), Node.js (Fastify), Kafka (real-time streaming), ClickHouse, PostgreSQL, Redis, Microservices Architecture, Performance Optimization, Gurgaon-based candidate with 7+ years experience.

Important Note (Strict Requirements) :

• Candidate must be based in Gurgaon (No remote-only candidates)
• Must be comfortable working on weekends (Sat & Sun)
• Must commit to minimum 6 months
• Must be available for in-person collaboration (1 day/week at home office)
• No compromise on the above requirements

Key Responsibilities :

• Design and develop scalable, real-time dashboard applications
• Build data visualization systems using modern frontend frameworks
• Work on end-to-end full stack development (UI to backend APIs)
• Integrate large-scale data pipelines and streaming systems
• Optimize dashboards for performance, usability, and responsiveness
• Collaborate directly with leadership to translate business needs into technical solutions
• Contribute to architecture decisions and system design

Required Technical Skills :

Frontend :

• React.js (18+)
• TypeScript
• TailwindCSS
• State Management (Zustand / TanStack Query)
• Data Visualization:
• Apache ECharts
• D3.js
• Leaflet.js (Maps)

Backend :

• Node.js (20 LTS)
• Fastify (preferred)
• REST API Development
• Prisma ORM

Data & Streaming :

• Apache Kafka / KafkaJS
• Apache Flink (or Kafka Streams)

Databases :

• ClickHouse (must have for analytics use cases)
• PostgreSQL
• Redis

Good to Have :

• Graph DB (Neo4j)
• Object Storage (MinIO)

Machine Learning (Nice to Have) :

• Python (FastAPI)
• Basic experience with:
• scikit-learn
• pandas / numpy
• Understanding of anomaly detection systems

DevOps & Infrastructure :

• Docker & Kubernetes
• Terraform
• Nginx
• Monitoring: Prometheus, Grafana
• Observability: OpenTelemetry
• Authentication: Keycloak / JWT

Testing & Quality :

• Unit & Integration Testing:
• Vitest / Jest
• Supertest
• E2E Testing:
• Playwright
• Performance Testing:
• k6

What We’re Looking For :

• Strong experience in building complex dashboards or analytics platforms
• Ability to work independently as a single contributor
• High ownership and accountability mindset
• Strong problem-solving and system design skills
• Someone who is practical, execution-focused, and reliable

Why Join :

• Direct collaboration with leadership
• Opportunity to build cutting-edge cybersecurity dashboards
• High-impact role with end-to-end ownership
• Flexible work setup (with meaningful in-person collaboration)

Job Summary

We are seeking an experienced Java Full Stack Developer with 8+ years of hands-on experience in designing, developing, and maintaining scalable web applications. The ideal candidate should have strong expertise in Java (Spring Boot) on the backend and React.js on the frontend, along with experience in REST APIs, Microservices architecture, and cloud-based deployments.

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications using Java, Spring Boot, and React.js
• Develop RESTful APIs and Microservices-based applications
• Collaborate with cross-functional teams including UI/UX, DevOps, QA, and Product teams
• Write clean, efficient, and reusable code following best practices
• Perform code reviews and mentor junior developers
• Optimize applications for performance and scalability
• Participate in architectural discussions and technical decision-making
• Ensure application security, data protection, and compliance standards
• Troubleshoot, debug, and upgrade existing systems

Required Skills:

• 7+ years of experience in Full Stack development
• Strong hands-on expertise in Java (8/11/17)
• Proficiency in Spring Boot, Spring MVC, Spring Security
• Experience in Microservices architecture and RESTful API development
• Strong knowledge of React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with state management tools (Redux/Context API)
• Hands-on experience with Hibernate/JPA
• Good understanding of SQL databases (MySQL/PostgreSQL/Oracle)
• Experience with Git, Maven/Gradle, and CI/CD pipelines
• Working knowledge of Docker/Kubernetes
• Exposure to Cloud platforms (AWS/Azure/GCP) preferred
• Strong problem-solving and analytical skills

About CodersBrain

CodersBrain is a leading consultancy firm that offers offshore development services to clients all over the world. They provide end-to-end digital and business solutions that partner with clients to simplify, strengthen, and transform their businesses. They have extensive experience working with enterprises, software companies, SMEs, and startups.

Position Overview

Job Title: Java FS Developer with React

Experience: 3 to 9 Years

Location: Hyderabad / Bangalore / Chennai

Notice Period: Immediate to 15 Days

Required Skills and Experience

• Java Full Stack Developer with 3-9 years of experience
• Strong experience with Java 8 and strings
• Hands-on experience in React JS

I

Microservices specialists

Company Profile: Nucleus Software has been providing Products and Services to various Global and Regional Financial  institutions , from past 36 years. As a pioneer IT Service provider, Nucleus carry deep banking domain expertise and experience on latest technological trends. Nucleus’s developed platforms powers the operations of more than 150 institutions in 50 countries, supporting multiple business veritcals, accessible through Mobile and internet channels

Job description:

• Bachelor's or master’s degree in Computer Science, Information Systems, or other related field. Or equivalent work experience.
• Expertise with Java/J2EE experience including frameworks such as Spring REST, Spring Batch.
• Experience with Spring Boot, Microservices, NoSQL, caching and message queue technologies like Kafka.
• Good working knowledge of SQL databases (Oracle, SQL Server,MySql etc.,) and integrations with Spring DAO/REST/JPA.
• Integration experience consuming REST Services and developing REST Clients with third-party REST & SOAP Services with JSON/XML.
• Expertise on API concepts and technologies such as REST, JSON, XML, SOAP, YAML, GraphQL, and Swagger.
• Understanding of securing APIs with JWT/OAuth2/OpenID & Spring Security is a plus.
• Ability to manage Docker containers and exposure to Jenkins & CI/CD is a plus.
• Ability to understand business plans and apply that information into the scalable development models.
• Ability to guide, train, mentor associate engineers & collaborate with developers using agile practices.
• Proven ability to work creatively in a problem-solving environment.

Experince-6-9 yrs

Location: Noida or Chennai

Package: upto 20L

JD of Java Full Stack Developer:-

  Java 8 / java 11

o Strong on OOPS concepts / not theoretically, should be able to analyze the outcome of a code snippet and also should have an ability to write code during the interview

o Should be well versed with the key features of Java 8 / Java 11

o Some of the concepts to mentions would be

§ Upcasting / downcasting  / exception handling

  JUNIT5 – Mockito / PowerMock

  JPA & Hibernate

o Should be well versed with Java persistence and key concepts, to mention a few as below

o First level cache

o Second level cache

o N+1 problem

  Microservices

o Should be well versed with the design patterns, to mention few such as

§ Aggregator

§ Circuit breaker

§ CQRS

o Should be able to explain a micro-service for CURD operations with spring boot

o Should be well versed with the HTTP codes

  Splunk / Kibana

·         Frontend tools:- Angular/React/Nodejs.

• Bring in a "can-do" attitude
• Passion towards technology and software engineering - open source, pet projects, conference talks, getting better at writing clean code.
• Participate in a highly fluid environment applying agile software development principles.
• Carry out unit tests and other quality control mechanisms to inform and validate the designs and code
• Work with product owner/BAs to bring an end to end perspective of the problem.
• Ability to ask the right questions and communicate your ideas with clarity.
• Ability to collaborate with various stakeholders and take complete ownership.
• Participate actively in building one of the most impactful organizations in retail technology.

• Quickly adapt to our startup environment which is both demanding and fast-paced (but is also a lot of fun).
• Eager in learning new concepts, technologies and be productive in short time.
• Convert a raw idea into usable real-life software products Write modular, readable and maintainable code.
• Good understanding and working knowledge of technologies worked.
• Demonstrate good problem solving skills
• Own and be able to manage a small to medium sized modules.
• Demonstrate ability to guide and coach a new team member or fresher.

• B-Tech / B.E. from a reputed college / university

• Strong problem solving and analytical skills
• Good knowledge of Core Java, JSP and Servlet
• Fluency in programming constructs
• Good expertise in working with databases and Query language.
• Mature, thoughtful, and a natural fit for a collaborative, team-oriented culture
• Hard-working and eager to learn in a fast-paced, innovative environment
• Spring Boot & Microservices architecture
• Strong foundation and expert knowledge in the area of Core Java and J2EE standards.
• Sprint IOC & Spring MVC

• Experience with all levels of operation available to the front-end, such as from creating XHRs in vanilla JS to using a custom wrapper around $resource
• Proficiency with JavaScript and HTML5
• Creating custom, general use modules and components which extend the elements and modules of core AngularJS
• Experience in using build tools like Maven
• Knowledge of AngularJS practices and commonly used modules based on extensive work experience
• Creating configuration, build, and test scripts for continuous integration environments.