Senior Software Developer

Role Overview

We are looking for a Senior Full Stack Developer in India with strong hands-on experience across frontend and backend development to deliver high-quality, scalable solutions for global clients.

This role requires deep technical expertise, the ability to work independently on complex requirements, and strong collaboration with global delivery teams across regions. You will contribute to technical decision-making, mentor team members, and ensure solutions meet enterprise-grade standards.

Key Responsibilities

Full Stack Development

• Design, develop, test, and maintain robust and scalable full stack applications
• Work across frontend and backend layers depending on project demands
• Deliver clean, maintainable, and performance-optimized code

Technical Contribution & Quality

• Contribute to technical and architectural decisions
• Ensure applications meet requirements for security, performance, reliability, and scalability
• Participate actively in code reviews and technical discussions

Delivery & Collaboration

• Work closely with Product, UX, QA, DevOps, and global delivery teams
• Participate in agile ceremonies including sprint planning, reviews, and retrospectives
• Communicate effectively with Delivery Managers and project stakeholders on progress, risks, and dependencies

Mentoring & Team Enablement

• Mentor junior and mid-level developers on coding, testing, and design best practices
• Support your project team and the wider engineering community through knowledge sharing
• Contribute to continuous improvement of development standards and practices

Continuous Learning & Improvement

• Stay current with evolving technologies, frameworks, and engineering practices
• Participate in POCs, technical evaluations, and learning initiatives
• Actively contribute to improving tools, processes, and delivery approaches

Required Qualifications & Experience

• BE, ME/MTech, MCA, MSc, or equivalent degree-level education
• 5-10+ years of hands-on experience as a Full Stack Developer
• Strong experience working in client-facing, delivery-oriented environments
• Proven experience working in agile development teams
• Ability to work effectively with distributed/global teams

Technical Skills

Frontend

• Angular 16 (preferred) or React (can convert to Angular)
• TypeScript, JavaScript, HTML5, CSS / SCSS, Tailwind CSS
• Advanced state management and frontend performance optimization

Backend

• Java (Spring Boot preferred) or Node.js
• RESTful APIs and microservices architecture
• Unit testing and mocking frameworks (JUnit, Mockito)
• Asynchronous and event-driven messaging

Data & Integration

• Strong experience with SQL and/or NoSQL databases
• Database schema design, data modeling, and query optimization
• Experience with enterprise integrations, message queues, and event-driven systems

DevOps & Engineering Practices

• CI/CD pipelines and version control (Git)
• Automated testing (unit, integration, frontend and backend)
• Understanding of deployment, monitoring, and operational reliability

Professional & Behavioral Skills

• Strong problem-solving and analytical mindset
• Clear verbal and written communication skills in English
• Ability to work independently, manage priorities, and meet delivery timelines
• Commercial awareness in client delivery and project execution
• Strong collaboration and team-oriented approach

Nice to Have

• Open-source contributions (GitHub, npm/Maven publishing)
• Experience with technical POCs, R&D initiatives, or innovation projects
• Participation in tech communities, mentoring programs, or knowledge forums
• Relevant certifications or advanced technical training

About Columbus :

Columbus is a global IT services and consulting corporation with more than 3,000 employees serving our customers worldwide. We bring digital transformation into your business and position you to thrive far into the future. We offer a comprehensive solution portfolio with deep industry knowledge, extensive technology expertise and profound customer insight. We have proven this through 32 years of experience serving more than 5,000 customers worldwide.

Job Description: Java Developer

Position: Java Developer

Experience: 5 to 7 Years

Notice Period: Immediate Joiner

Key Responsibilities

• Design, develop, and maintain scalable, high-performance Java applications.
• Work with Core Java and Advanced Java concepts to build reliable backend solutions.
• Develop and deploy applications using Spring Boot framework.
• Design and implement RESTful Microservices with best practices in scalability and performance.
• Collaborate with cross-functional teams in an Agile/Scrum environment.
• Manage code versions effectively using Git/GitHub.
• Ensure code quality by integrating and analyzing with SonarQube.
• Participate in code reviews, sprint planning, and daily stand-ups.
• Troubleshoot production issues and optimize system performance.

Required Skills

• Strong proficiency in Core Java (OOPs, Collections, Multithreading, Exception Handling).
• Hands-on experience in Advanced Java (JDBC, Servlets, JSP, JPA/Hibernate).
• Proven experience with Spring Boot for application development.
• Knowledge and experience in Microservices Architecture.
• Familiarity with REST APIs, JSON, and Web Services.
• Proficient in Git/GitHub for version control and collaboration.
• Experience with Sonar Qube for code quality and security checks.
• Good understanding of Agile/Scrum methodologies.
• Strong problem-solving and debugging skills.

Nice-to-Have

• Experience with CI/CD pipelines (Jenkins, GitHub Actions, or similar).
• Familiarity with Docker/Kubernetes for containerized deployments.
• Basic knowledge of cloud platforms (AWS, Azure, GCP).

We are looking for a Java developer responsible for building Java applications. This includes anything between complex groups of back-end services and their client-end (desktop and mobile) counterparts. Your primary responsibility will be to design and develop these applications, and to coordinate with the rest of the team working on different layers of the infrastructure. Thus, a commitment to collaborative problem solving, sophisticated design, and product quality is essential.

Backend (Mandatory/Must to have skills) :

1. Core Java/Java8,
2. Spring boot,
3. Spring Security,
4. Hibernate or any other ORM (Object Relational Mapping) framework.
5. SQL/PL-SQL (Oracle or Mysql or postgresql) but mostly Oracle
6. Restful webservices
7. Git

Backend (Good to have skills) :

1. Knowledge of SOAP based webservices
2. Struts framework
3. Microservices

Backend (Not absolutely necessary but plus point if candidate has knowledge about ) :

1. Docker
2. Apache Kafka/ any other messaging queue tool like RabbitMQ, ActiveMQ etc.,)
3. Cloud experience AWS/Azure

Responsibilities:

• Contribute in all phases of the development lifecycle
• Write well designed, testable, efficient code
• Ensure designs are in compliance with specifications
• Prepare and produce releases of software components
• Translate application storyboards and use cases into functional applications
• Design, build, and maintain efficient, reusable, and reliable Java code
• Ensure the best possible performance, quality, and responsiveness of the applications
• Identify bottlenecks and bugs, and devise solutions to these problems
• Help maintain code quality, organization and automatization

Experience - 7 to 8 Years

Location - Remote

Shift - US Shift (Timing 7pm to 3am IST OR 8pm to 4am IST)

Notice Period – Immediate/ 15 Days/ 1 month

Job Description:

We are looking for a Java developer experienced in developing microservices using a framework such as Quarkus, Micronaut or Spring Boot. Your primary responsibility will be to implement these microservices to a high level of quality.

Responsibilities:
- Create REST APIs to specification.
- Create documentation for the individual microservices.

Technologies:
JAVA 8, J2EE, Spring, Spring Boot, Spring Data JPA, Tomcat, SHELL Script, Hibernate, etc

Skills:

• Strong Understanding of Microservice Architecture
• Minimum 6 years of Proven/ Implementation experience in developing and deploying microservices.
• Experience working on J2EE based applications.
• Experience in performing Technical Assessment of current state of systems/ Debugging.
• Good skills in debugging.
• Strong in development of Spring Boot and Spring applications.
• Strong in development of Restful API using JAX-RS and JSON
• Good knowledge possibly experienced with AWS components like S3, Lambda, API Gateway,
• Dynamo DB, CloudWatch.

Job description 

Role : Java Developer 

Experience: 5+ years 

Work Location: Bangalore (Work From Office )

Requirements: 

Hands-on experience in Java/J2EE technologies in developing Web, Distributed Enterprise and Interoperable Applications. 

Expert level programming skills in Java OOPS concepts. 

Expertise in Spring boot ,Microservices 

Experience in using and developing RESTful APIs using JAX RS, Spring Rest using JSON and XML. 

Good to have Experience in developing SOAP API using JAX WS with (XML, XSD, DTD, WSDL). 

Good to have knowledge in Struts (Struts 1.0, JSP, JavaScript, jQuery, AJAX, Servlets) 

Prior hands-on experience & Knowledge in Docker & Kubernetes, Microservice Architecture (developing applications on cloud platforms) 

Good experience and understanding in Caching, Distributed/Scalable Architecture. 

Expertise in using GOF Design Patterns, Data Structures & Algorithms and reactive programming technologies 

Experience in Unit Testing Frameworks. 

Must have Degree in Computer Science or equivalent 

Experience with Product development companies will be preferred 

Experience in Gaming Domain using WebSockets in java will be preferred 

Strong verbal & written communication skills 

Python experts for NSO work

• Strong coding Experience in programming language like Python (Minimum 5+ years of experience)
• Proven hands-on Software Development experience
• Proven working experience in Python development
• Hands on experience in designing and developing applications using Python platforms
• Object Oriented analysis and design using common design patterns.
• Profound insight of Python Java and JEE internals
• Knowledge of Yang data modelling, Netconf (Must) and XML
• Knowledge on REST/ SOAP API's
• Basic knowledge of Networking i.e., MPLS, L3 VPN.
• Bachelor's degree in computer science or equivalent
• Very strong aptitude and reasoning
• Ability to break complex problems into parts and solve them
• Must be able to communicate thoughts clearly to the team
• Good understanding of various database i.e., Mongo DB, MYSQL.
• Good understanding of the DevOps tools Jenkins, GitHub for version controlling.

·      Knowledge on NSO 

• Java/J2EE, Spring, Spring Boot, REST, JSON, Micro Services, 12 Factor Apps, Apache.
• Strong understanding of microservice architecture
• Ability to design, develop and implement scalable, elastic microservice based platforms.
• Demonstrated knowledge of OAuth token-based authentication protocol.
• Demonstrated knowledge of PCI and Security Coding Standards.
• Performs hands on coding using Java/J2EE & unit testing.
• Contribute to the Design and develop high quality software for large scale Java/Spring Batch/Micro-service Applications.
• Proficiency in the following general areas: Java (Java 1. 7/Java 1. 8), Spring Framework, Jenkins, Gradle, and GitHub.
• Experience with RESTful services, Rabbit MQ, JSON, Unix Scripting, and Hadoop is a plus.
• Core development experience in large scale enterprise Java applications using Spring Framework.
• Experience in SQL (DB2 & SQL databases)
• Strong knowledge and experience on Nginx as APIM tool Solid experience in coding and creating APIs.
•  Expertise in WSDL, XML, XSLT, JSON, XPATH and Gateway scripts
• Provide front line support for Nginx related problems by being involved in troubleshooting, root cause analysis and appropriate secure integration recommendations.
• Installation of Nginx API Gateway as per need.
• Experience in Containers and Kubernetes.
• Good linux and administration skills
• Experience on API Orchestration/Mediation/Protocol Bindings and transformation knowledge on disparate message structures
• Design, develop and implement API proxies using OpenAPI specification Analysing logs and trace for errors and exceptions Manage and publish content in Developer portal Security implementation using OAUTH, SAML, CORS 
• Must Have Knowledge of API development and its technologies.

Location: Remote Working

** Preference will be given to immediate joinee

Full Stack Developer

Skills:

• Proficiency with JavaScript and HTML5

• Minimum 2+ years of hands-on experience with AngularJS and Angular Frameworks

• Experience with Java, JSON, Spring Boot and Hibernate 

• Experience with MYSQL databases

• Familiarity with Linux environments

• Experience with GIT 

• Hands on experience with AWS S3 is preferred

• Experience with web servers & application servers such as Apache and Nginx is good to have

Responsibilities: 

• Design and develop client-side and server-side architecture

• Develop and manage well-functioning database

• Implementation of approved user interface

• Design and construction of REST APIs

• Server management and deployment for the relevant environment