Java Developer

JOB DETAILS:

* Job Title: Lead I - Software Engineering-Kotlin, Java, Spring Boot, Aws

* Industry: Global digital transformation solutions provide

* Salary: Best in Industry

* Experience: 5 -7 years

* Location: Trivandrum, Thiruvananthapuram

Role Proficiency:

Act creatively to develop applications and select appropriate technical options optimizing application development maintenance and performance by employing design patterns and reusing proven solutions account for others' developmental activities

Skill Examples:

1. Explain and communicate the design / development to the customer
2. Perform and evaluate test results against product specifications
3. Break down complex problems into logical components
4. Develop user interfaces business software components
5. Use data models
6. Estimate time and effort required for developing / debugging features / components
7. Perform and evaluate test in the customer or target environment
8. Make quick decisions on technical/project related challenges
9. Manage a Team mentor and handle people related issues in team
10.  Maintain high motivation levels and positive dynamics in the team.
11.  Interface with other teams’ designers and other parallel practices
12.  Set goals for self and team. Provide feedback to team members
13.  Create and articulate impactful technical presentations
14.  Follow high level of business etiquette in emails and other business communication
15.  Drive conference calls with customers addressing customer questions
16.   Proactively ask for and offer help
17.  Ability to work under pressure determine dependencies risks facilitate planning; handling multiple tasks.
18.  Build confidence with customers by meeting the deliverables on time with quality.
19.  Estimate time and effort resources required for developing / debugging features / components
20.  Make on appropriate utilization of Software / Hardware’s.
21.  Strong analytical and problem-solving abilities

Knowledge Examples:

•     Appropriate software programs / modules

1. Functional and technical designing
2. Programming languages – proficient in multiple skill clusters
3. DBMS
4. Operating Systems and software platforms
5. Software Development Life Cycle
6. Agile – Scrum or Kanban Methods
7. Integrated development environment (IDE)
8. Rapid application development (RAD)
9. Modelling technology and languages
10. Interface definition languages (IDL)
11. Knowledge of customer domain and deep understanding of sub domain where problem is solved

Additional Comments:

We are seeking an experienced Senior Backend Engineer with strong expertise in Kotlin and Java to join our dynamic engineering team.

The ideal candidate will have a deep understanding of backend frameworks, cloud technologies, and scalable microservices architectures, with a passion for clean code, resilience, and system observability.

You will play a critical role in designing, developing, and maintaining core backend services that power our high-availability e-commerce and promotion platforms.

Key Responsibilities

Design, develop, and maintain backend services using Kotlin (JVM, Coroutines, Serialization) and Java.

Build robust microservices with Spring Boot and related Spring ecosystem components (Spring Cloud, Spring Security, Spring Kafka, Spring Data).

Implement efficient serialization/deserialization using Jackson and Kotlin Serialization. Develop, maintain, and execute automated tests using JUnit 5, Mockk, and ArchUnit to ensure code quality.

Work with Kafka Streams (Avro), Oracle SQL (JDBC, JPA), DynamoDB, and Redis for data storage and caching needs. Deploy and manage services in AWS environment leveraging DynamoDB, Lambdas, and IAM.

Implement CI/CD pipelines with GitLab CI to automate build, test, and deployment processes.

Containerize applications using Docker and integrate monitoring using Datadog for tracing, metrics, and dashboards.

Define and maintain infrastructure as code using Terraform for services including GitLab, Datadog, Kafka, and Optimizely.

Develop and maintain RESTful APIs with OpenAPI (Swagger) and JSON API standards.

Apply resilience patterns using Resilience4j to build fault-tolerant systems.

Adhere to architectural and design principles such as Domain-Driven Design (DDD), Object-Oriented Programming (OOP), and Contract Testing (Pact).

Collaborate with cross-functional teams in an Agile Scrum environment to deliver high-quality features.

Utilize feature flagging tools like Optimizely to enable controlled rollouts.

Mandatory Skills & Technologies Languages:

Kotlin (JVM, Coroutines, Serialization),

Java Frameworks: Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data)

Serialization: Jackson, Kotlin Serialization

Testing: JUnit 5, Mockk, ArchUnit

Data: Kafka (Avro) Streams Oracle SQL (JDBC, JPA) DynamoDB (NoSQL) Redis (Caching)

Cloud: AWS (DynamoDB, Lambda, IAM)

CI/CD: GitLab CI Containers: Docker

Monitoring & Observability: Datadog (Tracing, Metrics, Dashboards, Monitors)

Infrastructure as Code: Terraform (GitLab, Datadog, Kafka, Optimizely)

API: OpenAPI (Swagger), REST API, JSON API

Resilience: Resilience4j

Architecture & Practices: Domain-Driven Design (DDD) Object-Oriented Programming (OOP) Contract Testing (Pact) Feature Flags (Optimizely)

Platforms: E-Commerce Platform (CommerceTools), Promotion Engine (Talon.One)

Methodologies: Scrum, Agile

Skills: Kotlin, Java, Spring Boot, Aws

Must-Haves

Kotlin (JVM, Coroutines, Serialization), Java, Spring Boot (Spring Cloud, Spring Security, Spring Kafka, Spring Data), AWS (DynamoDB, Lambda, IAM), Microservices Architecture

******

Notice period - 0 to 15 days only

Job stability is mandatory

Location: Trivandrum

Virtual Weekend Interview on 7th Feb 2026 - Saturday

Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. Required Skills: • Exp. - 4 to 7 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability to express their design ideas and thoughts. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider. 

Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore/Mumbai with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. Required Skills: • Exp. - 3 to 8 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability to express their design ideas and thoughts. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world. Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider. 

Title: Senior Java Developer

Top Skills: Java , Spring boot, Microservices, MYSQL, PL/SQL, NoSQL

Work Mode:- Full time

Location:- Teynampet, Chennai, Tamil Nadu

Employer: Innovating digital experiences with cutting-edge technology, design, and user-focused solutions for global brands

We are seeking a highly skilled and experienced Sr. Java Developer with a proven track record in

delivering high-quality applications. If you're passionate about building modern, scalable, and

robust software solutions, we want to hear from you!

Required Qualifications

7+ years of software development experience with a focus on delivering robust and

efficient solutions.

Strong proficiency in Java and its latest versions and expertise in developing

Java-based applications.

Hands-on experience with relational databases and proficiency in writing complex SQL

queries.

Familiarity with Enterprise Java (J2EE / Java EE / Spring) application architectures.

Demonstrated history of delivering modern, high-cadence applications using:

Agile methodologies and test-driven development (TDD).

CI/CD pipelines for streamlined deployment and updates.

Git version control for collaborative development.

Job Description

Java Developer Transformational Product Experiences .

Preferred Skills

Knowledge of microservices architectures and Domain-Driven Design (DDD).

Working knowledge of Python and JavaScript/Node.js.

Experience with Object-Relational Mappers (ORMs) such as Hibernate or JPA.

Strong Problem Solving skills

Bonus Skills

Exposure to emerging Generative AI technologies and tools like OpenAI APIs and GPT

large language models (LLMs).

Practical experience with MongoDB or other NoSQL, MySQL databases.

• 3+ years of Experience in software Design and development and familiar with technologies - Java, Java-J2EE, Spring Boot, Hibernate, Ajax, REST API, Micro services etc.
• Working knowledge of JVM internals
• Working knowledge of any database (MySQL or HSQLDB)
• Working knowledge of No-SQL database (Mongo or Dynamo DB)
• Working experience with messaging (JMS/RabbitMQ)
• R & D on new advanced cloud-based technologies in a test-driven agile development.
• Knowledge in designing and architecting systems with high scalability and performance requirements.
• Ability to understand infrastructure for performance evaluation and reporting of cloud-based services, namely AWS
• knowledge of key AWS services like EC2, S3, Lambda, CloudWatch etc.
• Certification on AWS Fundamendals
• Excellent communication skills
• ability to effectively articulate technical challenges and solutions
• skilled in interfacing with internal and external technical resources
• Good in debugging problems and mentoring teams on technical front

Relevant Experience

3 to 10 years

Job Description and Key Skills Required:

• Hands-on with any of the programming languages like NodeJS/ExpressJS, Python, Java, Php or any.
• Design and create efficient RESTful API endpoints for both internal and public consumption
• Strong understanding of database technologies such as MySQL, Postgress, Oracle , relational Database.
• Work closely with front end developers to understand required data model
• Comfortable deploying applications on AWS, and have a strong working knowledge of EC2, RDS and S3.
• Must understand overall system design, architecture , improve design and implement new processes.
• Strong understanding of sessions, cookies & local storage is must.
• Experience with in memory databases like redis basic, Memcache
• Independently think of solutions to complex requirements; possess exceptional logical skills.
• Analyse current products in development, including performance, scalability, diagnosis and troubleshooting.
• Work with the existing framework and evolve it by building reusable code & libraries
• Search and introduce new software related technologies, processes and tools.
• Bonus: You're fluent with React.
• Bonus: Interested in full-stack development.
• Bonus: Any experience of iOS/Android mobile development.
• Bonus: Experience with CI servers such as Jenkins, Travis or similar types
• Bonus: Experience with web server like Nginx

As Back end developer, we expect you to be motivated in solving real-life complex problems and create compelling experiences for our Resellers. Being a small company we have a culture of creative problem solving, intellectual design, fast-paced development, and passionate product delivery. Enhance or build Restful web services for our mobile app.

Responsibilities:

• Develop server-side components, REST APIs
• Assume ownership for existing and new modules including design, development, and unit testing for enhancements of existing modules and development of new modules.
• Analyse problems logically and exercise sound judgment in defining, evaluating, and solving difficult technical and operational problems where solutions may be of a precedent-establishing nature.
• Lead the design and architectural improvements
• Participate and collaborate with team members in design discussions, determines areas of complexity, potential risks to successful implementation, suggest enhancements to architecture, implement POCs, and enhance application.
• Reduce technical debt with quality coding

Requirements:

• A solid grounding in Computer Science fundamentals (based on a BS or MS in CS or related field) from IITs and Premier Engineering College.
• Excellent Object Orientation, coupled with excellent problem solving and debugging skills.
• Highly skilled at Java and related technologies, including Java Frameworks like Spring-boot or Drop wizard, RESTful web services, JSON, Servlet, JSP, MySQL, MongoDB, Kafka, AWS Solr.
• Must have hands-on experience in building scalable and secure back end systems.
• Have hands-on experience with systems that are asynchronous, RESTful and demand concurrency
• Good to have knowledge of best software engineering practices for all stages of the software development life cycle, including coding standards, code reviews, testing, deployment.

Primary Skills: Java Backend Development, UNIX, Oracle, SQL, MQFTP

Secondary Skills:  Autosys, Service Now

Experience: 6- 8 years

Responsibilities:

• Drive the Migration Project and support Business Applications teams through the project lifecycle.
• Interpret written business requirements, functional requirements and technical specification documents to design and develop technical solutions that meet business needs
• Contribute to Application development, migration of components, testing and Production Support.
• Collaborate with IT and Business partners to develop, and troubleshoot end to end technical solutions
• Create and maintain technical evaluation documentation using defined technical documentation templates that meet standards

Required Skills:

• Well versed with Java Backend Development.
• Proficient in Oracle, SQL.
• Experience in Shell scripting in UNIX, Autosys scheduler
• Good understanding of Database Management Systems (DBMS)
• Knowledge of different file movement patterns and tools  - File Transfers, Messaging, MQFTP, Sterling Integrator, Mobius
• Knowledge of different file formats plus file format conversion to & from JSON, csv etc.
• Good understanding of Object-Oriented Programming
• Good understanding of SDLC lifecycle & processes.
• Exposure to ITIL foundational concepts, Service Now and Production Management Activities.
• Financial Services experience will be a plus
• Experience in using Dev tools ( Eclipse ), code quality tools, defect tracking tools

Desired Skills: 

• Strong interpersonal, oral, presentation, and written communication skills

• Excellent team player with good organizational, communicational, analytical and logical skills.

• Strong experience in Java Development
• Deep expertise and hands-on experience with Web Applications
• Experience in programming languages such as HTML, CSS, JavaScript, JQuery, React JS, and API.
• Expertise in Java, Spring Boot is an added advantage.
• Hands-on design experience with Web Services (REST, SOAP, etc ..).
• Strong grasp of security principles.

Abilities:

• Developer with  strong ability to develop web application using Java and ReactJS
• Should be able to code, design, and implement
• Maintain code integrity and organization