
Wissen Technology is now hiring for Java Developer with hands on experience in Core Java, multithreading, algorithms, and data structure.
We are solving complex technical problems in the financial 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 highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
Experience - 3+.
Experience in Core Java 5.0 and above, CXF, Spring.
Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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, preferably Sybase database.
Good knowledge of multi-threading and high-volume server-side development.
Experience in sales and trading platforms in investment banking/capital markets.
Basic working knowledge of Unix/Linux.
Excellent problem solving and coding skills in Java.
Strong interpersonal, communication and analytical skills.
Should have the ability to express their design ideas and thoughts.

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Key Responsibilities:
- Design and develop backend components and sub-systems for large-scale platforms under guidance from senior engineers.
- Contribute to building and evolving the next-generation customer data platform.
- Write clean, efficient, and well-tested code with a focus on scalability and performance.
- Explore and experiment with modern technologies—especially open-source frameworks—
- and build small prototypes or proof-of-concepts.
- Use AI-assisted development tools to accelerate coding, testing, debugging, and learning while adhering to engineering best practices.
- Participate in code reviews, design discussions, and continuous improvement of the platform.
Qualifications:
- 0–2 years of experience (or strong academic/project background) in backend development with Java.
- Good fundamentals in algorithms, data structures, and basic performance optimizations.
- Bachelor’s or Master’s degree in Computer Science or IT (B.E / B.Tech / M.Tech / M.S) from premier institutes.
Technical Skill Set:
- Strong aptitude and analytical skills with emphasis on problem solving and clean coding.
- Working knowledge of SQL and NoSQL databases.
- Familiarity with unit testing frameworks and writing testable code is a plus.
- Basic understanding of distributed systems, messaging, or streaming platforms is a bonus.
AI-Assisted Engineering (LLM-Era Skills):
- Familiarity with modern AI coding tools such as Cursor, Claude Code, Codex, Windsurf, Opencode, or similar.
- Ability to use AI tools for code generation, refactoring, test creation, and learning new systems responsibly.
- Willingness to learn how to combine human judgment with AI assistance for high-quality engineering outcomes.
Soft Skills & Nice to Have
- Appreciation for technology and its ability to create real business value, especially in data and marketing platforms.
- Clear written and verbal communication skills.
- Strong ownership mindset and ability to execute in fast-paced environments.
- Prior internship or startup experience is a plus.
We are seeking an experienced & highly skilled Java Lead to join our team. The ideal candidate will have a strong background in both front end & Back-end Technologies with expertise in JAVA, and Spring.
As a Lead, you will be responsible for overseeing the development
team, architecture saleable application & ensuring best practices in software development. This role requires a hands on leader with excellent problem solving abilities & a passion for mentoring junior
team members.
Responsibilities
- Lead & mentor a team of developers proving guidance on coding standards, architecture & best
- practices
- Architect, design & develop ent to end JAVA based web applications & ensure high performance,
- security & scalability
- Work closely with cross functional teams, including product managers, designers & other developers
- to ensure alignment on project requirements & deliverable.
- Conduct code reviews & provide constructive feedback to team members to improve code quality &
- maintain a consistent codebase
- Participate in Agile/Scrum Ceremonies such as stand ups, sprint planning & retrospectives to
- contribute to the development process.
- Troubleshoot & resolve complex technical issues & ensure timely resolution of bugs & improvements.
- Stay up to date with emerging technologies & industry trends recommending & implementing
- improvements to keep our stack modern & effective
Skills & Requirements
- Minimum 8 Years of experience in Java development, with at least 2 years in Lead developer role.
- Back-end - Core JAVA/JAVA8, Spring-boot, Spring Framework, Micro-services, Rest API’s, Kafka,
- Database - MySQL
- Must be working in the fintech/ Payments domain
Preferred
- Experience with Batch writing, Application performance, Caches security, Web Security
Job responsibilities
- Performs development, deployment, administration, management, configuration, testing, and integration tasks related to the cloud security platforms.
- Develops automated security and compliance capabilities in support of DevOps processes in a large-scale computing environment for the storage program within the firm.
- Champions a DevOps security model so that security is automated and elastic across all platforms and cultivate a cloud first mindset in transitioning workloads.
- Leverages DevOps tools to build, harden, maintain, and instrument a comprehensive security orchestration platform for infrastructure as code.
- Provides support to drive the maturity of the Cybersecurity software development lifecycle and develop & improve the quality of technical engineering documentation.
- Makes decisions of a global, strategic nature by analyzing complex data systems and incorporating knowledge of other lines of business & JPMC standards.
- Provides quality control of engineering deliverables, technical consultation to product management and technical interface between development and operations teams.
Required qualifications, capabilities, and skills
- Formal training or certification on Security engineering and 3+ years applied experience
- Proficiency in programming languages like Python or Java with strong coding skills
- Understanding of one or more Public Cloud platforms( AWS/ GCP/ Azure)
- Experience with highly scalable systems, release management, software configuration, design, development, and implementation is required
- Ability to analyzing complex data systems – failure analysis / root cause analysis, developing, improving, and maintaining technical engineering documentation
About Company:
The company is a global leader in secure payments and trusted transactions. They are at the forefront of the digital revolution that is shaping new ways of paying, living, doing business and building relationships that pass on trust along the entire payments value chain, enabling sustainable economic growth. Their innovative solutions, rooted in a rock-solid technological base, are environmentally friendly, widely accessible and support social transformation.
Requirements:
1. Java 8+, J2EE,
2. Core Java- More hands on collections framework
3. JPA- Spring, Hibernate
4. Webservices (SOAP / Rest)
5. Knowldege on SQL & PLQL (Oracle/MySQL)
6. Expericne in Agile tools & processes
7. Good analytical & Communication skills
Back End Developer
Job Description:
Location: Pune (Initially Remote due to COVID 19)
We are looking for an experienced Backend Developer to join the team in India and be instrumental in taking our products to the next level. In this role, you will be working in close collaboration with a team of highly empowered, experienced developers who are building a high-performance, highly scaled global platform.
About the Organisation:
- It provides a dynamic, fun workplace filled with passionate individuals. We are at the cutting edge of advertising technology and there is never a dull moment at work.
- We have a truly global footprint, with our headquarters in Singapore and offices in Australia, United States, Germany, United Kingdom, and India.
- You will gain work experience in a global environment. We speak over 20 different languages, from more than 16 different nationalities and over 42% of our staff are multilingual.
You will:
- conceive, build, and operate highly distributed systems deployed around the planet
- employ cutting-edge technologies and techniques in a rapidly evolving domain
- thrive in a progressive, environment which relies on communication and initiative rather than process to deliver at a high velocity
- have a "Product Owner" rather than a "Task Implementer" attitude
Candidate's Profile:
- Experience building systems involving messaging or event-driven architectures
- Deep technical understanding of Java or Go, and willing to work with both
- Strong handle on concurrency challenges and design solutions
- Strong buyer of Agile / Lean values
- Heavy emphasis on code testing and designing for test-ability
- Maturity and aptitude to operate in a high-freedom/high-responsibility environment
- Strong troubleshooting skills
- Experience with supporting and troubleshooting large systems
- Exposure to infrastructure automation tools such as Ansible
- Exposure to IAAS platforms such as AWS EC2, GCP, etc…
- Experience with Cassandra, Aerospike, or other NoSQL databases
InnovationM is looking for a Java Developer with experience in Spring Boot, Microservices, and MongoDB to join our team. The ideal candidate should have hands-on experience in designing and developing REST APIs using Spring Boot, building microservices-based applications, working with MongoDB and have experience in deploying applications in AWS.
What you must be good at:
● Develop and maintain REST APIs using Spring Boot framework
● Build microservices-based applications using Spring Boot and related frameworks
● Design and develop data models and queries for MongoDB database
● Deploy applications in AWS using EC2, ECR, and other relevant AWS services
● Work in an Agile development environment
● Collaborate with cross-functional teams to deliver high-quality software
What you must be good at:
● 4+ years of experience in Java development
● Strong experience in Spring Boot and related frameworks
● Hands-on experience in building microservices-based applications
● Proficient in designing and developing REST APIs
● Strong experience in MongoDB, including data modeling and query optimization
● Good understanding of AWS services and deployment methodologies
● Experience working in an Agile development environment
● Proficient in Git and version control systems
- Programming Language: Java, J2EE
- Framework: Spring MVC, Spring Security, Hibernate, JMS
- Strong knowledge in any one Relational Databases (Mysql / Oracle/ SQL Server).
- Operating System: Windows & Linux.
- Configuration Management: GIT
- Tools & Utilities: STS / Eclipse / IntelliJ / NetBeans.Web/Application Server: Jboss.
- Excellent hands-on experience and knowledge of SQL.
- Strong experience in Web services (SOAP and RESTFUL).
- Should have expertise in Design Patterns, Transactions, Multi-threading concepts.
- Experience using Maven.
- Knowledge of data structure
- Deliver entire application life cycle - concept, design, build and test complex web applications.
- Gather requirements around functionality and translate those requirements into elegant functional and technical solutions.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Unit-test code for robustness, including corner cases, usability, and general reliability.
- Perform bug fixing and ensure acceptable application performance.
- Continuously upgrade knowledge on technology changes, evaluate impact to application, and implement changes to ensure minimal latency in application availability to users.
- Work closely with project/product managers while effectively working across multiple projects and delivering to deadlines.
- Mentor the team members on the nuances of technology and implement best practices within the team.
Who We are?
At e6data (https://e6x.io/" target="_blank">https://e6data.io) we’re building core algorithms that make querying 25 - 200X more performant (i.e. faster and/or cheaper) than every other analytics platform in the world. This results in billions of dollars of value unlocked across faster analytics, savings on computing/infra, and new use cases become possible.
Our core team has 100+ years of combined experience and 10+ patents across diverse but complementary disciplines like real-time databases, time-series databases, SQL OLAP engines, distributed computing platforms, stream processing, and log analytics. Two of the founding team are second-time founders with past exits.
We are passionate about solving the deepest and most important problems in computer science and believe in making our technology available to customers regardless of their location, size, or budget. Our vision is for e6data to power every analytical workload in the world - regardless of deployment scenario (cloud, on-premise, edge), across every use case (end-user queries, ETL / data pipelines), and every latency requirement (batch, streaming / real-time).
What you will do?
- Write awesome code
- Your primary focus will be on building our product around our core algorithms. You will collaborate with our Performance Engineering and DevOps teams.
- Identify tactical and long-term product improvements (could be code, script, etc.) so that e6data development is based on frictionless onboarding of customers
- Build our internal Data Platform using e6data
- Adding scalable functionality to the core e6data engine for new features like UDFs, SQL functions, etc
What we are looking for?
- Worked with Java for a minimum of 4 years
- Knowledge of SQL Query planning will also be good to have
- A passion for continuous learning and growth (both at a personal and team level)
- Strong team player
- Experience (or enjoys) working in a startup will be an added advantag
| Upgrade existing Java (1.6) application running on Apache Tomcat to new Java (1.8) version and new Apache Tomcat version |
| Make necessary code changes for porting application to new Java versions and Tomcat versions |
| Set up new application environments for Dev, SIT and Production |
| Perform unit testing and support user testing. |
| Deploy new upgraded application in production |
| Provide post implementation support. |
| Analyze and resolve defects coming out of testing and post production deployment. |
| Modify existing application code to use Sql Server as backend. |
| Develop Java code as needed. |
Job Summary:
– We are looking for a kick ass software engineer with exceptional skills in data structures, algorithms, core java, and distributed systems. If you think you have it in you to deliver on aggressive timelines, have the hunger for growth, don’t like giving excuses, contribute to product features, be hands-on and deliver a world-class product, then we want to hear from you.
This is a predominantly back-end engineering role.
– You are a rockstar engineer with proven capabilities working on SaaS product and a passion for writing exception code.
– You are hungry for an opportunity to join a start-up and become a member of core platform team driving the company forward.
– You will be responsible for the delivery of product features as a part of the platform engineering team.
– You will be hands-on working on key features of the product.
– You will be responsible for design of back-end architectural changes and product features.
– You will have plenty of opportunity to learn and implement ideas to build products in efficient and cohesive manner.
– Understand the product mission, goals, and tasks and execute with the team to achieve them.
– Understand the design and architecture and build modules in accordance with it or recommend and make the necessary changes that adds more stability to our product.
Eligibility:
– 4+ years of experience with hands-on experience in Core Java/Kotlin
– 2+ years of experience as a technical architect with responsibility for core features
– 4+ years of working experience in cloud-based systems
– 2+ years of experience working on distributed systems
– 2+ years of experience working on Kafka and Zookeeper
– Experience working on RxJava/ Reactive Programming
– Adept on design patterns and distributed systems
– Excellent verbal and written communication
– Proficient in building REST APIs to interact with relational and non-relational data sources
– Proficient in SQL and RDBMS
– Hands on experience in code and system optimization
– Experience in working with NoSQL databases is a plus








