
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.
Connect with the team
Similar jobs
About the role:
You will own a functional area - from product conception to its delivery to customers. You are expected to design and code independently in multiple tech components related to your functional area. You must also develop a deep understanding of non-functional requirements, such as reliability and availability, scale, horizontal scalability, etc. over time to make tech stack decisions accordingly. You are expected to actively mentor junior engineers. You own
the codebase quality.
We are looking for seasoned engineers who are quality-conscious, product thinkers, business cognizant and smart. Engineers get to significantly amplify the impact of their work or creations with scale. The scale also demands that engineers to produce super-efficient solutions.
What you’ll do
- Strong experience with Java 8, Spring and Spring Boot, Spring MVC, Spring Data,
- Working experience in Microservices
- Version Control: Git
- Strong understanding of functional/reactive programming, OOP, design
- Experience with Docker and Kubernetes.
- SDLC: Working experience in Agile methodology
- Strong interpersonal skills and time management skills
What you’ll need
- B.Tech or M.Tech equivalent with at least 3 years of experience
- Deep expertise in at least one programming language & tech stack.
- Strong object-oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
- Experience in building data-driven web application design and development is a plus
- Good understanding of multiple tech solutions and ability to pick the correct one for the given situation
- Prior work experience in an agile environment or continuous integration and continuous delivery (CI or CD)
- Ability and experience in designing high-level software designs of the scalable system, taking NFR (non-functional requirement) into consideration
Who we are: My AI Client is building the foundational platform for the "agentic economy," moving beyond simple chatbots to create an ecosystem for autonomous AI agents and they aim to provide tools for developers to launch, manage, and monetize AI agents as "digital coworkers."
The Challenge
The current AI stack is fragmented, leading to issues with multimodal data, silent webhook failures, unpredictable token usage, and nascent agent-to-agent collaboration. My AI Client is building a unified, robust backend to resolve these issues for the developer community.
Your Mission
As a foundational member of the backend team, you will architect core systems, focusing on:
- Agent Nervous System: Designing agent-to-agent messaging, lifecycle management, and high-concurrency, low-latency communication.
- Multimodal Chaos Taming: Engineering systems to process and understand real-time images, audio, video, and text.
- Bulletproof Systems: Developing secure, observable webhook systems with robust billing, metering, and real-time payment pipelines.
What You'll Bring
- My AI Client seeks an experienced engineer comfortable with complex systems and ambiguity.
Core Experience:
● Typically 3 to 5 years of experience in backend engineering roles.
● Expertise in Python, especially with async frameworks like FastAPI.
● Strong command of Docker and cloud deployment (AWS, Cloud Run, or similar).
● Proven experience designing and building microservice or agent-based architectures.
Specialized Experience (Ideal):
- Real-Time Systems: Experience with real-time media transmission like WebRTC, WebSockets and ways to process them.
- Scalable Systems: Experience in building scalable, fault-tolerant systems with a strong understanding of observability, monitoring, and alerting best practices.
- Reliable Webhooks: Knowledge of scalable webhook infrastructure with retry logic, backoffs, and security.
- Data Processing: Experience with multimodal data (e.g., OCR, audio transcription, video chunking with FFmpeg/OpenCV).
- Payments & Metering: Familiarity with usage-based billing systems or token-based ledgers.
Your Impact
- The systems designed by this role will form the foundation for:
- Thousands of AI agents for major partners across chat, video, and APIs.
- A new creator economy enabling developers to earn revenue through agents.
- The overall speed, security, and scalability of my client’s AI platform.
Why Join Us?
- Opportunity to solve hard problems with clean, scalable code.
- Small, fast-paced team with high ownership and zero micromanagement.
- Belief in platform engineering as a craft and care for developer experience.
- Conviction that AI agents are the future, and a desire to build their powering platform.
- Dynamic, collaborative in-office work environment in Bengaluru in a Hybrid setup (weekly 2 days from office)
- Meaningful equity in a growing, well-backed company.
- Direct work with founders and engineers from top AI companies.
- A real voice in architectural and product decisions.
- Opportunity to solve cutting-edge problems with no legacy code.
Ready to Build the Future?
My AI Client is building the core platform for the next software paradigm. Interested candidates are encouraged to apply with their GitHub, resume, or anything that showcases their thinking.
Excellent knowledge in Core Java (J2SE) and J2EE technologies.
Hands-on experience with RESTful services, API design are must.
Knowledge of microservices architecture is must.
Knowledge of design patterns is must.
Strong knowledge in Exception handling and logging mechanism is must.
Agile scrum participation experience. Work experience with several agile teams on an application built
with microservices and event-based architectures to be deployed on hybrid (on-prem/cloud)
environments.
Good knowledge of Spring framework (MVC, Cloud, Data and Security. Etc) and ORM framework like
JPA/Hibernate.
Experience in managing the Source Code Base through Version Control tool like SVN, GitHub,
Bitbucket, etc.
Experience in using and configuration of Continuous Integration tools Jenkins, Travis, GitLab, etc.
Experience in design and development of SaaS/PaaS based architecture and tenancy models.
Experience in SaaS/PaaS based application development used by a high volume of
subscribers/customers.
Awareness and understanding of data security and privacy.
Experience in performing Java Code Review using review tools like SonarQube, etc.
Good understanding of end-to-end software development lifecycle. Ability to read and understand
requirements and design documents.
Good Analytical skills and should be self-driven.
Good communication with inter-personal skills.
Open for learning new technologies and domain.
A good team player and ready to take up new challenges. Active communication and coordination with
Clients and Internal stake holder
Requirements: Skills and Qualifications
6-8 years of experience in developing Java/J2EE based Enterprise Web Applications
Languages: Java, J2EE, and Python
Databases: MySQL, Oracle, SQL Server, PostgreSQL, Redshift, MongoDB
DB Script: SQL and PL/SQL
Frameworks: Spring, Spring Boot, Jersey, Hibernate and JPA
OS: Windows, Linux/Unix.
Cloud Services: AWS and Azure
Version Controls/ Devops tools: Git, Bitbucket and Jenkins.
Message brokers: RabbitMQ, and Kafka
Deployment Servers: Tomcat, Docker, and Kubernetes
Build Tools: Gradle/Maven
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
At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation.
Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive.
F5 is looking for Software Engineer II with in-depth experience in high scale distributed systems. You will participate in the design and implementation of of our Edge Computing platform that is used to deploy global, scalable and secure applications. Your work includes, but not limited to, Research, design and build highly reliable, available and scalable platforms, API definition, implementation, deployment, operational management, and debugging.
Responsibilities:
- Deliver solutions that will help create, deploy and manage the service components of the platform
- Investigate various open source and close source technologies, components, libraries, tools etc. and help build a highly available, highly scalable and easily manageable system
- Take ownership of software components and deliver a complete product satisfying functional, scale, performance and manageability requirements.
- Hands-on coding in multiple languages while considering performance, scalability, maintainability, and flexibility
- Understanding and exposure to design patterns and coding practices especially as applied to microservices architectures and API design, implementation and management
- Experience in Cloud native providers like MS Azure or AWS or Google Cloud or any major Cloud vendors in the market and their services
- Independently investigate, present options, review and implement completely new functionality
- You will work closely with other development teams, product management, UX, and QA to define and implement a new product offering while ensuring continued functionality.
- Perform code reviews, set coding practices and guidelines within the team
- Ability to implement all phases of a development cycle for a software product from understanding requirements, going through design, development and deploy phases
- Work with geographically distributed teams
Minimum Qualifications:
- Knowledge and experience in highly distributed software systems, ability to understand the nuances and solve problems related to scale, performance and resiliency of such a system
- Experience in programming languages: Golang, Java, Python any objected oriented high level proprietary or open source language with strong programming constructs.
- Good understanding of programming fundamentals & their application to highly scalable web-based systems
- Experience in developing polyglot software using service definition language and framework like gRPC, Thrift, Google Protocol Buffers, OpenAPI etc.
- Must have hands on SQL or No SQL technologies.
- Experience working on CICD methodology and Git based workflow
- Experience in Docker technologies including experience in optimizing Docker image and managing Docker image lifecycle. Experience in orchestration systems like Kubernetes and container technologies like Docker, rkt is a plus
- Excellent written and verbal communication skills
- Strong interpersonal, team building, and mentoring skills
- BS/MS degree in Computer Science or equivalent with 3+ years of software development experience
You, as a Java Engineer and member of this team, would be working on our new and existing projects for our credit, payments, business services, member engagement or financial crime areas. We have a five years roadmap ahead of us with exciting new features and we’ll need you to solve interesting problems. Your fellow team members will get you up to speed in your business area and will help you develop the skills so that eventually you are the one coaching other new joiners. Joining one of our expanding agile teams, you will be required to work closely with product owners, mobile engineers, and other business members to translate requirements into well-engineered solutions.
You will ideally join our backend Community of Practices, learn from them and eventually propose your own to maintain a high quality across the backend. Career progression is as important to you as it is for us. With our expanding teams and business we will encourage you to outgrow your initial responsibilities. This role offers an exceptional opportunity to make a real difference with responsibilities across engineering practices in a rapidly expanding company!
About the Tech
Technology and our people is what makes Tide possible. We work in autonomous teams where backend, iOS, Android, web, QA, DevOps, agile coaches, data experts and product owners solve difficult problems together to get the job done. We self-organise and discuss technical challenges and set our own guidelines in the different Community of Practices.
On the backend we see Java 8 as legacy and use Java 11+ for our micro-services. We provide RESTful APIs to our colleagues in the frontend, but also use gRPC for internal service-to-service communications. Spring Boot is our work horse, but we are open to new experiments. We are cloud-native and run everything on AWS. You’ll see containers (Docker), queues (SNS+SQS) and events everywhere. The nature of our business naturally fits with relational databases, but we have also found some use cases for NoSQL.
Our frontends have done an incredible job at consuming our APIs and providing the best UX to our members. They are fully native Android and iOS apps or Angular 2+ web apps. DevOps provides vital infrastructure and operations support.
About You
We’re an international scale up, we’re busy! If fast paced environments, cross team exposure, inquisitive freedom and the ability to have a real impact on a rapidly growing scale up appeals to you, then you already have the mind of a Tidean. If you have that along with the following experience, we’d love to hear from you.
The non-negotiables:
- Good commercial experience building server-side applications and detailed knowledge of the relevant programming languages for your stack (i.e Java 8 or newer).
- Sound knowledge of a Java backend framework (e.g. Spring/Spring Boot).
- Exposure to microservices and implementing and consuming RESTful APIs.
- A mindset of delivering secure, well-tested and well-documented software.
- Experience with relational databases.
The highly desirables:
- Exposure to continuous integration, delivery and deployment.
- Some experience integrating to third parties.
- Comfortable working in agile methodologies, ideally Scrum.
- Exposure to common development tools such as IntelliJ, Git, Jira, etc.
Why Tide?
Tide is the leading provider of UK SME business accounts and one of the fastest growing FinTechs in the UK. That’s not an unfounded boast - we have over 200,000 members (what we like to call our customers, over two percent market share, and have raised over £120m in funding.
SMEs have been underserved and overlooked by traditional banks for years. In an entrepreneurial age where everyone is expected to take a shot, traditional banks have not evolved with the needs of the market. That’s where Tide comes in. With quick on-boarding, low fees and innovative features, we thrive on making data driven decisions to help SMEs save both time and money.
We’re also one of LinkedIn’s top 10 hottest UK companies to work for, winner of Best Use of Technology (Growth Finance Awards); Best Banking Provider (Contracting Awards); Innovative Product of the Year (Growth Finance Awards) and we’re listed in the Top 100 FinTech Disruptors and The Startups 100. And that’s just for 2019.
Knowledge on Model to Code Generation
Ability to work independently, with minimal training and direct guidance
Ability to respond to customer inquiries quickly
Ability to quickly modify/setup routes
Familiarity with Rhapsody Secure transmission protocols (e.g. Secure File Transfer (SFT) and Secure Object Access Protocol (SOAP) routes process, etc.
Prior experience with protocols like OSLC, SOAP and REST APIs
Ability to identify and resolve exceptions with electronic data exchange between EMR data submitters, and data recipients.
Knowledge of HL7/XML/FHIR/EDI standards
Strong in building JUnit tests during development
● He/She is a responsive team player who can proactively contribute for building technical
strategies for applications and systems by promoting an understanding of the technology and
business roadmap.
● He /she is someone who thrives in a fun, fast-paced, dynamic, startup-like environment.
● Work very closely with various business stakeholders to drive the execution of multiple
business plans and technologies .
● Work closely with Product, Design, and Marketing to conceive features, plan projects, and
build roadmaps
● Prior experience with scalable Architecture managing team of minimum 5 engineers and
coaching, mentoring while maintaining a role with code development.
● Proven history of contributing to product strategy and shipping products with multi-functional
teams.
● Highly involved in recruitment while building team also leading app development for both
platforms
● Promote and support company policies, procedures, mission, values, and standards of ethics
and integrity.
Minimum Qualification:
● Hands-on working on Java ( {Language understanding - Java 8, Lambdas, Collections,
popular frameworks & libraries}, JVM, GC tuning, performance tuning)
● Worked on REST frameworks/libraries like Spring MVC, Spring Boot, Dropwizard, REST
Express etc
● Worked on Relational data stores viz. MySQL, Oracle or Postgres
● Worked on Non-relational data stores viz. Cassandra, HBase, Couchbase, MongoDB etc
● Worked on caching infra viz. Redis, Memcached, Aerospike, Riak etc
● Worked on Queueing infra viz. Kafka, RabbitMQ, ActiveMQ et
Reporting to: Solution Architect / Program Manager / COE Head
Location: Noida, Delhi NCR
Shift: Normal Day shift with some overlap with US timezones
Experience: 4-7 years
Education: BTech / BE / MCA / MSc Computer Science
Industry: Product Engineering Services or Enterprise Software Companies
Primary Skills - Java 8/9, Core Java, Design patterns (more than Singleton & Factory),
Webservices development REST/SOAP, XML & JSON manipulation, CI/CD.
Secondary Skills - Jenkins, Kubernetes, Google Cloud Platform (GCP), SAP JCo library
Certifications (Optional): OCPJP (the Oracle Certified Professional Java Programmer) / Google
Professional Cloud Developer
Required Experience:
● Must have integration component development experience using Java 8/9 technologies
and service-oriented architecture (SOA)
● Must have in-depth knowledge of design patterns and integration architecture
● Experience with developing solutions on Google Cloud Platform will be an added
advantage.
● Should have good hands-on experience with Software Engineering tools viz. Eclipse,
NetBeans, JIRA, Confluence, BitBucket, SVN etc.
● Should be very well verse with current technology trends in IT Solutions e.g. Cloud
Platform Development, DevOps, Low Code solutions, Intelligent Automation
Good to Have:
● Experience of developing 3-4 integration adapters/connectors for enterprise applications
(ERP, CRM, HCM, SCM, Billing etc.) using industry standard frameworks and
methodologies following Agile/Scrum
Non-Technical/ Behavioral competencies required:
● Must have worked with US/Europe based clients in onsite/offshore delivery model
● Should have very good verbal and written communication, technical articulation, listening
and presentation skills
● Should have proven analytical and problem solving skills
● Should have demonstrated effective task prioritization, time management and
internal/external stakeholder management skills
● Should be a quick learner, self starter, go-getter and team player
● Should have experience of working under stringent deadlines in a Matrix organization
structure
● Should have demonstrated appreciable Organizational Citizenship Behavior (OCB) in
past organizations
Job Responsibilities:
● Writing the design specifications and user stories for the functionalities assigned.
● Develop assigned components / classes and assist QA team in writing the test cases
● Create and maintain coding best practices and do peer code / solution reviews
● Participate in Daily Scrum calls, Scrum Planning, Retro and Demos meetings
● Bring out technical/design/architectural challenges/risks during execution, develop action
plan for mitigation and aversion of identified risks
● Comply with development processes, documentation templates and tools prescribed by
CloudSufi or and its clients
● Work with other teams and Architects in the organization and assist them on technical
Issues/Demos/POCs and proposal writing for prospective clients
● Contribute towards the creation of knowledge repository, reusable assets/solution
accelerators and IPs
● Provide feedback to junior developers and be a coach and mentor for them
● Provide training sessions on the latest technologies and topics to others employees in
the organization
● Participate in organization development activities time to time - Interviews,
CSR/Employee engagement activities, participation in business events/conferences,
implementation of new policies, systems and procedures as decided by Management team.








