
Java Developer – Job Description
Wissen Technology is now hiring 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 consultancy.
Required Skills:
• Exp. - 2 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 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.

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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Job Title : Senior Java Developer (Telecom Domain)
Experience : 6 to 10 Years
Location : Nagpur, Maharashtra
Job Summary :
We are looking for a Senior Java Developer with strong experience in the Telecom domain to design and develop enterprise messaging applications.
The ideal candidate should have hands-on expertise in Java, Kannel SMS Gateway, SMPP protocol, and telecom messaging platforms, along with experience building scalable REST APIs and microservices.
Mandatory Skills :
Java 8/11/17, Spring Boot, Spring Framework, Hibernate/JPA, REST APIs, Microservices, Kannel SMS Gateway, SMPP Protocol, Telecom Messaging Platforms, SMSC Integration, SQL, Linux, Git, CI/CD, Telecom Domain Experience.
Key Responsibilities :
- Design, develop, and maintain Java-based enterprise applications.
- Develop and integrate SMS solutions using Kannel SMS Gateway and SMPP.
- Build REST APIs and Microservices using Spring Boot.
- Integrate with SMSCs and telecom messaging platforms.
- Optimize application performance, reliability, and scalability.
- Troubleshoot production issues and collaborate with cross-functional teams.
- Perform code reviews and mentor junior developers.
Required Skills :
- 6 to 10 years of Java development experience.
- Strong expertise in Java 8/11/17, Spring Boot, Spring MVC, Hibernate/JPA.
- Hands-on experience with Kannel SMS Gateway and SMPP protocol.
- Experience with Telecom SMSCs and messaging platforms.
- REST APIs, Microservices, SQL (MySQL/PostgreSQL/Oracle).
- Linux/Unix, Git, CI/CD pipelines.
- Strong debugging and problem-solving skills.
Preferred Skills :
- Kafka, RabbitMQ, or ActiveMQ.
- Docker & Kubernetes.
- AWS, Azure, or GCP.
- Redis and monitoring tools (Grafana, Prometheus, ELK).
- Experience with Agile/Scrum.
Mandatory Requirement :
Candidates must have prior Telecom industry experience with hands-on working knowledge of SMPP, SMSC, and Kannel SMS Gateway. Profiles without Telecom messaging experience will not be considered.

Client Company is a profitable, rapidly scaling unicorn which is extremely well capitalized. Client has a very strong moat in the consumer lending space on the back of which it is entering into additional large markets such as E-comm and UPI.
Client company is now entering its next phase of growth from a fast-scaling startup to a robust, high-scale financial platform serving millions of users daily. You'll design systems built for 10x100x growth, make the key technical trade-off calls, and stay deeply hands-on. Beyond building, you'll mentor engineers and work directly with founders and product teams to translate business goals into scalable, reliable systems.
This role is an opportunity to:
- Shape the next-generation architecture for a high-throughput fintech system
- Build systems designed to scale 10x–100x from current volumes
- Solve real-world problems across performance, reliability, and financial-grade security
Responsibilities
- Design and evolve the platform architecture to support 10x–100x growth
- Own systems end-to-end from the first design decision to production impact
- Lead system design discussions and set the long-term technical direction for the platform
- Identify scale bottlenecks early and drive solutions
- Mentor and elevate engineers through design reviews, code quality, and architectural thinking
- Partner directly with founders and product teams to turn business priorities into scalable systems
- Operate with high ownership in a fast-paced environment where priorities evolve quickly
- Drive projects independently own timelines, coordinate with teams, and see delivery
- Conduct rigorous code reviews and champion engineering best practices across the team
- Proactively identify gaps in the system and come up with concrete approaches to address them
- Solve technical problems across the company not just confined to a single pod
- Challenge existing architecture with data and reasoning push back when it’s the right call, and drive adoption of better approaches.
Requirements
- 7–12 years of experience in backend or platform engineering
- Strong computer science fundamentals (preferably from IIT, BITS, NITs)
- Strong proficiency in backend development (Node.js, Java, Go, or equivalent)
- Proven experience scaling systems through high-growth startup phases (1→10 or beyond)
- Track record of building and owning critical platforms or systems from scratch
- Exposure to high-volume transactional systems; fintech or lending is a strong plus
- Bias for action - moves fast, makes sound decisions, owns outcomes end-to-end
- Comfortable navigating ambiguity and evolving priorities in a startup environment
- Strong problem-solving skills ability to break down complex technical challenges and arrive at pragmatic, well-reasoned solutions
- Hands-on experience with platform engineering developer tooling, shared services, infrastructure abstractions, or internal platforms
Role Description
This is a full-time remote role for a JAVA Spring Boot backend API developer. The Java Software Developer will be responsible for developing, testing, and maintaining APIs. Daily tasks include develop and test apis, coding in Java Spring Boot, and collaborating with cross-functional teams. The engineer will also work with the Spring Framework to develop scalable and efficient APIs.
Requirements
- Strong skills in Java and Spring Boot Programming
- Experience with Software Development and Microservices
- Knowledge of the Spring Framework
- Write clean, efficient, and maintainable code following best practices.
- Proficiency in databases such as MySQL, PostgreSQL, or MongoDB.
- Excellent problem-solving and analytical skills
- Experience with version control systems (Git, GitHub, GitLab, or Bitbucket).
- Ability to work independently and remotely
Come be a part of our growth journey! Submit your CV to https://technorexinfoways.com/career today.
Desired Experience
3+ years
Job Description
What You’ll Do
- Design financial systems for scale. Measure, plan, iterate.
- Writing reusable, testable, and efficient code
- Design and implementation of low-latency, high-availability, and performant applications
- Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
- The tech: Go, Google Cloud Spanner, Kafka, Redis
What you bring to the table
- 3+ years of experience. Relevant experience is preferred.
- Knowledge of 2 common programming languages - Python & Go / Java & Node / Rust
- Comfortable in linux command line, AWS or GCP
- Strong unit test and debugging skills
- Great communication skills
Bonus if you have…
- Love building great products and engineering systems from scratch
- Are a Self-starter, Hustler and Curious to Learn
- Have an understanding of fundamental design principles behind a scalable application
- Thrive in an early-stage startup environment with less stability and more ambiguity
- Have an interest in financial products and/or cryptocurrency
· Core responsibilities to include analyze business requirements and designs for accuracy and completeness. Develops and maintains relevant product.
· BlueYonder is seeking a Senior/Principal Architect in the Data Services department (under Luminate Platform ) to act as one of key technology leaders to build and manage BlueYonder’ s technology assets in the Data Platform and Services.
· This individual will act as a trusted technical advisor and strategic thought leader to the Data Services department. The successful candidate will have the opportunity to lead, participate, guide, and mentor other people in the team on architecture and design in a hands-on manner. You are responsible for technical direction of Data Platform. This position reports to the Global Head, Data Services and will be based in Bangalore, India.
· Core responsibilities to include Architecting and designing (along with counterparts and distinguished Architects) a ground up cloud native (we use Azure) SaaS product in Order management and micro-fulfillment
· The team currently comprises of 60+ global associates across US, India (COE) and UK and is expected to grow rapidly. The incumbent will need to have leadership qualities to also mentor junior and mid-level software associates in our team. This person will lead the Data platform architecture – Streaming, Bulk with Snowflake/Elastic Search/other tools
Our current technical environment:
· Software: Java, Springboot, Gradle, GIT, Hibernate, Rest API, OAuth , Snowflake
· • Application Architecture: Scalable, Resilient, event driven, secure multi-tenant Microservices architecture
· • Cloud Architecture: MS Azure (ARM templates, AKS, HD insight, Application gateway, Virtue Networks, Event Hub, Azure AD)
· Frameworks/Others: Kubernetes, Kafka, Elasticsearch, Spark, NOSQL, RDBMS, Springboot, Gradle GIT, Ignite
Please find below updated JD for Java requirement.
-Work with a performance-oriented team driven by ownership and open to experiment.
- -6+ years of Java advanced software development experience, with concurrent (multi-threaded) programming highly desirable.
- -Strong experience on Core Java 8, Java EE, Spring Boot, Maven and Docker including Multi-threading.
. -Strong problem solving skills, computer science fundamentals, data structures and algorithms.
- -Hands on experience with any SQL Database.
- -Ability to learn new technologies like ELK, stack, redis etc.
- -Must have expert level knowledge in Java, Springboot.
- -Must have knowledge or hands on experience in microservices, apache kafka and distributed caching.
. -Experience in distributed/scalable systems
- -Strong knowledge of design patterns and software engineering best practices.
- -Familiarity with standard development tools and processes: Git, Eclipse, JUnit test, debugging, profiling, etc.
. -Familiarity with CI/CD and DevOps
. -Strong knowledge and previous experience in end-to-end design, development and subsequent
support of large-scale data processing systems
. - Familiarity and confidence working in an agile development environment.
. - Good Problem solving skills
- - Good oral and written communication skills.
- - Strong debugging skills.
1. Cloud Backend Design along with data storage and backup solutions. 2. Backend APIs and System Design and Integration with IoT Devices, web and mobile applications.
3. Building reusable code and libraries for future use
4. Optimization of the application for maximum speed and scalability
5. Implementation of security and data protection
6. Design and implementation of data storage solutions
Required Skills:
1. Demonstrated history of designing and implementing Cloud-based Microservices Applications using AWS or GCP.
2. 5+ years of hands-on experience using core Java and SpringBoot framework.
3. Good Understanding of Serverless Architecture and Event-Driven Systems.
4. Understanding Product requirements and translating them into technical specifications and development using Agile methodology.
5. Understanding accessibility and security compliance on AWS/GCP and Spring Boot and Flask.
6. Good understanding of Data structures and Algorithms.
7. AWS Skills Required: AWS Lambda, DynamoDB, SNS, SQS, S3, IoT Core, Kinesis Streams, Elastic Beanstalk, EC2, IAM, Elastic Cache, API Gateway.
Good To have:
1. Knowledge of Kubernetes or other container orchestration tools.
2. Python and Flask.
3. Google Cloud Platform and Firebase
Are you looking for a Senior Backend Engineer role in a high growth startup? Are you eager to learn and make a difference at work every day? If so, then read on.
At PlumQR, we work on revolutionizing the Food & Beverage industry with our cloud-based tech products. Millions of businesses across the world are switching for better, smarter & more hygienic products to reinvent their businesses. If you have what it takes to innovate & lead, we have just the right opportunity for you.
Requirements
- Minimum 3 years as a Senior Backend Engineer
- Strong software development experience in a SaaS product company
- Significant experience with NodeJS, React.js, React Native, MySQL, MongoDB, Java
- Cloud computing services (e.g. Google Cloud Platform)
- Strong problem-solving skills
- Ability to explain technical details to people inside the company
• Work with product team to understand product vision and requirements
• Solve complex technical problems and perform the code reviews for junior team members.
• Produce deliverables at a consistently high rate and with consistently excellent quality
• Work with a team of engineering professionals to ensure the highest quality product delivery
As a member of our team, you will be responsible for insuring the successful launch of many product features.
Key responsibilities
• Work in a product based R&D team and collaborate with other teams to integrate.
• Write code that is of high quality and consistent with our coding standards
• Analyze highly complex business requirements, break the requirements to multiple applications; generate technical
specifications to design or redesign complex software components and applications
• Maintain best practices for development/code changes as needed
• Design and architect software applications
• Conducting code reviews and enforcing the quality standards
• Conducting the daily SCRUM meetings and removing the roadblocks
• Performance testing and tuning for scalability
• Develop quick proof of concepts to set the technical direction for rest of the team.
• Work with Devops and Automation team to develop automation strategy for your application.
Requirements
• Bachelor’s Degree (Masters preferred) in Computer Science or related field
• 3+ years of software development experience on web applications
• Experience in working in an onsite and offshore development model
• Must have hands-on design and development experience in Cloud (GCP/AWS/Azure), Kubernetes, Microservices,
Java, J2EE, Spring/Boot, Hibernate, JUnit and Integration with front end via rest interfaces.
• Must have Hands-on experience in Multi-threading, Non-blocking IO, Kafka, JMS
• Strong integration background required. Experience with Microservices, REST, JSON and APIs is required
• Experience with as many of the following is highly desirable: Tomcat, Node.js, XML, XSLT, XPath, Web Services,
MongoDB, MYSQL, and query performance tuning
• Experience with code management and continuous integration techniques and tools such as Maven, Gradle, Github,
JMeter, Jenkins, NPM etc. is highly desirable
• Experience building complex software systems that have been successfully delivered to customers
• Strong Computer Science fundamentals and working knowledge in data structures, algorithms, problem-solving and
complexity analysis
• Knowledge of professional software engineering practices and best practices for the full software development life
cycle (SDLC), including coding standards, code reviews, source control management, build processes, testing, and
operations
• Proven ability to troubleshoot issues in production including root cause analysis
• Self-directed and capable of working effectively in a highly innovative and fast-paced environment
• Experience with Agile software development in a UNIX/Linux environment
• Experience with system architecture/design
Qualifications
• Passionate about technology and technical challenges of all types excite you
• Eagerness to learn and learn fast, enjoy working in a fast-paced environment
• Ability to develop detailed design and deliver a scalable implementation.
• Mentor developers in analysis, design, coding and unit testing techniques
• Motivated self-starter and team player; you inspire others to achieve great things
• Driven to provide the best customer experience via technology
• Supply chain industry experience is preferred
• Proven ability to work effectively in a cross-functional team
• Strong problem solving and troubleshooting skills with the ability to come up with creative solutions for different
problems
• Strong written/spoken communication skills
• Experience with distributed systems operating in a scalable/high volume environment
• Ability to drive innovation
scalability, accessibility, usability, design, and security in mind. If you don't have all
of these, that's ok, but be excited about learning the few you don't know.
Familiar with building complex web applications using Javascript / AJAX, XHTML,
CSS.
Experience with or knowledge of jQuery, Java, Struts, and other website technologies.
Strong, object-oriented design and coding skills (C/C++ and/or Java preferably on a
UNIX or Linux platform)
Solid software development background including design patterns, data structures,
test driven development
Knowledge of Perl or other scripting languages a plus
Experience with distributed (multi-tiered) systems, algorithms, and relational
databases
Software development experience in building highly scalable applications
Master’s degree in Computer Science, Computer Engineering or related technical
discipline
Experience in eCommerce and Deep hands-on technical expertise
Ability to handle multiple competing priorities in a fast-paced environment
Experience working with service oriented architectures and web based solutions.









