
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. - 5 to 12 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.

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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Team -Support Operations — Technical Solutions
Level - IC3 (4–7 years of relevant experience)
Location - India (Remote) IST time zone, with overlap with US East/Central teams
Reports To -Technical Manager
Manages -Not a people-manager role, but a lead role with real technical authority
Employment Type -Full-time
ABOUT DELTEK
Deltek is the leading global provider of software and solutions for project-based businesses — serving government contractors, professional services firms, and architecture & engineering companies. Our products help customers manage the full project lifecycle, from winning work and planning resources to executing delivery and getting paid.
The Support Operations Technical Solutions team sits inside Deltek's Customer Success organization. We build and maintain the internal tooling, integrations, and AI-powered workflows that allow Deltek's support and customer success teams to operate at scale — intelligent case routing, knowledge-base agents, data pipelines between Salesforce, Gainsight, and Oracle Service Cloud, and automation that removes manual work from high-volume support processes.
THE ROLE
We are looking for a Senior System Engineer to take technical ownership of our most complex solutions. This is not a management role — it is a senior individual contributor role with real architectural authority and a multiplier effect on the team around you.
You own problems end-to-end. You design the solution before writing the first line, consider downstream impacts before committing to an approach, and hold the technical bar for the work your team delivers. You are the person a junior engineer turns to when they're stuck, and the person a business stakeholder trusts to tell them whether an idea is feasible and what it will cost to maintain.
In your first year, you can expect to:
- Own the end-to-end design and delivery of major integrations and AI-enabled components from architecture through deployment and post-launch stability
- Lead solution design for the team's most complex problems using PHP, JavaScript, Workato, APIs, and Web Services
- Evaluate technology and platform tradeoffs and make defensible, documented recommendations that balance short-term delivery with long-term maintainability
- Apply AI, automation, and agentic architectures to business problems at production scale — not as experiments, but as shipped systems
- Anticipate performance, operational, and security risks before they reach production; design with those constraints in mind from day one
- Set engineering standards and review the work of IC1/IC2 engineers, making them better through structured feedback and clear design expectations
- Partner directly with CS operations leadership and cross-functional stakeholders to translate ambiguous business needs into concrete technical strategies
This role suits an engineer who is past proving they can build things, and is now focused on building the right things in the right way — and helping others do the same.
WHAT WE'RE LOOKING FOR
Must-Have Technical Skills
- PHP and JavaScript: Production depth: You have designed and shipped non-trivial systems in these languages. You understand performance characteristics, know where the footguns are, and write code you'd be comfortable having reviewed by a senior peer.
- Integration architecture: You have designed system-to-system integrations — not just consumed APIs. You understand data flow, transformation logic, error handling, retry strategies, and idempotency.
- AI / LLM applied experience: You have built or led the build of AI-assisted workflows, LLM-based tools, or agentic systems in an operational or product context. You know the difference between a demo and a production-grade AI system.
- Relational databases: Query and schema design: You write optimized SQL, design schemas with long-term maintainability in mind, and understand when a query will cause production problems before it does.
- Full-stack troubleshooting at depth: You can diagnose complex, multi-layer issues — across front-end, API, back-end, and database — and trace the root cause without being handed a reproduction case.
- Technical tradeoff analysis: When evaluating tools, platforms, or approaches, you can articulate the tradeoffs clearly — not just pick what you know best — and document the rationale in a way that holds up six months later.
- Agile technical leadership: You have led technical workstreams in a sprint-based environment: broken down epics, written meaningful acceptance criteria, and been accountable for team delivery quality.
- Documentation and design artifacts: You produce architecture diagrams, solution designs, and technical decision records that others can act on — not just notes for yourself.
Must-Have Leadership & Soft Skills
- Technical mentorship: You actively make the engineers around you better. Code reviews are teaching opportunities, not gatekeeping. Design reviews are conversations, not approvals.
- Stakeholder communication: You can translate a technical constraint into a business impact, and a business requirement into a technical specification. You don't hide behind jargon or over-simplify to avoid hard conversations.
- Ownership under ambiguity: When a problem is poorly defined, you ask the right questions to define it — then own the answer. You don't wait for complete requirements before starting to think.
- Proactive risk management: You raise issues before they become incidents. You've learned from production failures and carry those lessons into design decisions.
- Business context awareness: You understand how the systems you build affect end users and business operations. You've made engineering decisions informed by that context, not just by technical preference.
Nice-to-Have Skills
Prioritized by relevance to this team's current and near-term roadmap:
Oracle Service Cloud
Workato / iPaaS
Salesforce
Gainsight
Agentic AI / LLM Ops
Snowflake
Microsoft Power BI
Microsoft Power Apps
Cloud-native development
Experience designing agentic AI systems — not just integrating LLM APIs — is highly relevant to where this team is going. Candidates who have shipped multi-step agent architectures with tool-calling, memory, and guardrails will stand out.
RESPONSIBILITIES
Design & Architecture
- Own end-to-end technical solution design — from requirements through architecture, implementation, and post-launch stability — for the team's most complex initiatives
- Lead solution design using PHP, JavaScript, Workato, APIs, and Web Services; ensure solutions are scalable, maintainable, and aligned with established governance standards
- Evaluate tradeoffs across tools, platforms, and architectural patterns; produce documented recommendations that account for both short-term delivery needs and long-term operational cost
- Anticipate downstream impacts, performance bottlenecks, and operational risk during the design phase — not as an afterthought in retrospect
- Author and maintain Architecture Decision Records (ADRs) and technical design documents for all major solution components
AI, Automation & Integration
- Apply AI, automation, and agentic architectures to complex business problems at production scale — designing for reliability, observability, and graceful failure
- Lead the integration of AI-enabled components (LLM workflows, intelligent routing, agentic tools) into the team's operational platform
- Design and oversee integrations between Deltek's CS platforms (Oracle Service Cloud, Salesforce, Gainsight) and internal data systems, ensuring data integrity, performance, and auditability
- Evaluate new AI frameworks, LLM providers, and automation platforms; provide grounded, implementation-level recommendations rather than theoretical assessments
Technical Leadership & Mentoring
- Serve as the primary technical reviewer for IC1/IC2 engineers — conducting structured code and design reviews that build capability, not just ship code
- Break down complex initiatives into well-scoped workstreams that junior engineers can execute with confidence and appropriate independence
- Establish and enforce engineering standards: code quality, documentation, testing coverage, deployment practices, and incident response
- Identify skill gaps in the team and work with the manager to address them through pairing, documentation, or structured learning
Stakeholder & Cross-functional Engagement
- Translate ambiguous business and operational requirements from CS leadership into concrete technical strategies with clear milestones and measurable outcomes
- Engage directly with senior stakeholders — CS operations leads, product owners, IT — to align on priorities, surface risks, and manage technical expectations
- Represent the technical perspective of the team in cross-functional planning and architecture discussions
Operate & Improve
- Own post-launch stability of solutions you design: monitor, respond to incidents, and drive root-cause resolution — not just resolution
- Drive continuous improvement of the team's delivery practices: identify process friction, propose solutions, and follow through on implementation
- Stay current on AI, automation, and integration technology evolution; bring relevant advances back to the team with a concrete point of view on applicability
QUALIFICATIONS
- Education: Bachelor's degree in Computer Science, Electrical or Electronics Engineering, or a related technical discipline. Equivalent demonstrated experience considered.
- Experience: 4–7 years of hands-on experience in software engineering, systems integration, or closely related work, with at least 2 years at a level where you have owned technical design decisions — not just implemented them.
- Coding evidence: A portfolio, GitHub profile, architecture document, or production system you can speak to in depth. At IC3, we expect you to be able to walk through a non-trivial design decision you made and defend the tradeoffs.
- AI / ML: Practical, production-level experience with LLMs or AI tooling — not just prompt engineering or personal experimentation. Familiarity with frameworks such as LangChain, OpenAI APIs, or similar platforms is a strong plus.
- Collaboration model: Comfortable working as a technical authority in a distributed team. The role requires regular IST overlap with US East/Central stakeholders (approximately 6:30 PM – 10:30 PM IST for at least part of the week).
- Language: Strong written and spoken English. At IC3, much of your influence operates through written design documents, async reviews, and stakeholder communications. Precision in writing matters.
WHAT TO EXPECT WORKING HERE
- Technical authority with real impact — your design decisions ship to production and affect how thousands of Deltek customers experience support
- Exposure to production AI/agentic systems and direct involvement in shaping where the team's AI roadmap goes next
- A team where senior engineers are trusted to lead, not managed step-by-step — you will have autonomy commensurate with your accountability
- Structured growth path: IC3 engineers who demonstrate architectural leadership and cross-functional influence have a clear track toward Staff or Associate Director scope
- Regular 1:1s, design review forums, and a manager who will invest in your growth rather than just your output
Key Responsibilities :
- Design, develop, and maintain Java-based applications using Java SE/EE.
- Implement, test, and deploy microservices and RESTful APIs using Spring Boot and related technologies.
- Develop efficient and scalable solutions by writing clean, maintainable, and optimized code.
- Collaborate with cross-functional teams to understand business requirements and provide technical solutions.
- Write and execute unit tests using JUnit to ensure code quality and functionality.
- Perform code reviews to ensure adherence to best practices and coding standards.
- Troubleshoot, debug, and optimize code for performance and scalability.
- Stay up to date with the latest Java technologies and development best practices.
Required Skills and Qualifications :
- Bachelor's degree in Computer Science, Engineering, or a related field.
- Years of experience in Java development (Java SE/EE, Spring, Hibernate).
- Strong experience with JUnit and test-driven development (TDD).
- Proficient in building microservices using Spring Boot and RESTful APIs.
- Experience with version control tools like Git.
- Familiarity with build tools such as Maven or Gradle.
- Strong understanding of object-oriented programming (OOP) principles.
- Familiarity with databases (SQL/NoSQL) and ORM frameworks (e.g., Hibernate).
- Experience with cloud platforms like AWS (preferably).
- Strong problem-solving skills and the ability to work in a collaborative environment.
Preferred Skills :
- Experience with continuous integration/continuous deployment (CI/CD) tools.
- Knowledge of containerization technologies like Docker.
- Familiarity with Agile methodologies and Scrum framework.
- Knowledge of front-end technologies (HTML, CSS, JavaScript) is a plus.
- Strong experience in Core Java, Multi-Threading, data structures (List/Map/Set) and unit testing
- with (Junit, Mockito)
- Strong experience with Spring Framework (Spring MVC, Spring REST, Spring Data), ORM
- frameworks (JPA, Hibernate) and RDBMS (Oracle/MySQL/Postgres)
- Strong experience in applying Object-Oriented design principles and Design Patterns
- Good knowledge of Multi-Tier architecture, Micro Services architecture and Service Oriented
- Architecture
- Exposure to AWS Cloud, NoSQL Database (Mongo, Cassandra), Message Broker (Active
- MQ/RabbitMQ/Apache Kafka) and Big Data Technologies (Hadoop/Hive/Spark)
- Additionally, must possess capability to review code, produce technical specification document
- and knowledge of code quality tools (PMD/FindBugs/Sonar)
About Company
Our client is in the business of delivering cutting-edge software solutions, hardware systems, and IT services. It lends the right technological edge to governments and businesses. This enables them to achieve their organizational objectives efficiently and effectively to scale their businesses to newer heights.
Minimum Requirements/Qualifications:
• Bachelor’s/Master’s degree in computer science, Computer Engineering or a related field is preferred.
• Must have at least 5 to 7 years of experience in application development (Java,Spring Framework), Deployment(Apache Tomcat & Nginx)
• Sound knowledge of Object-Oriented Programming (OOP) Patterns and Concepts.
• Knowledge & hands-on experience of Java, Spring Framework, Spring Security, JSP, Apache Tomcat, Nginx is a must.
• Must have experience with Bootstrap CSS, jQuery etc.
• Basic Understanding of PostgreSQL, MVC (Model-View-Controller) Pattern, JDBC (Java Database Connectivity), and RESTful web services.
• Relevant Knowledge of Java GUI frameworks according to project requirements.
• Experience in handling external and embedded databases.
Roles & Responsibilities
• Develop new modules, patches & Updates/upgrades for an existing application (developed in-house by the client)
• Bug fixing, and updating of software.
• Analyze user requirements to define business objectives.
• Maintain Java-based applications that can be high-volume and low-latency.
• Identify and resolve any technical issues arising.
• Write well-designed, testable code.
• Conducting software analysis, programming, testing, and debugging.
• Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review.
TAPPP is leading the charge in bringing premium digital entertainment content & live sports to global consumers via its prepaid platform. TAPPP is available across platforms via the Web, Mobile and Tablets. Building out this brand presents significant product and engineering challenges. At the centre of solving those challenges is the TAPPP Product Engineering team which is responsible for the TAPPP product end to end.
We are looking for a coding enthusiast who love working with code and developing software systems.
You will be a part of the core product development team that is responsible for building different components of the TAPPP platform. You will be responsible for designing, coding, reviewing, testing, bug-fixing different modules of the software product that needs to work seamlessly across different environments.
The organization is flat, process is minimal, individual responsibility is big, and there is an emphasis on keeping non-productive influences out of the everyday technical decision making process. Upholding these philosophies will be imperative as we execute our aggressive plan of global expansion over the next 2 years. The position is based in Mumbai, India.
Here is what we are looking for:
• Deep product development experience and sound understanding into these technologies
• Java/J2EE
• Spring
• Hibernate
• RESTful API's
• MySQL
• Tomcat 7
• Exposure on Grails & Amazon AWS will be a plus point
• Strong independent contributor
• An unquenchable desire to learn, attention to detail with a can-do attitude
• Comfortable working in a start-up environment
Our client is a rapid growth stage Edtech start-up focused on solving the teacher shortage crisis in the US education system using technology by bringing teachers to the classrooms and giving them access to the right tools to teach students in a highly engaging manner.
They have a development center in Mumbai and they are looking to scale up the teams in Pune and Bangalore as well.
What does the role entail:
● Lead User Stories and guide senior/software engineers in the development process
● Understand architecture principles, design patterns and implement them from architectural artifacts.
● Provide effort estimation of assigned work and be able to complete as per the estimations and timelines
● Write clean, maintainable, and efficient code including unit tests and integration tests to ensure software quality
● Collaborate with cross-functional teams to analyze requirements, design solutions, and implement new features
● Participate in design and code reviews
● Ability to resolve performance issues
● Mentor junior software engineers and help them grow their technical skills
Must Have Skills:
● B.E/B.Tech in computer science
● 8-11 years of experience
● Hands-on experience following skills
MS Technologies: NET CORE 5+, C#
Backend : MSSQL /MySQL/Postgres
● Good understanding of Cloud technologies like Azure/AWS.
● Good understanding of Design Principles, Design patterns and Microservices Architecture.
● Excellent problem-solving, critical thinking, and communication skills
● Worked in an Agile software development environment
Must understand full stack development frameworks including knowledge of building scalable APIs, interfaces, software components, schema design, availability, and latency preferably in a cloud environment.
● Worked in a fast-paced environment preferably in a tech driven startup
● Understanding of different types of architectures.
Java Developer Responsibilities:
- Designing and implementing Java-based applications.
- Analyzing user requirements to inform application design.
- Defining application objectives and functionality.
- Aligning application design with business goals.
- Developing and testing software.
- Debugging and resolving technical problems that arise.
- Producing detailed design documentation.
- Recommending changes to existing Java infrastructure.
- Developing multimedia applications.
- Developing documentation to assist users.
- Ensuring continuous professional self-development.
Java Developer Requirements:
- Degree in Computer Science or related field.
- Experience with user interface design, database structures, and statistical analyses.
- Analytical mindset and good problem-solving skills.
- Excellent written and verbal communication.
- Good organizational skills.
- Ability to work as part of a team.
- Attention to detail.
We are looking for a Developer who is proficient with Node and has at least 1-3 years of relevant experience. Your primary role will be on developing microservices, while ensuring good coding practices and architecture. You will have end to end ownership of the services you develop, to ensure it is robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, and quality product is important.
Roles and Responsibilities
- Integrating and maintaining Node micro services
- Proficient in RESTful APIs and API communications, especially to consume data from and/or push data into MongoDB for Web and mobile applications
- Proficient on modeling applications on NOSQL databases(preferably MongoDB)
Desired Candidate Profile
- Strong coding experience in Node JS.
- Should have experience with microservice architecture
- Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement
Nice to have:
- Some experience with queues like like Redis,SQS,etc
- Experience with cloud solutions like Lambda, Docker etc
- Experience in DevOps and related practices to improve development lifecycle, continuous delivery with high quality is an advantage.
- Deploy server/related components to staging, live environments.
- Some exposure to React Frontend implementation, deeper JS skills
Roles and Responsibilities:
- We are looking for software developers with hands-on experience in react, firebase, and UML for a Japanese company in New Delhi.
- You should be a passionate web developer, who will work as part of a core team to build best-in-class frameworks and web / mobile applications for Japanese clients.
- You will work under a native Japanese supervisor and contribute to designing and developing mobile and web applications.
- This is a great chance for learning and upgrading yourself in an international environment. You will help in developing software and application for our customers from various industries such as IT, manufacturers, finance, services, etc. Develop by using Java, C#, JavaScript,React.js, PHP, Python, Flutter, React Native, etc.
- Experience with frontend JavaScript, in conjunction with Typescript or Flow, and modern frameworks like React, React Native, Redux, and other JS libraries is an advantage.
- Experience as a full-stack engineer is an advantage.
- Self-directed, driven, and sharp.
- You'll be surrounded by teammates with deep experience in strategy, data, code, and design, hence a great chance to learn and upgrade your skills
- Experience with project management tools and Git is an advantage.
- Strong proficiency in HTML, CSS & JavaScript.
- Hand-on experience with react, firebase, UML.
- Should be a Japanese speaker JLPT N3, JLPT N2
As a Search lead, you will get hands-on experience in latest technologies like Elastic Stack, Spring, Kafka, Mongo, Redis, API Design etc. and also will be responsible for leading a team of engineers. The Search team is an essential part of the Technology team at Meesho and works on solving technical challenges related to ensuring fast searchability of data with increasing scale.
Understanding Elasticsearch internals. Managing & improving elasticsearch clusters performance.
Build & lead a great team by example.
Develop a deep understanding of the startup ecosystem.
Build a customer-facing technology product for global customers.
Learn & Develop Leadership skills.
We work on an array of technologies, including but not limited to Spring, Node, Elastic Stack, MySQL, Mongo, ReactJS, Webpack, Kafka, Redis, AWS Lambda, Ansible, etc








