Sr Java Developer (+Python) at Wissen Technology · Bengaluru (Bangalore) · 5 - 8 years · ₹5L - ₹25L / yr · Profitable · Posted 6 Jul 2026

JOB DESCRIPTION-
Exp - 5 to 8yrs
Job Summary
We are looking for a highly skilled and motivated Senior Software Engineer with strong expertise in Java (primary) and working knowledge of Python. The ideal candidate will be responsible for designing, developing, and maintaining scalable backend systems, while contributing to high-quality software delivery across the full development lifecycle.
Key Responsibilities
- Design, develop, and maintain robust, scalable, and high-performance applications using Java (Spring Boot / Microservices architecture)
- Develop reusable components and APIs with a focus on performance, security, and scalability
- Leverage Python for automation, scripting, data processing, or ML-related use cases (as applicable)
- Collaborate with cross-functional teams including Product, QA, DevOps, and Architecture
- Participate in system design discussions and contribute to technical decision-making
- Write clean, efficient, and well-documented code following coding standards and best practices
- Optimize applications for maximum speed and scalability
- Troubleshoot and debug complex production issues
- Contribute to CI/CD pipelines and DevOps practices
- Mentor junior engineers and perform code reviews
Required Skills & Qualifications
Technical Skills
- Strong hands-on experience in Core Java, Spring Boot, and Microservices architecture
- Solid understanding of RESTful APIs, multithreading, concurrency, and JVM performance tuning
- Practical experience with Python (automation, scripting, or backend development)
- Experience with databases: SQL (MySQL, PostgreSQL) and/or NoSQL (MongoDB, Cassandra)
- Familiarity with cloud platforms (AWS, Azure, or GCP)
- Strong knowledge of data structures, algorithms, and system design
- Experience with message brokers (Kafka, RabbitMQ)
- Exposure to containerization & orchestration (Docker, Kubernetes)
- Experience with version control systems (Git)
Preferred Skills
- Experience in distributed systems and event-driven architectures
- Knowledge of Python frameworks (Flask, FastAPI, Django)
- Exposure to big data technologies (Spark, Hadoop) or ML workflows
- Experience with CI/CD tools (Jenkins, GitHub Actions, etc.)
- Familiarity with observability tools (Prometheus, Grafana, ELK stack)
Soft Skills
- Strong problem-solving and analytical skills
- Excellent communication and collaboration abilities
- Ability to work in a fast-paced agile environment
- Proactive ownership and accountability

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 (10)
Job Title: Tech Architect - Java Spring Boot
Company Name: Chella Software Private Limited
Company Website
Company details
THE PARTNER OF CHOICE FOR FINANCIAL MARKETS
Our deep domain experience, ultra-high-performance software solutions, and on-time project delivery make us the preferred partner for the financial markets.
Over the last two decades, Chella Software has built deep domain experience in the financial markets and a capability for developing ultra-high-performance software that can handle very high volumes of data with the lowest levels of latency.
We are now preferred partners for a host of Central Banks, Stock Exchanges, Clearing Corporations, Brokerages, and Institutional Investors across 12 countries.
We are a global provider of fintech solutions for central banks, exchanges, central counter parties, and financial market intermediaries. We meet the software needs of customers in India, the Middle East, Africa, Singapore, and the USA.
Central Banks:
- Our portfolio of solutions for central banks includes:
- Chella Switch, a national payment and settlement system designed for central banks in frontier markets, and
- Chella Horizen, a robust, reliable and full coverage investment management and accounting platform for reserve management.
Exchanges and CCPs:
We are at the forefront of providing customized solutions for exchanges, CCPs, depositories, and other financial market infrastructure. Our high-speed, low-latency, high-volume, massively scalable systems are spread across the core areas of trading, surveillance, risk management, clearing, settlement, and compliance.
Our teams have deep expertise in:
- Developing and implementing bespoke solutions on a build-operate-maintain model.
- Re-architecting and re-engineering core applications to address performance and scalability challenges.
- Migrating legacy systems to the latest technologies without disrupting operations.
- Defining and building digital experiences and journeys that facilitatethe addition of new investors to the market.
Brokerages:
Our solutions for brokerages include:
- Chella Trader, a multi-asset, multi-exchange, multi-currency, omni-channel order management system, and
- Chella Clearvision is a modular broker back office that helps scale a broker’s business with incremental investments.
Institutional Investors:
We meet the investment management needs of institutional investors through Chella IMS, a full coverage post-trade investment management and IFRS-compliant accounting platform for pension funds, insurance firms, and family offices.
Location: Madurai - Tamil Nadu
Mode of Working: Work Form Office (Interview shall be face to face at Madurai)
Days of Working: 5 Days a week
Responsibilities
Job Description:
- Tech Architect with expertise in Java Spring Boot to design and implement robust, scalable, and high-performance backend systems. As a Tech Architect, you will be responsible for shaping the technical direction of complex software projects and providing architectural guidance to engineering teams.
- This role requires deep technical knowledge, leadership skills, and the ability to collaborate with various stakeholders to ensure the successful delivery of solutions that meet business and technical requirements. Experience in the Fintech domain is an added advantage.
Key Responsibilities:
- Architectural Design & Strategy:
- Lead the architectural design and implementation of scalable, maintainable, and secure backend systems using Java, Spring Boot, and microservices architecture.
- Define best practices for code quality, testing, security, and deployment processes. Drive the adoption of modern development methodologies (Agile, DevOps) and frameworks.
- Technical Leadership:
- Provide mentorship and technical guidance to developers and engineers on coding standards, design patterns, and technologies.
- Ensure the architecture is aligned with business goals and technical constraints. Conduct code reviews and enforce best practices to maintain high-quality standards.
- Collaboration:
- Work closely with Product Managers, Business Analysts, and other stakeholders to gather requirements and translate them into technical solutions.
- Collaborate with cross-functional teams to define system requirements, integrate with third-party services, and ensure the overall system design is cohesive.
- Problem Solving:
- Analyze and resolve complex technical challenges, such as performance bottlenecks, scalability issues, and system integrations.
- Evaluate and implement new technologies, tools, and frameworks to continually improve the development process.
- Documentation & Reporting:
- Document architectural designs, technical specifications, and implementation guides.
- Provide regular updates on project progress, risks, and technical challenges to senior leadership.
- Continuous Improvement:
- Stay up to date with emerging technologies, industry trends, and best practices.
- Recommend improvements to system architecture, processes, and technologies to enhance the software development lifecycle.
Interview process: Virtual and Face-to-Face
Skills:
Experience: 9-12 Years
Location: Madurai
Job Type: Full-time
Education: B.E(Any stream)/ B.Tech / M.E / M.Tech. or similar
Skills: Java, Spring Boot, and microservices architecture.
Why Join Us?
- Opportunity to work on cutting-edge solutions for capital markets.
- This is a global role and, hence, will provide opportunities to work with organizations across the globe.
- Learn from experienced professionals and grow into a solution architect, product manager or sales role.
- Opportunity for rapid personal and professional growth.
ATGS official Email
anita at atgs.co.in
Mandatory skills
Hands on Python Programming.5+ years of Data Engineering experience: Skills sets: Python, SQL (Snowflake), S3.
Good to have
AWS familiarity would help
Knowledge of REST API, XML and RESTFUL web services
Working knowledge on SQL, JQuery, web services, Eclipse IDE would be a plus
JioTesseract, a digital arm of Reliance Industries, is India's leading and largest AR/VR organization with the mission to democratize mixed reality for India and the world. We make products at the cross of hardware, software, content and services with focus on making India the leader in spatial computing. We specialize in creating solutions in AR, VR and AI, with some of our notable products such as JioGlass, JioDive, 360 Streaming, Metaverse, AR/VR headsets for consumers and enterprise space.
Mon-Fri, In office role with excellent perks and benefits!
Key Responsibilities:
1. Design, develop, and maintain backend services and APIs using Node.js or Python, or Java.
2. Build and implement scalable and robust microservices and integrate API gateways.
3. Develop and optimize NoSQL database structures and queries (e.g., MongoDB, DynamoDB).
4. Implement real-time data pipelines using Kafka.
5. Collaborate with front-end developers to ensure seamless integration of backend services.
6. Write clean, reusable, and efficient code following best practices, including design patterns.
7. Troubleshoot, debug, and enhance existing systems for improved performance.
Mandatory Skills:
1. Proficiency in at least one backend technology: Node.js or Python, or Java.
2. Strong experience in:
i. Microservices architecture,
ii. API gateways,
iii. NoSQL databases (e.g., MongoDB, DynamoDB),
iv. Kafka
v. Data structures (e.g., arrays, linked lists, trees).
3. Frameworks:
i. If Java : Spring framework for backend development.
ii. If Python: FastAPI/Django frameworks for AI applications.
iii. If Node: Express.js for Node.js development.
Good to Have Skills:
1. Experience with Kubernetes for container orchestration.
2. Familiarity with in-memory databases like Redis or Memcached.
3. Frontend skills: Basic knowledge of HTML, CSS, JavaScript, or frameworks like React.js.
Position : Senior Java Backend Developer
Job Location: Navi Mumbai / Bangalore / Hyderabad / Pune
Job Description :
At least 5 years of professional experience in developing backend applications using Java
- Proficiency in using Spring Boot, Hibernate, RESTful APIs, microservices and other modern web technologies
- Experience in working with relational and non-relational databases such as MySQL, MongoDB, Redis etc.
- Exp on Azure Cloud.
- Experience in using DevOps tools such as Docker, Jenkins etc.
- Knowledge of GraphQL and how to use it with Java
- Knowledge of best practices and principles of software engineering such as SOLID, design patterns, code quality, testing etc.
- Familiarity with agile methodologies such as Scrum or Kanban
- Ability to work independently and as part of a team
- Excellent communication and problem-solving skills
We are looking for Advance Java developers who want to help us design cutting edge scalable products to meet our rapidly growing business. We are building out a team and looking for multiple levels but you should have at least 6+ years of programming experience.
Key Responsibilities
- Build high availability and extreme reliable high volume transactional systems.
- Deliver reliable solutions that handle massive data and high traffic.
- Complete ownership of problem-free execution of owned modules and solutions.
- Focus on code optimization, code quality, maintainability etc.
Skills required
- Hands-on experience in Core J2EE or Core Java (collection, multithreading).
- Proficiency in Spring, Hibernate, Kafka, JDBC.
- Excellent data structure & algorithm and problem solving skills.
- Strong working knowledge of Databases – MySQL/NoSQL, OS - Windows/Linux.
- Experience and knowledge of open source tools & frameworks, broader cutting edge technologies around server side development.
- Should be an active contributor to developer communities like Stackoverflow, Topcoder, Github, Google Developer Groups (GDGs).
- Customer-focused, react well to changes, work with teams and able to multi-task.
Java Developer Job Description
We are looking for a Java developer responsible for building Java applications.
Responsibilities
- Design, build and maintain efficient, reusable, and reliable Java code
- Identify bottlenecks and bugs, and devise solutions to these problems
- Help maintain code quality, organization, and automatization.
Skill Set:
- Proficient in Java, with a good knowledge of its ecosystems
- Java, Rest API integration, JSON, XML, Oracle, Microservices, Agile Scrum.
- Experience in developing large-scale distributed systems.
- API knowledge
- Solid understanding of object-oriented programming
- Familiar with various design and architectural patterns
- Skill for writing reusable Java libraries
- Spring, Spring Boot, Spring Cloud, React native
- Experience: 04 to 10 years
- Salary: As Per Market
- 9+ years of experience is required
- Experience in .Net application development & Architecture.
- Experience in .net core and microservices
- Experience in Azure is good to have
- Contributed towards elicitation of requirements, translate the business requirements to solution options including the technical blocks and infrastructure required in at least 2 development projects
- Should have worked and have good hands-on experience in bespoke application development in the following technologies :
- Experience with front end UI technologies like HTML5, CSS3, jQuery, TypeScript and one of Angular or ReactJS framework
- Experience with web service standards (Web API, MVC, SignalR, WCF, REST, XML, JSON and SOAP).
- Good understanding and implemetntation of software design patterns such as MVC, repository, dependency injection, inversion of control, singleton unit of work and others.
- Database Design an implementation knowledge on SQL queries, functions, packages, triggers and replication
- Should have deep understanding and experience in Microsoft technologies. Responsible for detailed technical design at a solution level.
- Automation experience on Code Review, Unit Testing and Integration testing is an added advantage.
- Should assist with technical effort estimating, creation of work breakdown structure, risks and solutions at a solution level.
- Should review design and implementation of junior designers and developers on the quality of technical deliverables and adherence to quality process
- Should have the following technological experience
- Able to build management using any version control tools such as Github, TFS or SVN.
- Experience in both Waterfall and Agile/Scrum Methodology is required.









