Lead Java Fullstack Engineer at Wissen Technology · Mumbai · 5 - 15 years · Profitable · Posted 5 Aug 2026

Lead Java Platform Engineer
Build the high-performance platform services behind our core financial applications.
EXPERIENCE
5+ years (core Java)
CORE TECH
Java · REST APIs ·
SQL/NoSQL
DOMAIN
Financial Services
About the role
We’re seeking a highly experienced and passionate Senior Java Platform Engineer to join our
team. You’ll play a crucial role in designing, developing, and maintaining the robust, scalable
platform services that underpin our core financial applications.
This role demands a deep understanding of core Java principles, a proven track record of
building high-performance APIs, and extensive experience in the financial services industry.
What you’ll do
Design & development
– Design, develop, and maintain high-performance, scalable, and reliable platform services in
Java.
– Build and consume RESTful APIs and other web services.
– Write clean, well-documented, testable code, and contribute to code reviews and quality.
Platform engineering
– Contribute to the architecture and design of our platform services.
– Optimize platform performance and scalability and troubleshoot complex technical issues.
– Ensure the security and reliability of the platform.
Data management
– Work across SQL and NoSQL databases.
– Design efficient data access patterns and apply sound data modelling principles.
Financial services expertise
– Apply deep knowledge of financial industry practices, regulations, data, and systems.
– Work with sensitive financial data structures, with the care that requires.
Automation & workflow– Use Python for scripting and automation tasks.
– Apply (or build) exposure to Apache Airflow or similar tools for data pipelines and
scheduling.
Collaboration & communication
– Collaborate with cross-functional teams — product managers, QA engineers, and
developers.
– Communicate clearly with both technical and non-technical stakeholders.
– Mentor junior engineers.
What you’ll bring
– Bachelor’s or Master’s in Computer Science or a related field.
– 8+ years of experience in core Java development.
– Extensive experience building and maintaining platform services.
– Strong grasp of object-oriented programming principles and design patterns.
– Proven experience designing and developing RESTful APIs.
– Deep knowledge of concurrency, multithreading, and performance optimization.
– Hands-on experience with SQL and NoSQL databases.
– Significant experience within the financial services industry.
– Exposure to Python for scripting and automation.
– Exposure to Apache Airflow or similar workflow management tools.
– Excellent problem-solving, analytical, communication, and collaboration skills.
– Experience with Agile development methodologies.
Nice to have
– Cloud platforms (AWS, Azure, or GCP).
– Containerization and orchestration (Docker, Kubernetes).
– Message queues (Kafka, RabbitMQ).
– Knowledge of financial regulations and compliance requirements.
About Wissen Technology
Wissen Technology is a specialized consulting firm that helps organizations in Banking &
Finance, Telecom, and Healthcare build world-class products. Since 2015, we’ve grown to
1,000+ engineers across the US, UK, India, Australia, Mexico, and Canada and we are a
certified Great Place to Work ®.

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
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Location: Bangalore
Company: Wissen Technology
Experience: 8+ Years
About the Role
Wissen Technology is looking for a highly experienced Senior Java Architect to join our engineering team. In this role, you will design, develop, and maintain scalable, high-performance platform services that power mission-critical financial applications.
The ideal candidate will have deep expertise in Core Java, platform engineering, REST API development, and extensive experience working within the Financial Services domain.
Key Responsibilities
Platform Design & Development
- Design, develop, and maintain scalable, high-performance, and reliable platform services using Core Java.
- Build, integrate, and support RESTful APIs and web services.
- Write clean, maintainable, well-documented, and testable code.
- Participate in code reviews and promote engineering best practices.
- Contribute to architectural decisions and platform design initiatives.
Performance & Platform Engineering
- Optimize application performance, scalability, and reliability.
- Troubleshoot and resolve complex technical issues.
- Ensure platform security, availability, and operational excellence.
- Implement best practices for concurrency, multithreading, memory management, and performance tuning.
Data Management
- Work with both SQL and NoSQL databases.
- Design efficient data access and persistence strategies.
- Apply strong data modeling principles and database optimization techniques.
Financial Services Domain
- Develop solutions aligned with financial industry standards and regulatory requirements.
- Leverage a strong understanding of financial systems, products, and workflows.
- Ensure secure handling of sensitive financial data while maintaining compliance.
Automation & Workflow Management
- Utilize Python for scripting, automation, and operational tasks.
- Work with Apache Airflow (or similar workflow orchestration tools) to schedule and manage data pipelines.
Collaboration & Leadership
- Collaborate with Product Managers, Architects, QA Engineers, and cross-functional development teams.
- Communicate effectively with both technical and business stakeholders.
- Mentor junior engineers and contribute to the team's technical growth.
- Participate in Agile ceremonies and drive continuous improvement initiatives.
Required Qualifications
- Bachelor's or Master's degree in Computer Science, Engineering, or a related field.
- 10+ years of hands-on experience in Core Java development.
- Strong experience building and maintaining enterprise-scale platform services.
- Expertise in Object-Oriented Programming (OOP), design patterns, and software engineering principles.
- Proven experience designing and developing RESTful APIs.
- Deep understanding of concurrency, multithreading, memory management, and performance optimization.
- Hands-on experience with SQL and NoSQL databases.
- Significant experience within the Financial Services industry.
- Exposure to Python scripting and automation.
- Experience with Apache Airflow or similar workflow management tools.
- Strong analytical, problem-solving, and troubleshooting skills.
- Excellent communication and stakeholder management abilities.
- Experience working in Agile/Scrum environments.
Preferred Qualifications
- Experience with cloud platforms such as AWS, Azure, or GCP.
- Hands-on experience with Docker and Kubernetes.
- Experience with messaging technologies such as Kafka or RabbitMQ.
- Understanding of financial regulations, governance, and compliance requirements.
Why Join Wissen Technology?
- Work on mission-critical platforms for leading financial institutions.
- Gain exposure to modern engineering practices and cloud-native technologies.
- Be part of a collaborative, innovation-driven engineering culture.
- Enjoy a hybrid work model based in Bangalore or Mumbai.
- Accelerate your career with opportunities for continuous learning and growth.
About StrideOne
StrideOne is a leading fintech platform enabling businesses with innovative supply chain finance and working capital solutions. We partner with enterprises, MSMEs, and financial institutions to simplify access to credit through technology-driven lending solutions. At StrideOne, you'll work in a fast-paced, collaborative environment where innovation, ownership, and continuous learning are encouraged.
About the Role
We're building Credit Engine, a lending platform on top of Apache Fineract that powers credit assessment, disbursement, repayment, and portfolio management for our clients. We're looking for a Java Developer to help build and scale the backend services behind these workflows.
What You'll Work On
- Build and maintain backend services for lending functions — organisation/office management, portfolio and product configuration, cash margin engines, and credit workflows.
- Design and consume REST APIs integrating with internal modules and external banking/financial partners.
- Extend Apache Fineract to support custom lending products and business rules.
- Design and optimize MySQL schemas/queries for transactional, audit-heavy financial data.
- Translate lending/credit policies (interest computation, grace periods, margin calculations) into tested, production-grade code.
- Debug production issues in systems handling real money movement, with focus on correctness and data integrity.
- Participate in code reviews and API/service design discussions.
Must-Have Skills
- 2+ years hands-on Core Java (Java 8+) — OOP, collections, concurrency basics.
- Experience building REST APIs with Spring Boot.
- Strong MySQL skills — schema design, indexing, query optimization, transactions.
- Understanding of transactional consistency, data integrity, and audit trails.
- Comfortable with Git-based collaborative workflows.
Good to Have
- Experience with Apache Fineract or similar core banking/lending platforms.
- Exposure to microservices, message queues, or event-driven systems.
- Familiarity with cloud platforms (AWS/GCP/Azure) and CI/CD.
- Frontend exposure (Angular/React) for API contract collaboration.
- Prior experience in fintech, NBFC, banking, or supply chain finance
Position Title : Software Engineer
Position Type: Full-Time
Department: Research & Development
Reports To: First Level Manager,
Company Background:
Affiliated with US Group companies, CGLIA Solutions LLP is an innovative Software Product Development organization developing highly available, highly secure, cloud-based enterprise software products catering to the needs of leading Research Facilities, University Medical Centers, Hospitals, and Pharmaceutical companies across the globe, ultimately contributing to the development of life-saving medications.
CGLIA is committed to helping software professionals unleash their creativity, build world-class enterprise applications, and accelerate their careers in a collaborative and innovation-driven environment.
Job Summary :
As a Software Engineer (Java), you will be responsible for designing, developing, and maintaining scalable, secure, and high-performance cloud-based enterprise applications. You will work closely with Product Management, Business Analysts, QA, DevOps, and cross-functional engineering teams to deliver innovative software solutions that exceed customer expectations.
The ideal candidate should be a self-starter with excellent analytical and problem-solving skills, strong expertise in Java backend technologies, and a passion for developing high-quality software. This role also provides an opportunity to mentor junior engineers, participate in technical discussions, and contribute to architectural decisions.
Key Responsibilities
- Participate in requirement analysis and collaborate with Product Management to understand functional and non-functional requirements.
- Contribute to technical design discussions and prepare technical design documentation.
- Design, develop, test, and maintain scalable backend applications using Java and Spring Boot.
- Develop and maintain RESTful APIs and Microservices.
- Write clean, reusable, maintainable, and well-documented code following industry best practices.
- Optimize application performance, scalability, reliability, and security.
- Perform unit testing, code reviews, debugging, and production issue resolution.
- Collaborate with QA, DevOps, UI, and Product teams throughout the software development lifecycle.
- Mentor junior engineers and actively contribute to knowledge sharing within the team.
- Stay updated with emerging technologies, frameworks, and software development best practices.
- Participate in technical interviews and hiring activities to support organizational growth.
- Undertake additional responsibilities as required to achieve project and organizational objectives.
Qualifications (Education, Experience, Skills & Knowledge)
- Bachelor's degree in Computer Science, Information Technology, or an equivalent discipline.
- 5+ years of hands-on experience in Java application development.
- Strong expertise in Core Java (Java 8/11/17) and Object-Oriented Programming concepts.
- Extensive experience with Spring Boot, Spring MVC, Spring Data JPA, Spring Security, and Hibernate.
- Strong experience designing and developing RESTful APIs and Microservices.
- Experience working with relational databases such as MySQL, PostgreSQL, Oracle, or MS SQL Server.
- Good understanding of Data Structures, Algorithms, Design Patterns, and Multithreading.
- Angular, Bootstrap, Material Design, HTML5, CSS, JavaScript
- Hands-on experience with Git, Maven/Gradle, and Agile/Scrum development methodologies.
- Experience with code quality tools such as SonarQube and static code analysis.
- Exposure to Docker, Kubernetes, CI/CD pipelines, and cloud platforms (AWS, Azure, or GCP) is preferred.
- Knowledge of messaging systems such as Kafka or RabbitMQ is an added advantage.
- Strong analytical, troubleshooting, and debugging skills.
- Excellent written, verbal, and interpersonal communication skills.
- Ability to work independently and collaboratively in a fast-paced product development environment.
- Eagerness to learn and adopt new technologies.
Key Technical Requirements
- Strong hands-on experience in Java
- Strong Java coding/programming skills
- Strong experience with Hibernate
- Strong experience in REST APIs
Mandatory Domain Experience
Candidates must have experience in the Financial Services, Banking, or Payments domain.
Screening Guidelines
- Look for candidates based in Pune only, as the 2nd/final round will be mandatory F2F.
- Prioritize Immediate Joiners or candidates currently serving their notice period.
- Candidates should demonstrate strong hands-on Java coding along with solid Hibernate and REST API experience.
- Immediate Joiners: We can plan their interview rounds during this week itself, if required.
Job Title: Software Engineer / Senior Software Engineer – Java Backend
Experience: 5–10 Years
Location: Pune (Baner) – Work from Office (5 Days a Week)
About the Role :
We are looking for passionate Java Backend Engineers to build highly scalable, high-performance enterprise applications used by millions of users globally. The ideal candidate should have strong experience in Java, Microservices, Payment Gateway integrations, and Checkout platform development, with a product engineering mindset.
Candidates from FinTech, E-commerce, Payments, or Product-based companies will be preferred.
Key Responsibilities :
Design, develop, and maintain scalable backend applications using Java and Microservices.
Build secure, high-performance REST APIs and distributed services.
Develop and enhance Checkout platforms and Payment Gateway integrations for seamless payment processing.
Collaborate with Product, Architecture, QA, and DevOps teams throughout the SDLC.
Participate in system design, architecture discussions, and technical decision-making.
Ensure high code quality through unit testing, code reviews, and engineering best practices.
Build and support CI/CD pipelines and containerized deployments.
Troubleshoot production issues, optimize performance, and improve application reliability.
Mentor junior engineers and contribute to engineering excellence.
Required Skills :
5–10 years of backend development experience.
Strong expertise in Java, Spring Boot, Spring MVC, Hibernate/JPA.
Hands-on experience with Microservices Architecture.
Experience building RESTful APIs.
Strong knowledge of SQL/NoSQL databases.
Experience with Payment Gateway Integration (Stripe, Adyen, Razorpay, Worldpay, PayU, Checkout.com, etc.).
Hands-on experience developing Checkout and Payment Processing workflows.
Understanding of Payment Lifecycle, including Authorization, Capture, Refunds, Settlement, Webhooks, and Transaction Management.
Experience with Docker, Kubernetes, and containerized applications.
Good understanding of CI/CD pipelines using Jenkins or similar tools.
Familiarity with Git, Agile methodologies, and engineering best practices.
Strong problem-solving and debugging skills.
Preferred Skills :
Experience working in FinTech, Payments, E-commerce, or Product-based organizations.
Exposure to Cloud Platforms (GCP/AWS/Azure).
Experience with Kafka or event-driven architecture.
Knowledge of OAuth2, JWT, Keycloak, or similar authentication mechanisms.
Experience with Monitoring & Observability tools (Grafana, Prometheus, ELK, Splunk).
Performance tuning and scalability optimization experience.
Preferred Background :
Candidates from FinTech, Digital Payments, Banking Products, E-commerce, or Product Engineering companies.
Experience working on high-volume transaction systems handling secure payment processing and checkout experiences.
Job Summary:
We are seeking highly skilled Java Developers with hands-on experience in developing
enterprise-scale applications, preferably within the financial services domain. The role
requires expertise in Core Java, Microservices, and high-performance server-side
development.
Key Responsibilities:
• Design, develop, and maintain enterprise-scale n-tier applications in the financial
domain.
• Develop complex, low-latency, client-facing applications with a focus on performance
and scalability.
• Work with Microservices architecture, Data Structures, OOPs, Algorithms, and
Multithreading.
• Perform high-level and low-level design for critical applications.
• Collaborate with cross-functional teams to define, design, and deliver new features.
• Ensure best practices in coding, architecture, and application performance.
Requirements:
• Strong experience in Core Java 5.0 and above, Spring, and CXF.
• Extensive experience in enterprise application design patterns and architecture.
• Strong development experience with RDBMS (preferably Sybase).
Experience: 7+ years
Location: Mumbai
Mode of Work: Hybrid
• Hands-on expertise in multithreading and high-volume server-side applications.
• 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.
• Ability to express design ideas and collaborate effectively with teams
We are looking for a Backend Software Development Engineer with 6+ years building scalable, high-availability server-side systems. You'll design and own microservices and REST APIs, model data in SQL, and deploy on AWS, partnering with product and frontend teams end-to-end.
Mandatory skills
• 6+ years of backend development in Java and/or Python
• Strong hands-on experience designing microservices and RESTful APIs
• Solid database design and SQL optimization
• Production experience on AWS (or equivalent cloud)
• Strong CS fundamentals — data structures, concurrency, system design
• Experience owning services from design through production support
Experience
9–18 Years
Education
IIT / NIT graduates only
Interview Process
Candidates must be available for a Face-to-Face interview in Bangalore or Mumbai.
Key Responsibilities
- Design and develop scalable, high-performance Java applications.
- Lead a team of engineers and drive technical excellence.
- Architect enterprise-grade solutions and provide technical guidance.
- Collaborate with cross-functional teams to define, design, and deliver high-quality software.
- Review code, mentor team members, and ensure engineering best practices.
- Drive system design discussions and resolve complex technical challenges.
Required Skills
- Strong expertise in Core Java and Java ecosystem.
- Excellent problem-solving and analytical skills.
- Very strong coding ability with clean coding practices.
- Strong understanding of System Design and distributed systems.
- Hands-on experience in Java Architecture and designing scalable applications.
- Experience leading engineering teams and mentoring developers.
- Good understanding of software design principles, design patterns, and performance optimization.
- Strong communication and stakeholder management skills.
Preferred Skills
- Experience with Spring Boot, Microservices, REST APIs, and cloud technologies.
- Exposure to CI/CD, containerization, and modern DevOps practices is an advantage.
Looking for strong experience in Java, Spring Boot, Spring Cloud, Microservices, System Design, Kafka, Redis, Cloud, Docker & Kubernetes.
FinTech / Banking experience will be an added advantage.
Senior Software Engineer – Backend
Company: House of EdTech (Goenka Kachave LLP)
Location: Bangalore, Hybrid
Job Type: Full-Time
Experience: 5+ Years
About the Role
House of EdTech is looking for a Senior Software Engineer – Backend to design, develop, and scale high-performance backend services and APIs supporting products used by millions of learners.
You’ll work closely with Product, Frontend, Data, and Engineering teams while taking end-to-end ownership of backend features and contributing to system architecture and technical decisions.
What You'll Do
- Design and develop scalable backend services and REST APIs.
- Build reliable systems capable of handling high traffic and large data volumes.
- Own backend features from design and development through deployment and monitoring.
- Work with microservices, databases, and distributed systems.
- Identify and solve performance, scalability, reliability, and security challenges.
- Participate in system design and architecture discussions.
- Conduct code reviews and contribute to engineering best practices.
- Mentor junior and mid-level engineers.
- Monitor production systems and troubleshoot incidents.
What We're Looking For
- 5+ years of professional backend development experience.
- Strong hands-on experience with Java, Python, Scala, C++, or a similar language.
- Experience building and operating large-scale distributed systems.
- Strong understanding of REST APIs, microservices, and databases.
- Experience with cloud/infrastructure technologies such as GCP, Docker, or Kubernetes.
- Strong software engineering fundamentals, including security, reliability, testing, and code quality.
- Experience with system design, architecture, and technical decision-making.
- Strong communication and cross-functional collaboration skills.
- Experience mentoring engineers is a plus.
Why Join House of EdTech?
- Work on products impacting millions of learners.
- Solve challenging backend and scalability problems.
- Take significant ownership of architecture and engineering decisions.
- Opportunity to grow into technical leadership and architectural ownership.
- Work in a fast-growing technology environment.






