
What kind of work will you get?
We are looking for a java developer.
Examples of technical tasks:
Working on our backend SDK to implement APIs that will be consumed by the frontend widgets
Designing APIs for different auth recipes
Architecting auth flows
You will also be given non technical tasks like product brain storming, competitor analysis and writing documentation.
Note: Compensation is as per the applicant's geography
Requirements
Well versed in java with 2+ years of professional experience
Familiar with and comfortable working with Web frameworks like FastAPI, Django and Flask
Familiar with HTTP networking in java
Strong understanding of async and sync modes in java
Bonus:
Contributed to open source, or have your own open source repo with a community and many github stars
Built an in-house authentication or authorization solution or worked with solutions such as Keycloak, Auth0, Ory, Okta etc
If you like our project, please star us on https://github.com/supertokens/supertokens-core">Github
Note: Compensation is as per the applicant's geography
Recruitment Process
Initial Filtering
Apply
Technical Interview (1/2) - 1.5 hours
Discussion on your past work, this will involve sharing your work (code and output) via screen share
Architecture discussion and general programming related live code problems.
You will be allowed to use Google throughout the interview and you will be required to have screen share on.
This call will be with the CTO
Technical Interview (2/2) - 1.5 hour
This will involve a discussion to assess the breadth and depth of your technical knowledge and general questions on various technical topics.
You will not be asked to write any code
This call will be with the CTO
Chat with the Co-Founder - 1 hour
This call will involve a general discussion to assess culture fit

Similar jobs
- Develop, enhance, and maintain Java-based applications using Spring Boot and related frameworks.
- Design, implement, and optimize Microservices with RESTful APIs.
- Build and manage Spring Batch jobs, including scheduling, chunk processing, partitioning, and error handling.
- Apply object-oriented design (OOD) and GoF design patterns (Factory, Singleton, Strategy, Observer, etc.).
- Write clean, maintainable, and scalable code following best coding standards.
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- Participate in code reviews, technical discussions, and architectural decisions.
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Technical Skills Required
- ** Core Java 8+**, OOP, Collections, Multithreading
- ** Spring Boot**, Spring MVC, Spring Data JPA
- ** Spring Batch** (Job/Step configuration, Tasklets, Readers/Writers, partitioning)
- ** Microservices** (REST, API Gateway, service discovery, resilience patterns)
- ** Design Patterns** (Factory, Singleton, Adapter, Strategy, Builder, Observer, etc.)
- ** Databases:** MySQL/PostgreSQL/Oracle, MongoDB (optional)
- ** Messaging:** Kafka / RabbitMQ (preferred)
- ** Build tools:** Maven/Gradle
- ** CI/CD:** Jenkins, GitLab CI, or similar
- ** Cloud:** AWS / Azure / GCP (optional but preferred)
- ** Testing:** JUnit, Mockito
Greetings from Wissen Technology!
We are hiring Java Developers for Mumbai location.
Exp - 4 - 8 years
Location - Mumbai (Goregaon) - Hybrid
Notice Period - immediate or serving notice period only
Interview Process - Initial rounds virtual + Final round F2F
Software Engineer/Senior Software Engineer/Lead Engineer-Java
· Experience in Core Java 5.0 and above, Data Structures, OOPS, Multithreading, Algorithms, Collections, Unix/Linux
· Possess good architectural knowledge and be aware of enterprise application design patterns.
· Should have the ability to analyse, design, develop and test complex, low-latency client-facing applications.
· Good development experience with RDBMS
· Good knowledge of multi-threading and high volume server side development
Basic working knowledge of Unix/Linux
· Excellent problem solving and coding skills in Java
· Strong interpersonal, communication and analytical skills.
· Should have the ability to express their design ideas and thoughts.
Job Brief-
· Understand product requirements and come up with solution approaches
· Build and enhance large scale domain centric applications
· Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines
Job Summary:
We are seeking a skilled and experienced Java Developer with hands-on expertise in AWS, Spring Boot, and Microservices architecture. As a core member of our backend development team, you will design and build scalable cloud-native applications that support high-performance systems and business logic.
Key Responsibilities:
- Design, develop, and maintain backend services using Java (Spring Boot).
- Build and deploy microservices-based architectures hosted on AWS.
- Collaborate with DevOps and architecture teams to ensure scalable and secure cloud solutions.
- Write clean, efficient, and well-documented code.
- Optimize application performance and troubleshoot production issues.
- Participate in code reviews, technical discussions, and architecture planning.
Must-Have Skills:
- 4.5+ years of experience in Java development.
- Strong proficiency in Spring Boot and RESTful APIs.
- Proven hands-on experience with AWS services (EC2, S3, Lambda, RDS, etc.).
- Solid understanding of microservices architecture, CI/CD, and containerization tools.
- Experience with version control (Git), and deployment tools.
Work Location: Bangalore
Job Type: Full-time
Experience Level: 5-10 years
Job Description:
We are looking for a talented Java Developer with a strong background in multithreading, microservices , Spring Boot, data structures and algorithms, and SQL, specifically within the banking sector. The ideal candidate will be responsible for designing and implementing high-performance applications that cater to our financial services.
Key Responsibilities:
- Develop and maintain robust, scalable Java applications using Spring Boot.
- Implement multithreading concepts to enhance application performance and responsiveness.
- Design and optimize data structures and algorithms for efficient data processing.
- Collaborate with business analysts and stakeholders to understand requirements and translate them into technical solutions.
- Write complex SQL queries and optimize database interactions to ensure high performance.
- Conduct code reviews and contribute to team best practices and standards.
- Troubleshoot and resolve issues in a timely manner, ensuring minimal impact on business operations.
- Stay updated with the latest trends in Java development and banking technology.
Required Qualifications:
- Bachelor’s degree in computer science, Information Technology, or a related field.
- Proven experience as a Java Developer, added advantage in the banking or financial services domain.
- Strong proficiency in Java, with a deep understanding of multithreading concepts.
- Hands-on experience with the Spring Boot framework and Microservices
- Solid understanding of data structures and algorithms and their application in solving complex problems.
- Proficient in SQL and experience with relational database management systems (e.g., Oracle, MySQL).
- Strong analytical and problem-solving skills, with the ability to work under pressure.
- Excellent communication skills and the ability to work
If interested, Kindly drop cv in linkedIn: linkedin.com/in/ranjini-c-n-36b674131

- Degree in Computer Science (BS/MS), related technical field or equivalent practical experience
- 8+ years of industry experience in product development
- Experience in coaching and mentoring team members
- Must own a specific component of the product. Gathering requirements by working with product management. Working closely with development managers in defining external product interfaces
- Must have excellent written and verbal communication skills. Must articulate various design approaches and design decisions clearly - within the team and across the teams.
- Must work with QA engineers to devise proper test constructs - unit testing and integration tests.
• Opportunity to develop game-changing, globally distributed, internet advertising products used by millions worldwide.
• Contribute hands-on, own, collaborate, and deliver new features and services at a fast pace.
• Build platforms, frameworks, APIs, libraries & automated tools to facilitate rapid issue
resolution and development & deployment of new features and changes.
• Own the prioritization, scoping and scheduling processes for new products and features.
• Work with and advise management on technical aspects, make well-informed decisions.
• Improve processes, technology & the applications you own continuously by showing the team better ways of doing things and help improve skills in the team.
• Prioritize tech-debt and ensure the platforms and applications meet the latest industry
standards.
• Learn new technology & practices, coach the team and conduct training sessions – devote time for learning and continuous improvement of self and team.
• Imbibe and maintain a strong customer service-oriented attitude while designing and building products.
Who should apply for this role ?
• 5 - 9 years of experience in building or managing large scale distributed systems
• BS/MS degree in Computer Science or other relevant majors
• A track record of working on scalable applications, preferably at a major internet property or well-known startup
• Good grasp on programming fundamentals including OOP, Design Principles and Data Structures
• Excellent analytical, logical, and problem-solving skills
• Solid knowledge of Java/Python/Golang, web services (REST/JSON), NoSql Databases,
Kafka/Kinesis/Spark, Elasticsearch/Solr/Kibana
• Can exhibit passion and enthusiasm for remarkable technology (Knowledge and contribution to open source projects, Active Blog, etc. is a plus)
• Ability to learn emerging technical/business standards and apply/coach development team in proper adoption
• Deep understanding of development processes and has personally contributed to critical
product cycles
• Communicate effectively & cross-functionally with other teams
➢ Design and develop core server side components for our consumer facing site
as well as for fulfillment and inventory logistics
➢ Prototype new ideas
Experience / Skills Required:
➢ B.Tech or advanced degree in Computer Science with 8-12 years of progressive industry
experience
➢ Strong experience with Python development and Django framework or NodeJS required
➢ Strong experience with JavaScript , HTML, CSS, AJAX and JSON
➢ Strong experience with building reusable server components
➢ Strong experience with WebServices, XML, REST interfaces
➢ Strong experience with object oriented programming
➢ Strong experience with backend performance optimization and algorithms
➢ Strong experience with SQL, RDBMS, data modeling and MySQL, Oracle or other RDBMS
➢ Strong leadership / technology mentoring skills a must. Ability to do code and design reviews is a
key part of this role.
➢ Experience with Microservices / Distributed event based architectures desired.
➢ Deep experience with Linux based development and deployment architectures.
➢ Experience with database query tuning.
➢ Experience with cloud platforms such as AWS is a great plus
➢ Experience with frameworks such as Angular / React JS is a great plus
➢ Awareness of and experience with reactive programming is a plus
➢ Experience with Ecommerce/Consumer facing applications serving a large volume of users is a
great plus.
➢ Exposure to technologies like Kafka, Redis, Spark, Kinesis, Solr, ElasticSearch etc is a plus.
➢ Experience with NoSQL or BigData is a great plus
➢ Hands on Full Stack experience desired.
➢ Must be adept at experimenting with new technologies
➢ Must have excellent communication (verbal & written), interpersonal, leadership, and problem
solving skills
➢ Must be able to work independently and enjoy working at a fast paced start-up environmen
• Experience with Core Java, J2EE, Spring, Hibernate, HTML/HTML5, JavaScript, Jquery, Web
Services.
• Understand and use Messaging Based Services techniques.
• Working knowledge with MySQL or similar SQL Databases.
• Strong knowledge in Object Oriented Concepts with Core Java.
• Good understanding and practical experience with Enterprise Java Concepts and
Methodologies.
• Good understanding of software development process in an agile environment.
• Excellent problem solving and troubleshooting skills.
• Solid coding practices including documentation, code reviews and unit testing.
• Knowledge of Grails, ReactJS, MongoDB and Junit will be an added advantage.
• Proficiency with database management is a plus.
• Experience with AWS infrastructure, e.g. S3, EC2, database services (RDS).
• Contribute to Production Support and debugging across the platform while working with other
software engineers.
• Strong experience with Application server development - Service layer patterns using Spring.
Specialized Skills:
• Excellent verbal and written communication in English.
• Ability to work in a fast-paced environment.
• Ability to multi-task on a regular basis.
• Ability to accept direction and complete work according to instruction.
• Strong analytical skills while maintaining attention to details.
• Innovative problem-solving techniques.
• Ability to organize, prioritize work, meet deadlines and work independently.
• Ability to handle multiple projects and activities in a timely manner.
• High Emotional Intelligence for an office environment.
• Experience working with office productivity tools; delivery assurance and/or industry standards
on deliverables.
• Experience working with administrative and/or workflow systems.
• Technical leadership of an engineering team to build, deploy, and support a reliable,
performant and scalable RESTful platform.
Professional Experience:
5-8 years’ experience
Qualification:
BE(CSE) B.Tech, M.Tech, M.Sc, B.Sc (IT), ME, M.Sc(CS), MCA
Perks:
• Monday to Friday – 5 Days work schedule
• Health insurance benefits
• Accidental and disability insurance benefits
• Opportunity to grow and promote from within
• Staff development activities
Do not apply if:
• Not having Experience in java, My SQL
• Not fluent in speaking, reading, writing English as this position requires fluent English languagebased communication
o Minimum 8 years of overall experience in software development.
o Experience as a Lead developer .
o Experience with AWS,Architecture, Node js.










