Java Developer

Job Title: Lead Java Developer

Experience Required: 7+ Years

Location: Mumbai

About the Role

We are seeking a highly skilled Senior Backend Developer with deep expertise in building scalable, high-performance applications. The ideal candidate will have strong hands-on experience with Java, Spring Boot, Microservices, and distributed systems. You will play a key role in designing and optimizing APIs, architecting robust systems, and collaborating with cross-functional teams to deliver innovative solutions.

Key Responsibilities

• Design, develop, and maintain scalable backend systems using Java, Spring Boot, and Microservices architecture.
• Build and optimize APIs for large-scale applications ensuring high performance and reliability.
• Apply clean coding principles, SOLID design patterns, and clean architecture to deliver maintainable and robust code.
• Work with distributed systems technologies (Kafka, ELK, in-memory databases, Cassandra, or similar).
• Write efficient SQL queries and integrate with relational and NoSQL databases.
• Collaborate with product managers, architects, and other developers to define and align on technical decisions.
• Identify and solve complex problems with innovative and scalable solutions.
• Drive best practices in coding standards, system design, and performance optimization.
• Communicate complex technical concepts clearly across teams and stakeholders.

Skills & Qualifications

• 7+ years of experience as a Backend Developer.
• Strong expertise in Java, Spring Boot, Microservices, SQL.
• Significant experience in API design and optimization for enterprise-scale applications.
• Proficiency in distributed systems & related technologies (Kafka, ELK, in-memory DBs, Cassandra, etc.).
• Strong understanding of object-oriented engineering principles (SOLID, clean architecture).
• Excellent problem-solving and analytical skills with the ability to simplify complex concepts.
• Strong communication and collaboration skills, with the ability to influence and align teams.

Your Impact:

•                 Implements Digital Consumer experiences based on a foundation of SFCC (Salesforce commerce cloud) to meet expected quality standards

•                 Ensures functional requirements and high-level solution designs are understood and are translated into detailed technical design

•                 Implement proofs of concept to prove any new technologies, application flows or integration scenarios and identify customizations needed to SFCC platform for meeting client requirements

•                 Guides the performance tuning and scalability of the ecommerce solution

•                 Diagnose and solve technical problems during implementation and support phases

Your Skills & Experience:

•                 1-3 Years with 2+ years of implementing commerce application on any eCommerce platform in last 3 years

•                 If you have not worked in eCommerce platform, we can still discuss with you if you are expert in Java/.Net and understand REST/SOAP webservices.

•                 Demonstrate proficiency in build and release management using CI/CD strategies (leveraging tools like Jenkins and DevOps practices), implement Mocha/Chai unit and functional test cases in order to reduce costs while ensuring quality

•                 Contributes to designing, implementing and documenting the build release process as well as system configuration and deployment characteristics of the applications

•                 Participates in technical walkthroughs/ code reviews of other team members’ components, test plans and results and help them with gaps

•                 Collaborate with architect to define implementation processes and quality gates and standards

•                 Identifies risks and issues, and help monitor them

•                 Guides the development of reference and resource materials

•                 Mentors developers in improving their platform knowledge and development skills

•                 Communicate technical design to the developers and help/guide them in the implementation

•                 Participates in Agile sprints

Set Yourself Apart With:

•                 eCommerce platform certification

• - Strong architecture and design skills and keen business sense.
• - Strong core server-side technologies experience (Java), database design & performance tuning exposure.
• - Strong OO design skills, knowledge of frameworks such as Spring/ Spring Boot/ exposure to functional programming a plus.
• - Good knowledge of nodeJS/ noSQL a definite plus.
• - Good exposure to front end/UI skills (JS, HTML, Angular).
• - Good exposure to configuration management, testing, deployment.
• - Deep knowhow of data structures, algorithms.
• - Hands on development across technologies

We are seeking a skilled Java Developer with 5+ years of experience in Java, Camunda, Apache Camel, Kafka, and Apache Karaf. The ideal candidate should have expertise in workflow automation, message-driven architectures, and enterprise integration patterns. Strong problem-solving skills and hands-on experience in microservices and event-driven systems are required.

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

• Bachelor/Master's in computer science or relevant fields
• 10+ years of Relevant Experience
• Strong sense of ownership
• Excellent Java and object-oriented development skills
• Experience in building and scaling microservices
• Strong Knowledge in RDBMS & NoSQL databases
• Strong problem-solving skills, technical troubleshooting and diagnosing
• Expected to be a role model for young engineers, have a strong sense of code quality, and enforce code quality within the team
• Excellent understanding of Debugging performance and optimization techniques
• Experience in Java, Mongo, MySQL, AWS technologies, ELK stack, Spring boot, Kafka
• Experience in developing any large scale Experience in cloud technologies
• Demonstrated ability to deliver in a fast-paced environment