Senior Java Developer

Job Title : Senior API Developer (Spring Boot Microservices + Apigee/APIM)

Experience : 6+ Years

Employment Type : Contract

Role Level : Senior

Project : Leading South Africa Telecommunications Operator

Department : Application & Experience Engineering

Job Overview :

We are seeking a Senior API Developer with strong expertise in Spring Boot Microservices and API Gateway technologies (Apigee/Azure API Management) to design, develop, and manage secure, scalable APIs for enterprise applications and partner integrations.

The ideal candidate will build high-performance APIs exposing business insights, analytics, and AI/ML services while ensuring security, scalability, and reliability.

Mandatory Skills :

Java, Spring Boot, Microservices, REST APIs, Apigee or Azure API Management (APIM), OAuth2, OpenID Connect (OIDC), JWT, Docker, Kubernetes (AKS), API Security, API Gateway, Microservices Architecture, Kafka (Preferred).

Key Responsibilities :

• Design, develop, and maintain secure RESTful APIs using Spring Boot Microservices.
• Build scalable microservices following best practices for resilience, performance, and maintainability.
• Configure and manage APIs using Apigee or Azure API Management (APIM), including authentication, rate limiting, traffic management, and analytics.
• Implement API security using OAuth2, OpenID Connect (OIDC), API Keys, and Mutual TLS.
• Collaborate with Full Stack, AI/ML, Solution Architecture, and Cybersecurity teams to deliver enterprise-grade integrations.
• Support external partner integrations and internal enterprise systems through well-designed API contracts.
• Optimize API performance, monitor usage, troubleshoot issues, and maintain API lifecycle, versioning, and documentation.

Required Skills :

• 6+ years of experience in Backend/API Development.
• Strong hands-on experience with Java, Spring Boot, and Microservices Architecture.
• Expertise in Apigee or Azure API Management (APIM).
• Strong understanding of REST APIs, API versioning, and API lifecycle management.
• Experience implementing OAuth2, OpenID Connect (OIDC), JWT, API Security, and Authentication.
• Experience with Docker, Kubernetes (AKS), and Cloud-native deployments.
• Familiarity with Kafka or other event-driven messaging platforms is a plus.
• Excellent understanding of enterprise integration patterns and scalable API design.

Good to Have :

• Experience with Azure Cloud.
• Telecom, Banking, FinTech, or other regulated industry experience.
• Certifications in Apigee, Microsoft Azure, or Microservices Architecture.

Java/Python Developer(60% Java - 40% Python) - Mid Level Hands On Strong Developer

- 3 Years to 5 Years - Level 2

- 5 Years to 7 Years - Level 3

Location - Mumbai Commerz3 Office Only

He/She candidate must possess a strong technology background with advanced knowledge of Java

and Python based technology stack.

Java, J2EE, Spring MVC, Python, JPA, Spring Boot, REST API, Database, Playwright, CI/CD pipelines

. At least 3 years of Hand-on Java EE and Core Java experience with strong leadership qualities.

. Experience with Web Service development, REST and Services Oriented Architecture.

. Expertise in Object Oriented Design, Design patterns, Architecture and Application Integration.

· Working knowledge of Databases including Design, SQL proficiency.

. Strong experience with frameworks used for development and automated testing like SpringBoot, Junit, BDD etc.

. Experience with Unix/Linux Operating System and Basic Linux Commands.

. Strong development skills with ability to understand technical design and translate the same into workable solution.

. Basic knowledge of Python and Hand-on experience on Python scripting

. Build, deploy, and monitor applications using CI/CD pipelines.

Job Description

We are seeking a talented and experienced Java SpringBoot Microservices Developer

to join our dynamic development team. As a Java SpringBoot Microservices Developer,

you will be responsible for designing, developing, and maintaining scalable and

high-performance microservices-based applications using Java and SpringBoot

frameworks.

Responsibilities:

● Collaborate with cross-functional teams to gather and analyze requirements for

the development of microservices applications.

● Design, develop, and implement robust and scalable microservices using Java

and SpringBoot.

● Build RESTful APIs and integrate them with external systems as required.

● Ensure the performance, security, and reliability of the microservices through

thorough testing and debugging.

● Participate in code reviews to ensure code quality, maintainability, and adherence

to coding standards.

● Troubleshoot and resolve technical issues related to microservices and their

integration with other components

● Continuously research and evaluate emerging technologies and industry trends

related to microservices and recommend improvements to enhance application

development.

Requirements:

● Bachelor's degree in Computer Science, Software Engineering, or a related field.

● Strong experience in Java development, specifically with SpringBoot framework.

● Proficiency in designing and developing microservices architectures and

implementing them using industry best practices.

● Solid understanding of RESTful API design principles and experience in building

and consuming APIs.

● Knowledge of cloud platforms and experience with containerization technologies

(e.g., Docker, Kubernetes) is highly desirable.

● Familiarity with agile development methodologies and tools (e.g., Scrum, JIRA) is

a plus.

● Excellent problem-solving and analytical skills with a keen attention to detail.

● Effective communication and collaboration skills to work effectively within a team

environment.

If you are a passionate Java developer with a strong focus on building scalable

microservices applications using SpringBoot, we would love to hear from you. Join our

team and contribute to the development of cutting-edge solutions that deliver

exceptional user experiences.

To apply, please submit your resume and a cover letter outlining your relevant

experience and achievements in Java SpringBoot microservices development.

Responsibilities:

Lead the design and development of sophisticated, high availability, and secured

server-side applications with a primary focus on Golang.

● Collaborate with cross-functional teams to understand requirements, architect

solutions, and deliver high-quality software products.

● Mentor and guide junior engineers, sharing your engineering expertise and best

practices to foster skill development within the team.

● Analyze and optimize performance, scalability, and reliability of existing Golang

applications, making strategic improvements where necessary.

● Design and implement automated unit and integration tests to ensure code quality,

maintainability, and stability.

● Stay up-to-date with the latest advancements in software technologies,

recommending their adoption when appropriate.

● Champion code reviews, architectural discussions, and technical documentation to

maintain high development standards.

● Troubleshoot and resolve complex issues, providing innovative solutions to overcome

challenges.

● Contribute to the recruitment and hiring process by participating in interviews,

evaluating candidates, and providing input on hiring decisions.

Requirements

Bachelor's or Master's degree in Computer Science, or a related field.

● 3+ years of experience in software development, with substantial experience in

Golang and cloud infrastructure.

● Expert-level proficiency in designing and developing high-performance, concurrent

applications with Golang.

● Experience with distributed systems, microservices architecture, and containerization

(e.g., Docker, Kubernetes).

● Solid knowledge of software testing methodologies and tools, including unit testing

and integration testing for Golang applications.

● Demonstrated ability to lead projects, collaborate effectively with teams, and mentor

junior engineers.

● Excellent problem-solving and analytical skills, with the ability to tackle complex

technical challenges.

● Having prior experience in the FinTech domain would be an added advantage.

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

Client: MNC (WFO)

Role: DOT NET DEVELOPER

Exp: 4 years to 6 years

CTC : UPTO 30 lpa.

NOTE:Serving notice period (30days/immediate joiner.

Candidates from Bangalore location only apply.

• Hands-on working knowledge and experience is required in:

• Extensive experience working on C#, .net and .net core frameworks
• Relational Databases (SQL Server, Oracle, PostgreSQL, etc.)
• NoSQL Databases (Mongo, Cloud Spanner, etc.)
• Agile Methodologies (Scrum, TDD, BDD, etc.)
• Experience working with distributed teams across regions and time zones
• Strong organizational skills
• Display detailed, critical, quality-oriented, skeptical thinking about the product

• Experience with several of the following tools/technologies is desirable:

• GIT, Jira, Jenkins, SharePoint, Visual Studio Code.
• Microservices Architecture, Domain Driver Design, Test Driven Development is a bonus
• Design Patterns and implementing the Design Patterns
• Development of Complex Application and System Architectures
• Data Structures and Algorithms using Typescript, C# and .NET
• Experience working in Google Cloud will be a big bonus as all our systems are in the Cloud
• Knowledge of REST and gRPC API’s is a bonus

• Knowledge of the following technologies is a plus:

• Continuous Integration and Continuous Delivery Tools like GitHub, Git, etc.
• Containerization Technologies (Docker)

About Client : Our client is an American company that develops, manufactures and sells solar micro-inverters, energy generation monitoring software and battery energy storage products

The Back-End engineer will develop, maintain, architect & expand cloud microservices. Codebase uses Java, Spring Boot, Mongo, REST APIs, MySQL. Applications are dockerized and hosted in AWS using plethora of AWS services.

Key Responsibilities and Outcomes

• Programming in Java + Spring Boot
• REST API with JSON, XML etc. for data transfer
• Multiple database proficiency including SQL and NoSQL (Cassandra, MongoDB)
• Ability to develop both internal facing and external facing APIs using JWT and OAuth2.0
• Familiar with HA/DR, scalability, performance, code optimizations
• Experience with working with highly performance and throughput systems
• Ability to define, track and deliver items to ones own schedule
• Good organizational skills and the ability to work on more than one project at a time
• Exceptional attention to detail and good communication skills

Minimum Qualifications

• B.E/B.Tech in Computer Science from top tier college and >70% marks
• 70% or 7 CGPA throughout in education.
• Top 100 Engineering colleges only (NIRF ranking)
• Stability in job.
• Experience with SQL + NoSQL (Preferably MongoDB)
• Experience with Amazon Web Services, JIRA, Confluence, GIT, Bitbucket
• Ability to work independently and as part of a project team
• Strong organizational skills, proactive, and accountable.
• Excellent critical thinking and analytical problem-solving skills
• Ability to establish priorities and proceed with objectives without supervision
• Ability to communicate effectively and accurately
• Clear concise written project status update throughout the project lifecycle
• Highly skilled at facilitating and documenting requirements

Responsibilities & ownership

• Lead, build, deliver and ensure customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product.
• Work on distributed systems for data processing with efficient protocols and communication, locking and consensus, schedulers, resource management, low latency access to distributed storage, auto scaling, and self healing.
• Understand and reason about concurrency and parallelization to deliver scalability and performance in a multithreaded and distributed environment.
• Lead the team to solve complex and unknown problems 
• Solve technical problems and customer issues with technical expertise
• Design and deliver architectures that run optimally on public clouds like  GCP, AWS, and Azure
• Mentor other team members for high quality and design 
• Collaborate with Product Management to deliver on customer requirements and innovation
• Collaborate with Support and field teams to ensure that customers are successful with Dremio

Requirements

• B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
• Fluency in Java/C++ with 3alm+ years of experience developing production-level software
• Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models, and their use in developing distributed and scalable systems
• 5+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
• Hands-on experience  in query processing or optimization, distributed systems, concurrency control, data replication, code generation, networking, and storage systems
• Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
• Passion for learning and delivering using latest technologies
• Ability to solve ambiguous, unexplored, and cross-team problems effectively
• Hands on experience of working projects on AWS, Azure, and Google Cloud Platform 
• Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure, and Google Cloud) 
• Understanding of distributed file systems such as  S3, ADLS, or HDFS
• Excellent communication skills and affinity for collaboration and teamwork
• Ability to work individually and collaboratively with other team members
• Ability to scope and plan solution for  big problems and mentors others on the same
• Interested and motivated to be part of a fast-moving startup with a fun and accomplished team

Java_FullstackDeveloper_DGT II

Tech Stack:

Golang, Microservices (AWS ECS, App Mesh), Ruby, Rails, MySQL, Postgres, Redis, NATS.

Required Skills:

- 5+ years of experience with Ruby on Rails OR 2+ years of experience with Golang.

- 5+ years of experience with MySQL or Postgres and relational data modelling.

- Experience consuming and writing REST APIs.

- Focus on writing clear, maintainable, tested code.

- Experience with Git, continuous integration and regular deployments.

- Experience with complex Rails projects and design principles.

- Strong willingness to learn and use Golang at work.

- Experience with CI (continuous integration).

- Strong understanding of Linux.

- Strong understanding of Docker.

- You must be a strong communicator who can explain complex ideas to anyone regardless of background.

Preferred Skills:

- 2+ years of experience with Golang.

- Experience with Microservices deployed in Kubernetes.

- Experience with AWS ECS, App Mesh and Lambda.

- Ability and interest in mentoring junior engineers a plus.

- Excellent written communication skills and diligent ability to contribute to the team by performing code reviews.

- B.S. in Computer Science, Computer Engineering, Software Engineering, or equivalent experience