Java+Spring Boot 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.

1.Plan and perform data migration into the new systems from the existing legacy ERP.

2.Should have working knowledge coding in C# with latest syntax of .Net.

• Should have sound knowledge around OOPS and aware of its applications - classes, interfaces, inheritence and composition
• Should have sound knowledge in SQL Queries.

3.Working knowledge in Dynamics 365 customizations and configurations including workflows, plugins, custom workflow activities, javascript, sitemap/ribbon customizations,

4.Should have written C#/Javascript code to consume D365 APIs or any other APIs externally. Knowledge in SSIS/KWS, SCRIBE is an advantage.

• Should have experience in writing D365 Fetch-based reports.
• Sound functional knowledge in atleast 1or2 of Sales, Service and Marketing modules.
• Strong HTML5 an CSS skills is a must.
• JQuery

5.Experience developing and deploying business applications using Microsoft's Dynamics Power Platform.

6.Core Skills: D365, CRM SDK, XRM Toolbox, Model Driven Power Apps and Power Automate

7.Train new users on the functionality of the CRM Platform

8.Conduct refresher courses on the usage of the platform

9.Maintain log of all changes done on the Platform.

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About us:
Equal parts creative agency, engineering firm, and consultancy, Grappus has a reputation of doing things differently. We work with brands big and small, far and wide, helping them understand, prototype and deploy a broad range of custom tech. We value design and we cringe at bad UX. Each project is a clean slate, we don’t have frameworks, or any pre-made formulas. We’re not here to just grow big, make money and win awards. We’re here to crack the process of building truly innovative products from scratch. Products that make people say ‘damn’.

People at Grappus usually experience a highly accelerated career growth well beyond the narrow constraints of their ‘job description’. Here, the growth ladder is tailored to you. It operates exactly as fast as you can manage to grow. We think it's a waste when smart people are unable to make an impact. Our aim is to unleash your potential by giving you massive challenges and the freedom to solve them.

We’re in a fluid world, where we don’t know what technologies we’ll use next, or the projects we’ll work on. We’re actively searching for ways to shine a light on our blind spots, whether it is in the products we want to build, the problems we like to solve, or the company culture we try to create. That’s what makes life at Grappus so exciting. Grappus is an ongoing experiment and you are a part of it. We'll be a different company a few years from now because you are going to change it for the better. We can’t wait to see where you take us.

About the role:
We are seeking a Senior Backend Developer who has a knack for coming up with creative solutions to unique problems, planning development cycles and writing technical documentation while leading a team of developers. You should have experience with different design pattern implementation and be quick in making architectural decisions. You can get in where needed to write clean, reusable, and performant code, with creative sensibilities to push projects towards perfection. You should have good time management skills and be able to work both autonomously and collaboratively with a cross-discipline team of product managers, strategists, UX designers, art directors, and developers.

What we’d like to see:
● Ability to write elegant and readable code
● Excellent problem solving skills and love technical challenges
● Comfortable working in a team-oriented and collaborative environment
● Strong understanding of Agile and Lean software development processes and practices
● Stays plugged into emerging technologies/industry trends and applies them proactively
● Taking leads on projects as needed
● Knowledge of software best practices, like test driven development and continuous integration
● Directing the development team in the design, development, coding, testing and debugging of applications

Must have:
● BE/ BTech in Computer Science or a related field or equivalent practical experience
● 4+ years of professional backend development experience
● Experience coaching and mentoring junior developers
● Aggressive problem diagnosis and creative problem solving skills and client handling      skills
● Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques
● Experience working with Python/Django or NodeJS
● Knowledge of DRF, Redis, Celery, RabbitMQ, Jenkins, MongoDB and PostgreSQL
● Implemented CI/CD in any of the projects done
● Strong understanding of the full web technology stack (i.e. HTTP, caching, headers, cookies, etc)
● Proficiency in working with API’s and third party integrations
● Demonstrated ability to learn new technologies
● Experience with multi-tenant architectures (SaaS)
● Experience with Test Driven Development
● Excellent project and time management skills

Nice to have:
● Familiarity and experience using a variety of architectural Design Patterns
● Knowledge of Kubernetes/Docker and Devops
● Personal projects or contributions to the open source community
● Strong organizational skills to juggle multiple tasks within the constraints of timelines
● Team player (those great personality types that people love to work with)
● Great communication skills

Why you’ll love it here:
(Besides working with our team with infinite charm)

● We have no fixed work timings or leave policy, you can take unlimited leaves and start your day whenever you want. (Just make sure others in your team don’t suffer)
● We don’t track these hours you put in or ask you to fill time sheets. We don’t believe in
micromanaging, if you’re struggling, ask for help. If someone else is, offer some support.
● We never mind if people make mistakes or screw up in any way, and offer full encouragement to help people learn fast by failing fast.
● We always encourage people to be completely candid, raise alarms, or log complaints
anonymously in our feedback tool, no matter how harsh.
● We are a ‘Work from Anywhere’ company, since passionate, driven people can work from
anywhere they want; their homes, or cafes, or mountains, or beaches, anywhere.
● We have a 15-day notice period. We want to build a place where people work willingly and passionately.

Java Backend

Experience : 5+ years (Immediate Joiner)

Location: Hyderabad(Remote)

• Core Java, SpringBoot, MicroServices
• DB2 or any RDBMS database application development
• Linux OS, shell scripting, Batch Processing
• Troubleshooting Large Scale application
• Experience in automation and unit test framework is a must
• AWS Cloud experience desirable
• Agile Development Experience
• Complete Development Cycle ( Dev, QA, UAT, Staging)
• Good Oral and Written Communication Skills

Java Elastic Search

• Java Microservices ELK stack(Elasticsearch, Logstash, Kibana, Beats, X-Pack, APM),
• Build Custom Reports

Java + NodeJS

• Java with Node.js- Microservices Development,
• Using graphql with node.js,
• Backend development with Node.JS

Java Microservices

• Working experience in Java and spring boot (microservices)
• Strong understanding of OOPs concepts
• Proficient in API design and development using RESTful services
• Knowledge and understanding of design principles behind building a scalable application
• Source code management using git