You will get API and payment gateway integration
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Top Rated
Project details
You will get secure API integrations and payment gateway implementation for your web application, SaaS platform, or backend system using Java Spring Boot. I can integrate third-party APIs, payment gateways, webhook systems, authentication workflows, and external services while ensuring secure communication and scalable backend architecture.
With 7+ years of experience in backend development and enterprise integrations, I focus on building reliable API workflows, secure payment processing systems, optimized backend communication, and maintainable integration architecture. I work with REST APIs, webhooks, Stripe, PayPal, Razorpay, and custom API systems for scalable business applications.
With 7+ years of experience in backend development and enterprise integrations, I focus on building reliable API workflows, secure payment processing systems, optimized backend communication, and maintainable integration architecture. I work with REST APIs, webhooks, Stripe, PayPal, Razorpay, and custom API systems for scalable business applications.
Programming Languages
JavaScript, Java, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included $80
These options are included with the project scope.
$80
- Delivery Time 4 days
- Number of Revisions 2
- Design Customization
- Content Upload
- Responsive Design
- Source Code
14 reviews
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PS
Philippe S.
Jan 30, 2025
Integration testing
Niravdas is very skilled and highly reliable. I shall work with him again when the next opportunity arises.
RA
Reza A.
Oct 26, 2024
Java Backend- and Webdeveloper with Spring and Javascript Expertise
ST
Sachin T.
Oct 26, 2024
Kotlin Web Development (Spring BFF)
Yes, performed well, and had other team members to support him (though I found that out later)
This area was relatively new to him, but he had already hand-on experience with Java, and Spring (Boot, Session, and Security).
Overall, I would recommend him, if you have a short, medium or long term project
This area was relatively new to him, but he had already hand-on experience with Java, and Spring (Boot, Session, and Security).
Overall, I would recommend him, if you have a short, medium or long term project
ST
Shekar T.
Jun 26, 2024
Need to upgrade an API using spring frame to create consumer groups on Kafka
Niravdas has a very good knowledge on the springframe work. He understood the requirements very quickly and was able to deliver on time. He also quickly reacts and take complete ownership of the issues. Would highly recommend him
AK
Ankur K.
Jun 19, 2024
Java Rest API
Niravdas is a professional and an expert and helped me with my work deliverables.
About Niravdas
Senior Java Engineer | Spring Boot | Microservices | SaaS | AWS
100%
Job Success
Ahmedabad, India - 10:20 pm local time
I specialize in designing and developing high-performance backend systems with clean architecture, secure APIs, scalable microservices, and production-ready infrastructure. I have worked with startups, SaaS companies, fintech platforms, AdTech systems, privacy compliance platforms, and enterprise organizations to build applications that are scalable, secure, maintainable, and optimized for long-term growth.
My expertise includes backend architecture, microservices development, API design, database optimization, cloud deployments, Docker containerization, Kubernetes orchestration, Linux server administration, performance tuning, security implementation, system integration, web application development, legacy application maintenance, bug fixing, troubleshooting, and enterprise application modernization.
𝗠𝘆 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:
✔ Java Development
✔ Spring Boot & Spring MVC
✔ Microservices Architecture
✔ Multi-Tenant SaaS Platforms
✔ REST API Development
✔ GraphQL APIs
✔ Kafka & Event-Driven Systems
✔ PostgreSQL & MySQL
✔ Hibernate & JPA
✔ AWS Cloud Services
✔ Distributed Systems
✔ Secure Authentication & RBAC
✔ Backend Performance Optimization
✔ API Integrations
✔ Enterprise Application Development
✔ CI/CD Pipelines
✔ Jenkins, Maven & Gradle
✔ Database Design & Query Optimization
✔ Production Support & Maintenance
✔ Scalable System Architecture
✔ Web Application Development
✔ Legacy Application Maintenance
✔ Bug Fixing & Troubleshooting
✔ Linux Server Troubleshooting
✔ Web Application Troubleshooting
✔ Docker Containerization
✔ Kubernetes Orchestration
✔ Apache Tomcat Administration
✔ JUnit & Mockito Testing
𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 & 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 𝗜 𝗛𝗮𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗢𝗻:
• SaaS Platforms
• AdTech & Programmatic Advertising
• Digital Asset Management
• Privacy & Compliance Systems
• Fintech Applications
• Enterprise Workflow Platforms
• Business Process Automation
• Reporting & Analytics Systems
• Multi-Tenant Platforms
• White-Label Solutions
• CRM & Business Applications
• Enterprise Admin Portals
𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 & 𝗧𝗼𝗼𝗹𝘀:
• Java
• Spring Boot
• Spring MVC
• Hibernate
• JPA
• JDBC
• GraphQL
• REST APIs
• PostgreSQL
• MySQL
• Kafka
• AWS
• Jenkins
• Maven
• Gradle
• Git & GitHub
• Docker
• Tomcat
• Flyway
• Snowflake
• Kubernetes
• Linux
• Apache Tomcat
• JUnit
• Mockito
Some of the notable platforms I have worked on include Adstrome (AI-powered DSP & SSP advertising platform), TrustArc (enterprise privacy compliance platform), Acquia DAM (digital asset management platform), and Digi-Docket (fintech workflow platform).
Throughout my career, I have worked on:
• Building and scaling microservices architectures
• Designing secure enterprise APIs
• Multi-tenant SaaS implementations
• High-volume reporting and analytics systems
• Event-driven backend architectures
• Enterprise security and RBAC systems
• Database performance optimization
• Legacy system modernization
• Cloud-based application deployments
• Production issue resolution and performance tuning
• Legacy application maintenance and modernization
• Web application development and support
• Docker containerization and deployment
• Kubernetes-based container orchestration
• Linux server troubleshooting and maintenance
• Web application troubleshooting and debugging
I also have hands-on experience solving complex backend challenges including:
• Microservice migrations
• Performance bottlenecks
• Database optimization
• Scalability issues
• Distributed system design
• API security implementation
• Infrastructure modernization
• Production debugging
• System monitoring and reliability improvements
• Legacy application maintenance
• Bug fixing and root cause analysis
• Linux server troubleshooting
• Web application troubleshooting
• Containerized application deployments
Along with development, I have experience leading backend initiatives, mentoring developers, conducting code reviews, collaborating with cross-functional teams, and delivering enterprise software using Agile methodologies.
Why clients work with me:
✔ Clean, scalable, and maintainable code
✔ Strong system design and architecture skills
✔ Enterprise SaaS and backend expertise
✔ Reliable communication and ownership
✔ Performance and scalability mindset
✔ Secure and production-ready implementations
Whether you need to build a backend platform from scratch, architect a SaaS product, implement microservices, optimize performance, modernize an existing system, or scale your application for growth.
Let’s build a scalable, secure, and high-performing backend platform for your business.
Steps for completing your project
After purchasing the project, send requirements so Niravdas can start the project.
Delivery time starts when Niravdas receives requirements from you.
Niravdas works on your project following the steps below.
Revisions may occur after the delivery date.
API and Payment Gateway Integration
Integrate APIs and payment gateways securely with optimized backend workflows and reliable communication handling.