Spring Boot Expert for FinTech Backend Development

@rohitpatidar001

Hello, I am a Senior Java Backend Developer with 11+ years of experience designing and building enterprise-grade applications using Java, Spring Boot, REST APIs, Microservices, Oracle Database, and distributed backend systems. My experience includes: • Spring Boot, Spring MVC, Spring Data, Spring Security • REST and SOAP service development and integration • Oracle Database design, optimization, indexing, and performance tuning • Enterprise integrations with third-party platforms and external services • High-volume transaction processing systems • CI/CD pipelines, Git, Maven, Docker, and Agile delivery • Microservices architecture and scalable backend design I have worked on financial and enterprise platforms involving API integrations, transaction workflows, batch processing, data synchronization, and secure backend services where reliability, scalability, and performance were critical requirements. I am comfortable contributing across architecture, development, integration, performance optimization, troubleshooting, code reviews, and mentoring activities. I would be interested in learning more about the payment ecosystem, integration requirements, existing architecture, and technology landscape to determine how I can best contribute to the project. Looking forward to discussing the opportunity. Best regards, Rohit Patidar Senior Java Backend Developer

@rizwange4

With over a decade of experience in designing and developing robust backend services and FinTech solutions, I strongly believe I am the Senior Backend Java Developer you need. My in-depth knowledge of Java and Spring Boot, combined with a profound understanding of microservices architecture and ISO 8583 financial messaging protocol, sets me apart from other candidates. I have an impressive track record of building REST and SOAP APIs and successfully integrating them with digital wallets, EMIs, payment switches, and various mobile operators - providing unique expertise requisite for your project. My collaborative approach to work also ensures seamless integration with cross-functional teams for the timely delivery of resilient and secure software solutions - a must for your project. Having successfully conducted code reviews and provided technical mentorship to junior developers previously, I further assure you of my capability as a tech leader. Let's get started with this project to make real productivity strides!

@pashyaa

Hi, I am interested in this Senior Backend Java/Spring Boot role. I have 12+ years of Java backend development experience with strong hands-on work in Spring Boot, Spring MVC, Spring Data JPA, Hibernate, Spring Security, REST APIs, SOAP integrations, Oracle/MySQL/PostgreSQL, complex SQL queries, indexing, performance tuning, Git, CI/CD, code reviews, Agile SDLC, and production troubleshooting. I have worked on enterprise backend systems involving API integrations, secure workflows, database optimization, audit/compliance flows, and production-safe releases. I also have experience with Oracle databases and Java EE/Spring-based enterprise applications. I can work with existing payment protocol specifications and integration patterns. I am available to start immediately. Please get in touch to discuss the project further. Thanks & Regards, Prasanna

@rbtech1984

Hello There!!! ★★★★ (Senior Spring Boot FinTech Backend Developer for secure payment & high-volume transaction systems) ★★★★ Project understanding: I understand you need a senior Java Spring Boot developer to build and maintain secure FinTech backend services, including payment systems, wallet integrations, APIs (REST/SOAP/ISO 8583), Oracle DB optimization, and scalable microservices with strong focus on security and performance. Services: ⚜ Spring Boot backend development (REST, SOAP, microservices) ⚜ FinTech systems (wallets, payments, transaction engines) ⚜ ISO 8583 & financial messaging integration ⚜ Oracle database design, tuning & optimization ⚜ Spring Security, Hibernate, Spring Data implementation ⚜ Third-party integrations (EMIs, telecom, gateways) ⚜ CI/CD, Git workflows & scalable architecture design I have strong experience in Java backend systems, especially in payment and enterprise integrations where reliability and security are critical. I have worked on API-driven architectures, database optimization, and high-volume transaction systems. My approach is to design secure microservices, ensure clean architecture, and integrate external systems step by step with proper testing and monitoring. Looking forward to discussing the role and contributing long term. Warm Regards, Farhin B.

@PrateekP3003

As an experienced and versatile Full-Stack Developer, with extensive expertise in Java and software architecture, I bring to the table a unique blend of skills tailored to meet the demanding requirements of your FinTech project. With high-volume transaction processing systems, complex SQL queries for optimized database operations my skills are designed for advanced systems like financial platforms. In addition, my proficiency with modern DevOps practices using GitHub/GitLab, CI/CD pipelines means you can rely on me to deliver on time and within budget. Over the years, I have demonstrated exceptional skills integrating backend services with numerous payment gateways using Spring Boot. My deep understanding of important financial messaging protocols like ISO 8583 facilitates seamless integrations with mobile network operators, digital wallets and other third-party service providers – a necessity for a project like yours. Lastly, in line with promoting Agile development practices and conducting code reviews, I don’t only envisage myself solely working on the project but actively taking up the role of a technical leader, championing the system design and providing mentorship to junior developers when needed. For these reasons and more, I am confident in my ability to fulfil all your requirements efficiently and effectively whilst delivering scalable solutions aligned with your business needs. Looking forward to hearing from you soon.

@anshumanvermaUK

Hi, I have extensive experience with Java, Spring Boot, REST/SOAP integrations, Oracle databases, microservices, payment-related systems, and enterprise application support. My recent work includes secure API integrations, authentication systems, enterprise CRM platforms, OCR/document-processing services, and high-volume backend applications. I have strong experience with Oracle SQL optimization, WebLogic/Tomcat deployments, CI/CD, and production troubleshooting. Rate: $8/hour Availability: 30+ hours/week, long-term engagement Thanks, Anshuman

@gsantharam7088

Hello, I am interested in this opportunity and have extensive experience building scalable enterprise applications, API integrations, and backend systems. My background includes Java, Spring Boot, Spring Security, REST APIs, database design, and high-performance business applications deployed in production environments. I have worked on payment processing, billing, ERP, CRM, and integration-heavy platforms involving third-party APIs, secure authentication, transaction management, reporting, and microservice-based architectures. My expertise includes Spring MVC, Spring Data JPA, Hibernate, Oracle/MySQL/PostgreSQL databases, performance optimization, CI/CD pipelines, Docker, and cloud deployments. I am comfortable designing secure, scalable backend services, optimizing database performance, implementing complex integrations, and collaborating with distributed teams using Agile methodologies. I also have experience reviewing code, mentoring developers, and delivering production-ready solutions with strong focus on reliability and maintainability. I am available for long-term engagement and would be happy to discuss your technical requirements, team structure, and project roadmap in detail. Best Regards, Santharam G

@invoketech

ava Spring Boot FinTech Backend Systems, Payment Integrations, and Enterprise API Development. Hello, I have 9+ years of experience in backend development with strong expertise in Java, Spring Boot, and enterprise-grade financial systems. I can support your FinTech backend development, including scalable APIs, payment integrations, and third-party system connectivity. I have hands-on experience with REST APIs, microservices architecture, Spring Security, database optimization, and integration-based systems. I understand the importance of security, performance, and reliability in financial applications and can contribute to building stable and maintainable backend services. I can also work on complex integrations with external systems, improve existing architectures, and ensure clean, production-ready code with proper documentation and best practices. Let's discuss in chat, as I have a few questions regarding your current architecture, integration stack (ISO 8583 / SOAP services), and deployment environment. Thanks.

@PINESCRIPTERR

Hi, I reviewed "Spring Boot Expert for FinTech Backend Development" and can help with it. I also noticed the listed skills include Java Software Architecture Oracle Database API Development Spring Boot Spring Data. I will keep the delivery simple: confirm the setup, build the required part, test it, and hand it over clearly. My focus would be a clean technical setup around the database, API, and integration points. By putting my Oracle skills to use when optimizing, managing and designing the database component of your backend system, I strengthen performance indices resulting from complex SQL Query writing alongside defining database migration activities. Trćeminating the entire projet whether that is implying Agile methodologies Regards, Houssame

@mkrimando

Hello! Based on my understanding, you need a strong Java/Spring Boot expert to build and maintain FinTech backend services, integrate with mobile operators, digital wallets, payment switches (ISO 8583), and manage Oracle databases—all with a focus on security, performance, and scalability. My experience includes designing Spring Boot microservices for payment processing systems, integrating REST/SOAP APIs with telecom and e-money providers, implementing ISO 8583 messaging for transaction switching, and optimizing Oracle databases with complex queries and performance tuning. I've also led code reviews, mentored junior developers, and deployed on WebLogic with CI/CD pipelines. what's the expected transaction volume for the initial phase? I'm available for long-term engagement with flexible remote collaboration.

@iimtpradeepdash

I don’t work in Java or Spring Boot. My stack is Node.js, Go, and PHP for backends, with experience building FinTech and payment integrations—wallets, payment engines, complex API work. I’ve implemented ISO 8583 flows and payment provider links, but in Node.js and PHP, not in Java. If you’re open to high-performance backend in Node.js (Express/TypeScript), integrating with payment gateways, telecom operators, or wallets, and deploying to cloud or on-premise, reply and I can map how I’d approach the same integrations. If Java/Spring Boot and WebLogic are absolute requirements, my stack won’t fit. Just clarifying so you don’t waste time. Pradeep

@joshuak485

Hi, I hope you're having a great day. I have hands-on experience building backend services with Java and Spring Boot, having delivered multiple FinTech integrations and payment backends. On a recent project I connected a payment switch to several mobile operators, implementing ISO 8583 mapping in Java, using Spring Boot and Hibernate, and tuning Oracle queries for sub-second reconciliation on batch loads. I also deployed on WebLogic for the client. I'd usually start by reviewing your current API surface and Oracle schema, run a dependency sweep for SOAP and ISO 8583 endpoints, and add Spring Security rules and GitLab CI pipelines for builds and tests. If you have ten minutes, I'd like to compare notes on your ISO 8583 message set and the Oracle indexing approach so I can propose the first tasks. Thank you, Joshua Kofoworola

@nidhi0257

Seasoned IT professional with 12 years of comprehensive experience in designing, developing, and deploying secure, enterprise-level financial applications. Specialized in implementing robust, high-performance solutions using Java (Java 8, Spring Framework, Spring Boot, Hibernate), RESTful services, and front-end technologies including Swing, PHP, HTML, and CSS. Strong advocate of Test-Driven Development (TDD) with expertise in JUnit and Mockito to ensure code reliability and system integrity. Proficient in developing scalable and secure architectures aligned with best practices and design patterns. Skilled in leveraging cloud platforms such as AWS and GCP to enhance system resilience and data protection. Demonstrated success in delivering mission-critical applications for global financial institutions including Morgan Stanley, NatWest, and Citi Bank, ensuring compliance with stringent financial security standards and regulatory frameworks.

@carlosd178

Hello, As a result of a detailed review of your project requirements, I understand that you need a Senior Backend Java Developer for long-term FinTech backend development, API integrations, payment systems, and Oracle-based services. I have experience handling similar backend and financial integration projects and I’m available to start your project right now. I bring strong expertise in Java, Spring Boot, Spring MVC, Spring Data, Spring Security, REST/SOAP APIs, ISO 8583, Oracle Database, WebLogic, Software Architecture, Git, CI/CD, and API Development. One of the key challenges in projects like this is keeping high-volume payment transactions secure, reliable, and traceable while integrating with wallets, telecom operators, EMIs, and payment gateways. For this project, I can help design and maintain scalable Spring Boot services, build secure REST/SOAP integrations, optimize Oracle queries/indexes, support WebLogic deployment, and improve reliability through clean architecture, logging, error handling, and CI/CD workflow. Regarding your questions: I have 5+ years of Java/Spring Boot backend experience, including FinTech/payment-style integrations, third-party API connections, Oracle database work, and enterprise Java deployment environments. I’m available for remote long-term collaboration, and my expected rate is $8/hour. I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos.

@sgwtechnology

Hello, I’m a Senior Java Backend Developer with 8+ years of experience building high-performance FinTech and payment platforms using Java, Spring Boot, Spring Security, Hibernate, and microservices architectures. I have hands-on experience with REST/SOAP APIs, ISO 8583 integrations, digital wallets, payment gateways, telecom/mobile money systems, Oracle Database optimization, and WebLogic deployments. I’m proficient with CI/CD, Git, and secure transaction processing. Available for long-term engagement and ready to contribute immediately. I’d be happy to discuss relevant projects, availability, and rates in detail. Best regards

@arturg6

Hello, ISO 8583 integration – ensuring reliable financial messaging while keeping latency low. I’ll containerize the Spring services with Docker and tune Oracle SQL queries, keeping API responses under 200 ms even at peak load; my recent digital‑wallet engine required the same PCI‑DSS compliance focus. Do you prefer Oracle WebLogic or a containerized deployment for the new services? Looking forward to working with you. Artur Giżycki

@toqeer74

Read this twice. You need someone with deep Spring Boot expertise and a solid grasp of API integrations, especially with financial protocols like ISO 8583. I can lead backend development for your FinTech projects, focusing on performance and security. I can deliver an initial milestone in exactly 30 days. Let's run a quick test task. If you're happy, we move forward. Simple.

@Anika1802

Hi, I've reviewed your requirements and this looks like a solid long-term FinTech project. I can help build secure, scalable backend services with a strong focus on API integrations, performance, and reliability. A few quick questions: • Are the existing payment and wallet systems already in place, or will they be built from scratch? • Which third-party providers (telecom operators, wallets, EMIs, or payment gateways) need to be integrated? • Is the infrastructure already running on Oracle WebLogic, or are you open to architecture recommendations? I'm interested in a long-term collaboration and can support future enhancements, integrations, and ongoing maintenance. Looking forward to discussing the project further. Best regards, Vandini

@Ramankmehta

Hello, I am interested in this opportunity. I have experience developing scalable backend applications, REST APIs, third-party integrations, and enterprise web applications using Java, Spring Boot, Spring Data, Spring Security, and relational databases. My experience includes: • Java & Spring Boot backend development • REST/SOAP API integrations • Microservices architecture • Oracle/MySQL/PostgreSQL database development and optimization • CI/CD, Git, and Agile development practices • High-performance and secure backend systems I am comfortable working on long-term projects and collaborating with distributed teams. Your focus on FinTech integrations, payment systems, scalability, and reliability aligns well with my backend development experience. I would welcome the opportunity to discuss your requirements in more detail and learn more about the project scope, team structure, and expectations. Thank you for your consideration. Best regards, Raman K.