About Sivasyam
As a Senior Software Engineer at Solarisbank AG, I bring over three years of experience in designing and optimizing scalable backend systems for fintech solutions. My work focuses on real-time card authorization and settlement processes, leveraging in-depth knowledge of ISO 8583 standards, Spring Boot, Microservices and AWS services like ECS, Lambda, and RDS. By collaborating with cross-functional teams, I contribute to delivering reliable and efficient payment infrastructure that supports Visa and Mastercard integrations.
Dedicated to advancing financial services, I specialize in building secure, high-performance backend infrastructure. My role emphasizes system reliability, robust error handling, and continuous improvement of development practices. Through innovation and teamwork, I aim to enhance the scalability and resilience of FinTech platforms while driving impactful solutions in the financial services domain.
English
Native or bilingual
German
Basic
Can work on-site
Berlin (up to 50km)
Experience
- HeycarSenior Backend EngineerOctober 2020 - December 2021 (1 year and 2 months)Berlin, Germany
- Developed backend services for marketplace and dealer integrations using Java, Kotlin, and Spring Boot.
- Designed microservices for finance and lead-partner services.
- Built integrations with external financial partners and dealer platforms.
- Worked with AWS services including EKS, SQS, S3, Firehose, and EC2.
- Contributed to architecture decisions, CI/CD processes, and production support.
- Provided technical mentoring and code reviews to team members.
- Bonify GermanyBackend developerJuly 2018 - September 2020 (2 years and 2 months)Berlin, Germany• Backend Developer working with cross-functional team to develop and maintain bank-connector, partner-connector and scoring service• Developed microservices using java and spring boot• Worked on distributed version control system like Git and Source Tree for GUI• Worked on build tool in Maven and Gradle• Worked on Message broker like RabbitMQ• Integration of bank partner APIs• Successfully implemented PSD2 API changes• Responsible for development to deployment, including troubleshooting and production fixes• Reviewing code written by the team and provide the review comments
- CapgeminiConsultantMarch 2016 - June 2018 (2 years and 3 months)Hyderabad Metropolitan Area, Telangana• Developed the J2EE application based on the Rest API web services• Worked on spring framework• Involved in all agile sprints• Worked on build tool in Maven and Ant• Actively participated in all sprint planning’s• Provided technical implementations to the team members• Reviewing code written by the team and provide the review comments• Working on critical issues• Providing technical inputs design and coding to the team members• Developing architecture for new projects• Prepared new Micro-service architecture for migration project
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Education
- MCAIndira Gandhi National Open University2009MCA
- Bachelor of Science - BSAcharya Nagarjuna University2005Bachelor of Science - BS