Senior Backend Engineer (Java, remote) in Infinity Group Sp. z o.o.

We are looking for a full-time Developer for our client Rakuten Symphony.

Rakuten Symphony CPaaS platform provides communication APIs to global and domestic enterprises in Japan over various channels such as SMS, Voice, Email & RCS. We design and develop CPaaS services for enterprises. The CPaaS team is a dynamic and innovative team dedicated to providing high-quality communication services to Enterprises. We are looking for a talented and senior Backend Engineer to join our growing team and contribute to the development of cutting-edge backend applications.

Location: Remote work (possible relocation to Tokyo)

Working hours: starting 6 or 7 a.m. (8-hour shifts)

Our offer:

• Market-competitive salary
• B2B contract preferred, CoE possible
• Subsidized Multisport card
• Subsidized medical package
• 20 days of paid leave
• Work in an international team in a renowned company

Online recruitment process:

• CV analysis
• HR interview
• Client's HR interview
• Client's Technical interview + Managerial interview
• Decision

• B.S. or equivalent in Computer Science with at least 6+ years of proven hands-on core backend SW engineering expertise in Java (v17+).
• Proven experience developing and optimizing data pipelines for ingesting, processing, and analyzing large data sets while using modern data tools and ensuring data integrity, consistency, and quality across all systems.
• Experience in developing and maintaining reporting systems that provide actionable insights to stakeholders while collaborating with product & business teams to enhance data reporting capabilities.
• Experience with real-time data processing and stream processing frameworks. Database experience in ELK/Kafka.
• Experience in a team lead role - an advantage.
• Experience with containerization and orchestration tools (e.g., Docker, Kubernetes). Cloud-based deployment expertise with experience in continuous integration/continuous delivery systems. Jenkins/Docker/Kubernetes, AWS - an advantage
• Well-versed with DevOps practices and CI/CD pipelines.
• Strong understanding and experience in low-level networking & inter-networking. Experience in SaaS, API-based, communication systems.
• Extensive knowledge and experience in Linux
• Experience developing high-profile production systems with 24/7 availability, low latency and highly available redundant solutions.
• Ability to present concepts and architectures effectively to the team.
• Problem solver and high troubleshooting skills
• Ability to work autonomously and collaborate as a team player.
• Ability to work as a member of a big remote team spread across the globe.
• Strong communication and leadership skills, with proactive communication internally and externally to address any blockers.
• Ability to take full responsibility for a task or feature, delivering it independently with high quality from start to finish
• Experience in writing unit tests and integration tests on a large scale
• Experience in conducting large-scale refactors on a fast-moving product.
• Understanding accessibility and security compliance.
• Implement analytics solutions to monitor system performance, user behaviour, and key metrics.
• Experience in building reporting and analytics as part of product features.

We are looking for a full-time Developer for our client Rakuten Symphony.

Rakuten Symphony CPaaS platform provides communication APIs to global and domestic enterprises in Japan over various channels such as SMS, Voice, Email & RCS. We design and develop CPaaS services for enterprises. The CPaaS team is a dynamic and innovative team dedicated to providing high-quality communication services to Enterprises. We are looking for a talented and senior Backend Engineer to join our growing team and contribute to the development of cutting-edge backend applications.

Location: Remote work (possible relocation to Tokyo)

Working hours: starting 6 or 7 a.m. (8-hour shifts)

Our offer:

• Market-competitive salary
• B2B contract preferred, CoE possible
• Subsidized Multisport card
• Subsidized medical package
• 20 days of paid leave
• Work in an international team in a renowned company

Online recruitment process:

• CV analysis
• HR interview
• Client's HR interview
• Client's Technical interview + Managerial interview
• Decision
,[Be a part of the Rakuten Symphony hands-on core development/engineering Backend team. Work closely with the development team in an agile manner to release new features and enhancements for the CPaaS backend service., Develop backend services, ensuring seamless integration with frontend services. Implement and maintain high-quality code, following best practices and coding standards. Optimize service performance, ensuring the right metrics are exposed to monitor and anomaly detection., Conduct code reviews and provide constructive feedback to team members., Collaborate with SRE, and frontend engineers to develop and implement prototypes., Troubleshoot and resolve back-end end issues, bugs, and performance bottlenecks., Participate in Agile/Scrum development methodologies, including sprint planning, stand-ups, and retrospectives., Work in a global team spread across Japan, India and the UK in different time zones. Open to off-hour availability due to work as required., Make the best use of productivity improvement tools such as JIRA & confluence. Participate in daily team huddles and present work status for visibility. Actively contribute to overall improvement projects within the team. , Collaborate with cross-functional teams to understand project requirements and translate them into features.] Вимоги: Java, Kafka, CI/CD, Docker, Kubernetes, Continuous integration, SaaS, API, Linux, Writing unit tests, ELK Stack, AWS, Jenkins Бонуси та переваги: Sport subscription, Private healthcare, International projects.