Senior Backend Engineer II - Scalable FinTech APIs (Remote)

PT Ajaib Sekuritas Asia; Jakarta Pusat; Remote; IDR 480,000,000 - 720,000,000; Full time

Benefits offered by this job

Performance Bonus

Private Insurance - Comprehensive健康保険

Paid Time Off

Learning & Development

Hybrid Work Arrangement

Career Growth

Employee Perks

Collaborative & High-Ownership Culture

Job summary

Ajaib Group is seeking a Senior Backend Engineer II to own shared backend services powering multiple products, from design to production. You will mentor engineers, design scalable APIs, and ensure reliability and security under real traffic.

Join a globally distributed team embracing a hybrid work arrangement, with a focus on ownership, observability, and continued platform evolution across identity, notifications, configuration, and API gateways.

Qualifications

• Bachelor's degree in Computer Science or equivalent practical experience.
• 5+ years of professional backend engineering experience with ownership of production services.
• Proficiency in Java or Go.
• Strong understanding of microservices, REST/gRPC, event-driven design, reliability and observability.
• Experience with relational and NoSQL databases, Redis, and Kafka.
• Knowledge of OAuth2/OpenID Connect/JWT and secure coding.
• Cloud experience (GCP or AWS), containers and CI/CD.
• Ownership mindset and strong communication; fintech or regulated environment is a plus.

Responsibilities

• Design, build and run scalable, secure shared backend services and APIs used by many product teams.
• Own larger services end to end, including monitoring, alerting, on-call follow-up and support.
• Design APIs that stay stable: contracts, versioning, backward compatibility and deprecation.
• Build and improve identity and access features, such as sign-in, sessions, tokens, permissions and account security.
• Make shared services resilient: rate limiting, graceful degradation, isolation between consumers and safe rollouts.
• Improve observability with useful metrics, logs and traces, and set service level objectives with the teams that depend on you.
• Lead design reviews and give thoughtful code reviews.
• Investigate production incidents, run root cause analysis and ship lasting fixes.
• Mentor mid-level engineers and share knowledge within the team.
• Work with product engineering teams, Security, Infrastructure and Architecture to turn requirements into reliable solutions.

Skills

Java

Go

Microservices

REST/gRPC APIs

Cloud platforms

CI/CD

Security

Observability

Education

Bachelor's degree in Computer Science

Tools

Redis

Kafka

GCP

AWS

Kubernetes

CI/CD pipelines

Job description

Ajaib Group is seeking a Senior Backend Engineer II to own shared backend services powering multiple products, from design to production. You will mentor engineers, design scalable APIs, and ensure reliability and security under real traffic.

Join a globally distributed team embracing a hybrid work arrangement, with a focus on ownership, observability, and continued platform evolution across identity, notifications, configuration, and API gateways.