Senior Backend Engineer II - Trading Platform (Remote)

Ajaib Group; Jakarta Pusat; Remote; IDR 500,000,000 - 800,000,000; Full time

Benefits offered by this job

Performance Bonus

Private Insurance

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 in the Investment team to own backend services behind stock trading—from design to production. You will design and build scalable, secure services for trading, market data and portfolios, mentor engineers, and drive reliability under high traffic.

Collaborate with Product, Operations and Compliance to turn requirements into robust, observable solutions, while maintaining a strong ownership mindset.

Qualifications

• Bachelor's degree in Computer Science or equivalent practical experience.
• 5+ years of professional backend engineering with ownership of production services under high traffic.
• Strong in Java, Go or another modern backend language.
• Solid understanding of microservices, REST/gRPC APIs, event-driven design, and reliability and observability.
• Hands-on with relational and NoSQL databases, caching (Redis) and messaging (Kafka).
• Experience running services on cloud platforms (GCP or AWS), with containers and CI/CD.
• Ownership mindset and clear communication; capital markets or regulated, high-traffic environments are a strong plus.

Responsibilities

• Design, build and run scalable, secure backend services and APIs for trading, market data and portfolio features.
• Own larger features end-to-end, including monitoring, alerting and on-call follow-up.
• Design for correctness: accurate money handling, idempotent requests, safe retries and audit trails.
• Keep services fast and stable at market open and during peak volume with capacity planning.
• Integrate with exchange, clearing, banks and other external systems with resilient integrations.
• Lead design reviews and provide thorough code reviews.
• Investigate incidents, perform root-cause analysis and ship lasting fixes.
• Mentor mid-level engineers and share knowledge within the team.
• Collaborate with Product, Operations and Compliance to translate requirements into reliable solutions.

Skills

Java

Go

Microservices

REST/gRPC

Event-driven design

Observability

Relational databases

NoSQL databases

Redis

Kafka

Cloud: GCP/AWS

Containers

CI/CD

Ownership mindset

Capital markets experience

Education

Bachelor's degree in Computer Science or equivalent

Tools

Kafka

Redis

Docker/Kubernetes

GCP/AWS

Job description

Ajaib Group is seeking a Senior Backend Engineer II in the Investment team to own backend services behind stock trading—from design to production. You will design and build scalable, secure services for trading, market data and portfolios, mentor engineers, and drive reliability under high traffic.

Collaborate with Product, Operations and Compliance to turn requirements into robust, observable solutions, while maintaining a strong ownership mindset.