Senior Backend Engineer

About Ajaib At Ajaib, we are on a mission to democratize financial freedom for millions of Indonesians. As Southeast Asia’s fastest fintech unicorn, we handle high-volume investments across stocks, crypto, and digital banking. We operate with an impact-driven purpose where everyone is the owner of our customers' satisfaction. Driven by a growth mindset and a fierce will to win, we refuse to settle and constantly push engineering boundaries. Role Overview As a Backend Engineer at Ajaib, you will play a crucial role in designing, developing, testing, and deploying robust software solutions that impact millions of users. You will collaborate closely with product and business leaders to provide solution guidance, mentor fellow engineers, and contribute to our high-velocity engineering culture.

Responsibilities

• Design, develop, test, and deploy resilient software solutions powering high-scale financial platforms.

• Deliver high-performance, low-latency services capable of handling high transaction volumes.

• Build and optimize fault-tolerant distributed systems under rapid growth demands.

• Collaborate with product and business stakeholders to navigate technical constraints and requirements.

• Share past experiences, maintain elite technical execution discipline, and mentor fellow engineers.

• Deploy to hybrid environments and provide operational technical assistance.

• Use AI with “human in the loop” principle in mind and critical and mindful assessment of the AI solutions

• Learn new technologies and concepts quickly with a genuine curiosity.

• Experience: Minimum 3+ years of professional software development experience, with a strong focus on distributed systems or backend architecture.

• Languages & Frameworks: Highly proficient in one or more of the following core programming languages and frameworks: Java, C, Go, or Rust.

• Databases: Solid practical experience with MySQL or PostgreSQL, including query tuning and optimization. Experience with Redis is a big plus.

• Message Brokers: strong, practical experience building asynchronous processing and system decoupling in a reliable and retriable way. Experience with Kafka, NATS is a strong plus.

• Cloud Infrastructure: Skilled practitioner of deployments onto major cloud players. GCP experience is a strong plus, Kubernetes knowledge is a strong plus.

• Autonomy: Ability to work individually with limited guidance, highly responsible, and self-motivated.

• Mindset: Passionate about technology, software craftsmanship, and continuous learning.

• Performance Bonus - Get rewarded for the impact you make

• Private Insurance - Comprehensive health coverage for you

• Paid Time Off - Take the time you need to recharge and come back stronger

• Learning & Development - Company-sponsored training, courses, and professional certifications

• Hybrid Work Arrangement - Enjoy the flexibility of working both remotely and from the office

• Career Growth - Work closely with experienced leaders and take on meaningful ownership as we scale

• Employee Perks - Enjoy exclusive discounts, partnerships, and lifestyle perks

• Collaborative & High-Ownership Culture - Work with smart, driven people in cross-functional teams, take ownership, and make a meaningful impact for our users.

Join us as we make magic happen to increase Indonesia’s financial inclusion!