Backend Engineer

Konnco Studio; Bantul ꦧꦤ꧀ꦠꦸꦭ꧀; On-site; IDR 200,880,000 - 357,120,000; Full time

Job summary

Konnco Studio in Bantul, Indonesia, is seeking a backend engineer to design, build, and maintain Go services with fintech-grade reliability. You will own REST and gRPC APIs, optimize PostgreSQL schemas, and implement caching to reduce latency and load.

Work is on-site in Bantul (WFO) with join ASAP. The role requires strong PostgreSQL skills, Redis caching, Docker containerization, and a solid Git workflow, plus a proactive communication style.

Qualifications

• 1-2 years of backend engineering experience, preferably in fintech.
• Strong PostgreSQL skills, including schema design, query optimization, transactions, and migrations.
• Familiar with caching using Redis or equivalent, along with REST and gRPC API design.
• Comfortable working with Docker for containerized services.
• Solid Git workflow, including branching, pull requests, and code review.
• Understands fintech engineering practices such as idempotency, decimal precision for monetary values, audit logging, and safe concurrent transactions.
• Good communicator, proactive in flagging blockers, and open to learning new technologies.
• Willing to work on-site (WFO) in Bantul (Join ASAP)

Responsibilities

• Design, build, and maintain backend services in Go
• Design and implement REST APIs and gRPC services for internal and external consumers
• Model and optimize PostgreSQL schemas, queries, and migrations
• Implement caching strategies to improve latency and reduce database load
• Containerize services with Docker and support deployment pipelines
• Ensure data integrity, idempotency, and correct handling of financial transactions
• Write tests, participate in code reviews, and contribute to technical documentation

Skills

Go

REST APIs

gRPC

PostgreSQL

Redis

Docker

Git

Tools

Docker

Redis

PostgreSQL (advanced)

Job description

Design, build, and maintain backend services in Go

Design and implement REST APIs and gRPC services for internal and external consumers

Model and optimize PostgreSQL schemas, queries, and migrations

Implement caching strategies to improve latency and reduce database load

Containerize services with Docker and support deployment pipelines

Ensure data integrity, idempotency, and correct handling of financial transactions

Write tests, participate in code reviews, and contribute to technical documentation

Requirements

• 1-2 years of backend engineering experience, preferably in fintech


• Strong PostgreSQL skills, including schema design, query optimization, transactions, and migrations


• Familiar with caching using Redis or equivalent, along with REST and gRPC API design


• Comfortable working with Docker for containerized services


• Solid Git workflow, including branching, pull requests, and code review


• Understands fintech engineering practices such as idempotency, decimal precision for monetary values, audit logging, and safe concurrent transactions


• Good communicator, proactive in flagging blockers, and open to learning new technologies


• Willing to work on-site (WFO) in Bantul (Join ASAP)