Senior Software Engineer (Ruby on Rails)

Luce Maintenance Group; Jakarta Utara; On-site; IDR 200.000.000 - 300.000.000; Full time

Job summary

A tech-enabled services platform is seeking a Senior Software Engineer in Jakarta. You'll own features in Ruby on Rails, mentor junior staff, and lead code reviews. The ideal candidate has deep experience in Rails and solid skills in Postgres. This role offers a competitive salary range of Rp. 28,500,000 to Rp. 36,500,000 along with additional bonuses, making the total compensation between 14 to 15 months' salary annually.

Benefits

Great working environment

13-month salary (Festive Allowance)

1-2 month Performance Bonus

0.5 month Company performance bonus

Qualifications

• 5‑8 years in production systems with at least 4 years dedicated to Rails.
• Strong skills in Postgres and ActiveRecord optimisation.
• Experience with CI/CD pipelines and Docker-based deployments.

Responsibilities

• Own medium‑to‑large features and refactor in Rails.
• Review peers’ tech design documents and lead code reviews.
• Mentor junior engineers and manage code quality.

Skills

Ruby on Rails

Postgres

Rails quality

React

Test automation

Docker

Job description

Senior Software Engineer (Ruby on Rails)

Luce is a tech-enabled services platform that provides a full range of services from home cleaning to babysitting. Our vision is to give everyone the help they need at their fingertips through our web and mobile applications.

We have been recognized by the Financial Times as one of Asia-Pacific’s Fastest Growing Companies 2025 and included in the list of 100 Singapore’s Fastest Growing Companies 2025.

We are looking for a Senior Software Engineer to join us in our Jakarta, Indonesia Office.

What You’ll Be Doing

• Own medium‑to‑large features and domain refactors in Rails, including data‑model design, performance tuning, and background job orchestration.
• Author and socialise tech design docs for backend‑heavy initiatives; review peers’ designs.
• Break epics into stories, estimate, and drive incremental delivery.
• Occasionally extend existing React/TypeScript code to wire new endpoints or tweak UI flows; deeper FE work is delegated or paired.
• Lead code reviews with a focus on Rails quality, DB indexes, query optimisation, and test depth.
• Mentor 1‑2 juniors; take primary on‑call shifts and own post‑mortems.

About You

• 5‑8 yrs in production systems, ≥4 yrs deep in Rails; strong Postgres and ActiveRecord optimisation skills.
• Proven record of shipping user‑impacting features and driving performance wins in large Rails codebases.
• Comfortable making incremental changes in React/TypeScript, but primary strength is backend.
• Hands‑on with test automation, CI/CD pipelines, Docker‑based deploys.
• Experience mentoring juniors and raising code‑quality bars.
• Ability to instrument code and interpret dashboards for reliability metrics.

Tech Stack You’ll Work With

Backend: Ruby (3.2), Ruby on Rails (7+), Redis, Postgres.

Architecture: Monolith split into domains; interactor pattern.

Testing: RSpec, VCR.

Monitoring: New Relic, Sentry.

Cloud & Infrastructure: Digital Ocean, Docker.

Interview Process

• Paid take‑home project implementing Rails business logic (4‑6hrs).
• Technical Review call to discuss solutions & career achievements.
• Culture‑fit call with our CEO.

Job Highlights

• Salary Range: Rp. 28,500,000 - Rp. 36,500,000
• Great working environment
• Work with other like‑minded, growth‑focused individuals
• 13‑month salary (Festive Allowance)
• 1‑2 month Performance Bonus
• 0.5 month Company performance bonus
• Total average 14 – 15 months salary a year