Senior Full Stack Engineer

Learning Time Limited; Jakarta Utara; On-site; IDR 300.000.000 - 400.000.000; Full time

Job summary

A leading educational technology firm in Indonesia is seeking a backend architect to design and build their AI-powered app. The ideal candidate will have over 3.5 years of backend experience, mastery of Supabase or Postgres, and a strong security mindset. This role involves backend architecture, API design, and implementing data compliance for Indonesian parents. Join us to innovate in early childhood education and make a difference in children’s learning experiences.

Benefits

12 days of annual leave

Great platform to learn new skills

Excellent office environment

Qualifications

• 3.5+ years production backend experience.
• Expertise in Supabase or mastery of Postgres.
• Skills in API design and security.

Responsibilities

• Design and build the entire backend on Supabase.
• Own data architecture, API design, and optimization.
• Implement authentication, authorization, and compliance.

Skills

Production backend experience

Supabase expertise

API design skills

Security-first mindset

Startup experience

AI-assisted coding proficiency

Job description

We’re building Learning Time Digital, an AI-powered app that will help Indonesian parents become their child’s best first teacher. We are seeking an ambitious, technically capable and proactive individual who is excited to build and grow together. If you do not meet the technical requirements, your application will not be considered.

Main Responsibilities

• You will be the backend architect and engineer. Everything data, infrastructure and APIs will be yours.
• Design and build the entire backend on Supabase (Postgres, Auth, Row-Level Security, Edge Functions, Realtime)
• Own data architecture, API design, and database optimization
• Implement authentication, authorization, and data privacy (Indonesia PDP Law compliance)
• Set up monitoring, logging, error tracking, and performance optimization
• Connect backend to AI agent system
• Build APIs for frontend consumption (React Native app)
• Integrate third-party services (payments, analytics, push notifications)

Infrastructure and Development Operations

• Set up CI/CD pipeline (automated testing, deployment, rollbacks)
• Production infrastructure, staging environments, backup strategies
• Security hardening and cost monitoring

Non-Negotiable Requirements

• 3.5+ years production backend experience - you have shipped real products to real users
• Supabase expertise or Postgres mastery - you know relational databases deeply (we can teach Supabase specifics if you’re a Postgres expert)
• API design skills - you have built APIs that frontends actually love using
• Security-first mindset - data privacy isn’t an afterthought for you
• Startup experience or mentality - you thrive in ambiguity and move fast
• Cursor or AI-assisted coding proficiency - you use Cursor, Windsurf, GitHub Copilot, or similar to code 3x faster

Strong Preferences

• Experience with AI/ML product integrations (LangChain, vector databases, streaming APIs)
• Mobile backend experience (understanding mobile constraints like offline-first, battery, bandwidth)
• CI/CD and DevOps comfort (GitHub Actions, monitoring tools, infrastructure-as-code)
• Experience working remotely in distributed teams

Culture Fit

• Bias to action - you ship fast, iterate faster, don’t wait for perfection
• Ownership mentality - you see a problem, you fix it (no "not my job")
• Comfortable with uncertainty - scope will change, we will pivot, you stay flexible
• Direct communication - you tell me what’s broken, what’s risky, what needs to change

Must Include in Application

• Resume/CV (PDF)
• GitHub or Portfolio (show us what you’ve built)
• Answer these 3 questions (3-5 sentences each):
• Why this role? What excites you about building this product for Indonesian parents?
• Your biggest backend challenge: Describe a hard technical problem you solved. What made it hard? How did you solve it?
• What you enjoy

What you enjoy

• 12 days of annual leave
• Great platform to learn and develop new skills
• Excellent office environment

About Learning Time Indonesia

With over 25 years of experience in early childhood education, Learning Time is a company that is passionate about supporting parents on their journey of bonding, playing and learning with their babies. We partner with experts to innovate, design and create educational children’s play essentials. Our brand is here to make a difference and reimagine what playtime looks like in the first 1000 days.