The Role
BJAK builds technology products used by millions of users across Southeast Asia. As our products and systems scale, we need technical leaders who can solve difficult engineering problems and raise the engineering bar around them.
The Lead Software Engineer owns technical direction and execution for major products and systems. This is a hands-on role - you will design systems, write code, and drive critical engineering work from idea to production.
What You'll Own
Owning technical design and execution for major products, systems and engineering initiatives.
Designing scalable, reliable systems across backend, frontend, APIs, databases and infrastructure.
Building alongside the team through coding, prototyping, code reviews, debugging and production problem-solving.
Driving architecture decisions and trade-offs across speed, scalability, reliability, cost and maintainability.
Turning ambiguous product problems into clear technical solutions and execution plans.
Raising engineering quality through stronger system design, testing, security, observability and development practices.
Leading technically critical initiatives and mentoring engineers across teams.
What We're Looking For
7+ years of software engineering experience building and shipping production systems.
Deep expertise in backend, frontend, distributed systems, APIs, databases or cloud infrastructure.
Strong system design and architecture skills for complex or high-scale systems.
Strong coding ability and willingness to remain hands-on.
Track record of technically leading major engineering projects from design through production.
Ability to make sound technical trade-offs, influence engineers and solve complex production problems.
Nice to have
Experience scaling engineering teams, systems or development practices through significant growth.
Experience operating across multiple products, markets or countries.
Location
This is a remote role. We hire globally and work across multiple countries and time zones.
Candidates should be comfortable working effectively in a distributed, fast-moving international team and collaborating with colleagues across different locations.
Language
English is our main working language across global teams. Strong English communication is required.
Interview Process
Our process is designed to move fast:
Online assessment or practical task
Technical interview
CEO / final round
For strong candidates, we aim to complete the process and make an offer within 1 week from the start of the interview process. Candidates who complete assessments quickly will be prioritized.
A1 is building a proactive AI smart assistant designed for everyday users to bring intelligence to conversations, errands, organizing, and workflows. The company's product focuses on achieving high reliability for long-running workflows with persistent context and real-world task completion capabilities. The system handles multi-step reasoning, interacts with external tools, and maintains reliability despite non-deterministic model behavior. A1 is developing production AI systems that serve features across mobile and desktop clients, with a focus on latency, correctness, reliability, and cost optimization.
