Senior Engineer, Internal tools

BJAK is seeking a Senior Engineer for their internal tools team. The role involves building and maintaining platforms that enhance organizational efficiency, owning systems end-to-end, and integrating multiple business systems into a seamless internal ecosystem.

Responsibilities:

• Design, build, and maintain internal platforms and tools that serve People, Finance, Ops, Sales, and Engineering teams
• Own features end-to-end: requirements, architecture, implementation, testing, deployment, and monitoring
• Write clean, well-tested, production-grade code. You hold yourself to the same bar as customer-facing products
• Build API-first integrations across the internal ecosystem — connecting HRIS, CRM, finance platforms, knowledge management, and developer tools into a coherent stack
• Design for reliability, performance, and scale — what you build today must hold as the company grows 5–10x
• Eliminate data silos. Build clean data pipelines that maintain a single source of truth across systems
• Own your services in production: monitoring, alerting, incident response, and post-mortems
• Build AI/LLM-powered features into internal workflows — automating approvals, knowledge retrieval, reporting, content generation, and operational processes
• Move fast from prototype to production. You know the difference between a demo and a system that works at scale
• Stay current on emerging AI capabilities and proactively identify where they unlock step-change improvements in internal productivity
• Work directly with business stakeholders to understand pain points and translate them into technical solutions. You don’t wait for a spec — you help shape it
• Pair with and mentor junior engineers. Raise the technical bar through code reviews, design reviews, and leading by example
• Influence technical direction: propose architectural improvements, challenge assumptions, and drive best practices across the team

Requirements:

• 5+ years of professional software engineering experience, with meaningful time spent building internal tools, platforms, or business systems
• Strong full-stack or backend engineering skills. Proficient in at least one of: Python, Go, TypeScript/Node.js, or Java
• Solid understanding of cloud infrastructure (GCP/AWS/Azure), containerisation (Docker/Kubernetes), CI/CD pipelines, and modern DevOps practices
• Hands-on experience building and maintaining API integrations between third-party SaaS platforms (e.g., Workday, Salesforce, Slack, NetSuite)
• Strong data fundamentals: relational databases, data modelling, ETL/ELT pipelines, and working knowledge of SQL
• Comfort with ambiguity. You can take a vague business problem, break it down, and deliver a working solution without heavy hand-holding
• Clear communicator who can explain technical tradeoffs to non-technical stakeholders
• Experience with workflow orchestration tools (Temporal, Airflow, Prefect) or integration platforms (Workato, Tray.io, MuleSoft)
• Frontend experience with React, Next.js, or equivalent modern frameworks
• Familiarity with HRIS, ERP, or people systems data models and processes
• Experience at a high-growth or AI-native company
• Contributions to developer experience tooling, CLIs, or internal SDKs
• Experience building or integrating AI/LLM-powered features — not just experimenting, but shipping to real users