Senior Backend Developer

Description

Who are we? 

Planck is the AI Innovation Hub of Applied Systems, where we build the technologies shaping the future of insurance. We're building the next generation of agentic systems, leveraging LLMs, modern AI technologies, and large-scale distributed systems to solve complex real-world problems. Our products help insurance professionals make better decisions and improve the experience of people who rely on insurance every day. Long before generative AI became mainstream, we were building products powered by deep learning and machine learning. AI isn't something we're adding - it's been part of our DNA since day one. 

Joining Planck means building AI that creates real-world impact. You'll tackle complex challenges, collaborate with exceptional people across disciplines, and see your work used by customers around the world. We move fast, take ownership, and turn ideas into reality with the agility of a startup and the scale of a market leader. We're a team of curious builders who believe great products are built by great people. 

The Problems You'll Solve 

You will join one of our backend teams, building the microservice-based systems that power our product. The team owns a range of backend services, from product-facing APIs to the infrastructure that moves and transforms business data from our data lake, through our warehouse, into Elasticsearch, supporting features like our internal search engine, AI agents, and more. You'll design and build services at real scale, balancing performance, reliability, and growing throughput as the product evolves. This is backend engineering with direct product impact: the services and systems you build power capabilities our users and internal teams rely on every day. 

The Mindset You'll Need  

We are looking for a top-tier Backend Engineer with 5+ years of experience building complex production systems. The ideal candidate has experience designing and building distributed systems and can comfortably reason about performance, reliability, scalability, and maintainability. You are passionate about writing high-quality code, continuously improving engineering practices, and building backend infrastructure that delivers meaningful impact to both customers and the business. You embrace emerging technologies, including AI-powered development tools, and are excited to help shape modern software engineering practices in the AI era. 

Requirements

The Skills You'll Bring 

• 5+ years of hands-on experience as a Backend Developer 
• Superb analytical and problem-solving abilities 
• Great communication and collaboration skills 
• Hands-on experience with Python and/or Java 
• Experience working with microservices architecture 
• Comfortable working with AI-powered development tools (e.g., Copilot, Cursor, Claude) 
• Previous experience in a SaaS company 
• Advantage: experience tackling scalability challenges, developing enterprise-grade solutions, or working with large-scale data infrastructure 

Benefits

Why Join Planck? 

• AI-First Products at Scale: Build autonomous agentic systems and LLM-powered products serving real customers at global scale.  
• Make a Real-World Impact: Build AI products that help transform the insurance industry, enabling insurance professionals to make better decisions and improving the experience of millions of people who rely on insurance every day.  
• True Autonomy: End-to-end ownership—from architectural design to live production—with startup agility and enterprise backing.  
• Builder-First Culture: Low ego, high collaboration. Work alongside curious engineers and grow your personal brand through blogs, meetups, podcasts, and major tech conferences.