Kotlin Jobs

Figure is an AI robotics company developing autonomous general-purpose humanoid robots with the goal of shipping human-level intelligent robots for home and commercial markets. We are seeking an Android lead to take full ownership of Figure's consumer Android application, which will pair with proprietary hardware and handle high volumes of data. As the founding Android engineer, you will define the technical direction, launch the app, and build the team.

$200k - $400k

Brex is seeking a Staff Software Engineer to join their Product Data Platform (PDP) team. This role will focus on building and operating high-performance data, query, and search infrastructure that powers critical Brex product experiences, including AI-powered data products. The PDP team's mission is to make Brex customizable, scalable, and reliable for finance teams through deeply optimized, production-grade distributed systems. As a Staff Software Engineer, you will shape the technical direction of the platform across multiple teams, identifying and resolving high-impact architectural problems, and driving them to resolution. You will be accountable for the group's technical quality, balancing long-horizon strategy with hands-on execution, and leading through influence.

$240k - $300k

Brex is seeking a Staff Software Engineer to join their Product Data Platform (PDP) team. This role will focus on building and operating high-performance data, query, and search infrastructure that supports critical Brex product experiences, including AI-powered features. The PDP team's mission is to enhance Brex's customizability, scalability, and reliability for finance teams through deeply optimized, production-grade distributed systems. As a Staff Software Engineer, you will be instrumental in shaping the technical direction of the platform across multiple teams, identifying and resolving high-impact architectural challenges, and driving them to completion. You will be responsible for the group's technical quality, bridging long-term strategy with hands-on execution, and leading through influence.

$240k - $300k

Sierra is a leading platform for customer-facing AI agents, transforming how businesses serve customers and grow. This role focuses on the core systems that power these AI agents across various communication channels, including phone calls, SMS, WhatsApp, email, and in-app chat. You will be instrumental in building the future of how entire industries operate with AI agents, tackling complex challenges in real-time, multi-modal conversations and ensuring seamless integration with global communication networks. The team is responsible for making AI voice feel like a real conversation, developing safe integration methods for personal AI assistants, and building the agent experience within customer applications.

$230k - $390k

Toast is seeking a Staff Software Engineer to join the Developer Experience team. This role will focus on setting the technical direction for how Toast engineers build software, identifying and solving high-leverage problems within the developer workflow. You will design and build solutions that impact hundreds of services and teams, with a particular focus on defining the future of AI-native developer experiences. The Developer Experience team builds the tools and platforms that Toast engineers use daily, including local development environments, build tooling, shared libraries, internal developer portals, and testing frameworks. Our goal is to empower every engineer at Toast to be faster, more independent, and more confident in their work.

$151k - $309k

We are seeking a Staff Full Stack Engineer to lead the technical direction of the team responsible for Alpaca's Trading API product. This product serves developers, traders, and institutions, and the team owns the entire customer experience, from platform access and account security to the applications used for trading. The role involves working across the full stack, including customer-facing trading applications, identity and permission systems, and integrations for partner apps and AI agents. This is a high-trust domain where system defects can have significant consequences, so we are looking for an engineer with proven experience in building and owning critical systems like identity, authorization, account models, and financial applications. While you won't manage people directly, you will lead through architecture, code, design reviews, and mentorship, acting as the senior technical anchor for the team.

Toast is seeking a Staff Software Engineer to join the Voice AI Team. This role will be instrumental in building and operating the voice platform that powers Toast and developing novel applications on top of it. This is a greenfield opportunity where the platform and its use cases are being defined, and your work will be foundational for years to come. You will take end-to-end ownership of significant projects, including system design, execution, and technical decision-making. Collaboration with product, engineering, and stakeholders across Toast will be key to transforming ambiguous problems into reliable, scalable systems.

$151k - $309k

Faire is a technology wholesale platform connecting independent retailers with global product discovery. We are seeking a Staff Product Engineer to join our Discovery Search team (Search FX). This role will be a primary technical architect for our retailer-facing search surfaces, owning the technical roadmap for search, recommendations, and Gen-AI experiences. You will bridge the gap between high-scale infrastructure and user experience, unifying retrieval, ranking, and personalization into a cohesive, high-performance system. You will integrate LLM-powered capabilities, solve complex scale problems, and drive cross-functional impact while mentoring the team.

$231k - $318k