Senior Software Engineer - Wallet Core
The Senior Software Engineer will join the Wallet Core Team to build an API-first platform for businesses and developers launching crypto products. Key responsibilities include designing and building scalable APIs, owning functionality from inception to deployment, and collaborating cross-functionally. The role requires strong experience in back-end development with specific languages and architectures, and involves mentoring peers through code reviews.
Senior Software Engineer - Wallet Core
BitGo is seeking a Senior Software Engineer to join the Wallet Core Team in New York City to build an API-first platform for crypto products. Key responsibilities include designing and building robust APIs, libraries, and services, owning functionality from inception to deployment, and collaborating cross-functionally. The role requires strong experience in backend development, expertise with TypeScript/Node.js/PostgreSQL/MongoDB, and strong skills in algorithm design and RESTful API design.
Senior Software Engineer - Wallet Core
The Senior Software Engineer will join the Wallet Core Team to build an API-first platform for crypto products, focusing on designing and building scalable APIs, libraries, and services. Key responsibilities include owning functionality from inception to deployment, collaborating cross-functionally, and ensuring application performance and quality. The role requires strong experience in back-end development, algorithm design, and modern web technologies like TypeScript and Node.js.
Senior Software Engineer (Node.js/TypeScript)
The Senior Software Engineer will be responsible for designing, building, and operating reliable and scalable software solutions using Typescript and Node.js within a cross-functional squad. Key responsibilities include owning services from design to operation, meeting SLAs, providing technical mentorship, and working collaboratively with product and operations teams. This is a flexible, remote-first role based in the UK, requiring some on-call duties and occasional travel to team days.
Senior Engineering Manager - Tax Wrappers
The Senior Engineering Manager - Tax Wrappers will lead engineering delivery for critical products like SIPPs and ISAs, managing and scaling engineering squads. Key responsibilities include coaching engineers, hiring/building a new squad, partnering with Product, and shaping the technical direction and strategy for the Tax Wrappers domain. This role requires working closely with Product, Compliance, and leadership to ensure scalable, compliant, and market-leading functionality.
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Senior Software Engineer, Marketing Enablement & Technology (Full-Stack)
The Senior Software Engineer will join the Marketing Enablement & Technology (MET) team to build execution-layer tooling on top of Instacart's CRM platforms, focusing on end-to-end email workflow development. Key responsibilities include developing production emails using a React component library, architecting scalable full-stack solutions (React/Next.js/Ruby), and partnering with marketing stakeholders to drive the platform roadmap. This role requires deep expertise in modern web technologies and backend services to enable marketers to launch campaigns efficiently at scale.
Full-Stack Developer - Node/react - Argentina Only
This role is for a Senior Software Engineer (Fullstack) to join a remote-first team building an AI-native Digital Experience Platform. Key responsibilities include designing and implementing scalable backend services using technologies like Node.js and TypeScript, leading architectural direction, and mentoring junior engineers. Candidates must have 7+ years of experience and business-level fluency in English, working within an agile, high-craftsmanship environment.
Senior Software Engineer, Enterprise Platform
The Senior Software Engineer, Enterprise Platform will join a new team focused on building and operating reliable, scalable, and resilient distributed systems, particularly for Vanta's FedRAMP deployment. Key responsibilities include designing and maintaining the vulnerability management platform, evolving the production reliability framework (SLOs, incident response), and engineering reliability improvements for CI/CD workflows. Success requires experience operating services under strict compliance (like FedRAMP) and driving large-scale reliability initiatives across engineering.
Senior Data Scientist / AI Consultant Mercer
The role involves partnering with Mercer teams to transform data into actionable insights and deliver production-ready, LLM-powered solutions to advance the company's AI strategy. Key responsibilities include building and refining LLM-based classification workflows, developing AI agents using frameworks like LangChain, and integrating these lightweight solutions into internal applications via APIs or microservices. The candidate must have strong Python engineering skills and hands-on experience developing end-to-end LLM applications in fast-moving, exploratory environments.
Senior Software Engineer, Full-Stack
The Senior Software Engineer (Fullstack) will design and implement scalable backend services and APIs using technologies like Node.js and TypeScript, contributing significantly to both backend and frontend components. Responsibilities include leading projects, authoring design documents, and mentoring junior engineers within an AI-native Digital Experience Platform team. Candidates must have 7+ years of experience and business-level English fluency.
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Senior Backend Engineer
The Senior Backend Engineer will join a verticalized development team to develop and deliver software solutions, enhance existing products for performance, and ensure operational excellence through monitoring and testing. Key responsibilities include writing high-quality, well-structured code, mentoring junior developers, and proactively identifying system improvements. Candidates must have 5+ years of backend development experience, proficiency in Node.js/TypeScript, and comfort with containerized microservices and Linux environments.
Senior Software Engineer - Access & Notifications
The Senior Software Engineer will join the Access & Notifications team to build an API-first platform for businesses and developers launching crypto products. Key responsibilities include designing and building scalable, robust APIs, libraries, and services, taking ownership of features from inception to deployment, and writing clean, maintainable code. The role requires deep collaboration with cross-functional teams and providing mentorship to peers.
Sr Software Engineer - Backend Engineer Ind
Five9 is seeking a highly skilled Senior Full-Stack Developer with expertise in .NET Core to join their engineering team in Bangalore. Key responsibilities include designing, developing, and maintaining scalable microservices and APIs using .NET Core and optimizing database queries. The role requires working closely with cross-functional teams in an Agile/Scrum environment to build robust, high-performance cloud-native services.
Senior Backend Engineer for Proxy And Unblocking
The Senior Backend Engineer will focus on developing proxy infrastructure and unblocking capabilities to keep Apify's scraping infrastructure ahead of evolving anti-bot systems. Key responsibilities include expanding Apify Proxy, researching anti-scraping services, and building internal tools using browser fingerprinting and human-like interaction. The role involves working in a cross-functional team and contributing to open-source proxy libraries.
Senior Software Engineer, Analytics
The Senior Software Engineer will be responsible for executing the ambitious analytics product roadmap by designing and implementing resilient technical solutions that handle high volumes of data. This role requires deep involvement in the end-to-end data lifecycle, from schema design to building features that surface meaningful insights. Engineers are expected to be active participants in improving development practices and championing high-quality code through reviews and feedback.
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Senior Software Engineer I (Full-Stack)
The company is seeking a Senior Software Engineer 1 (Full Stack) for their Demand Side Platform (DSP) team, which processes over 1.5 billion ad requests daily. Key responsibilities involve building intelligent, scalable web applications and services across the full stack, including designing user interfaces, robust backend services, RESTful APIs, and managing database integrations. The role requires working on high-scale, real-time decisioning engines for digital advertising platforms.
Senior Backend Developer, Data Team
The Senior Backend Developer will join the Data Team to design and deliver infrastructure for CapIntel's platform, focusing on speed and reliability. Key responsibilities include building robust ETL pipelines, architecting data storage solutions for financial data, and leading the development of secure API integrations. The role involves deploying and optimizing services on AWS while mentoring intermediate developers and driving technical excellence.
Full-Stack Engineer (m/f/d) - Wien
The company is seeking a Senior Full Stack Engineer to join a small, highly motivated development team working on a wellness industry platform. Key responsibilities include actively shaping the architecture of web applications, taking end-to-end responsibility for complex features, and scaling the existing serverless infrastructure on GCP. The role requires at least 5 years of professional development experience, deep knowledge of TypeScript, React, and Node.js, and strong German language skills (C1 minimum).
Senior Full-Stack Developer
The Senior Fullstack Developer will architect and develop high-performance frontend applications using Node.js and TypeScript, focusing on serverless functions and hybrid rendering strategies. Key responsibilities include building and maintaining GraphQL and RESTful APIs, handling complex authentication flows, and integrating deeply with third-party services. The role requires extensive experience across both frontend and backend development to optimize performance and contribute to platform architecture discussions.
Site Builder Company (yc S13) - Sr Full-Stack Developer
The role is for a Senior Fullstack Developer at a remote-first company building an AI-native Digital Experience Platform. Responsibilities include designing and implementing scalable multi-tenant backend services and APIs using technologies like Node.js, TypeScript, and AWS infrastructure. The engineer will also be expected to lead projects, produce high-quality, maintainable code, and mentor junior engineers.