pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement. We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with stakeholders to set technical direction, remove bottlenecks, and ship production-grade code. Engagement Details: - Type: Full-time independent contractor - Hours: Full-time commitment expected - Location: Remote (US, Canada, UK, Ireland or Netherlands) - Clients: US and Europe - Rate: Competitive, based on experience What You'll Own - End-to-end technical ownership of a high-revenue web platform and mobile app - Architecture design and long-term technical strategy - Server-side rendering pipeline using Node.js, Fastify 5, and React 19 - Data layer across MySQL and BigQuery - GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer - Ad-tech integrations including Google Ad Manager, GTM, GTag, and GPT.js - Performance optimization at scale, where every millisecond counts - ML pipeline maintenance and optimization for ad-tech performance

pubGENIUS is a React.js and Next.js development agency and ad-tech startup. We build websites and apps for clients across the US and Europe, specializing in decentralized finance (DeFi, crypto, NFT, blockchain), fintech, and healthcare, with occasional work in e-commerce and other verticals. Beyond client work, we operate our own high-revenue web product with a website, mobile app, and machine learning systems powering our ad-tech optimization engine. Performance is not a preference here, it is a core requirement. We are looking for a Principal Software Engineer, who will be the technical authority, responsible for all development, architecture decisions, and long-term technical strategy across a website, mobile app, and ML-powered ad-tech optimization systems. This is a full-time independent contractor engagement. You will work hands-on at a senior level where site speed and server performance are core success metrics. You will work directly with stakeholders to set technical direction, remove bottlenecks, and ship production-grade code. Engagement Details: - Type: Full-time independent contractor - Hours: Full-time commitment expected - Location: Remote (US, Canada, UK, Ireland or Netherlands) - Clients: US and Europe - Rate: Competitive, based on experience What You'll Own - End-to-end technical ownership of a high-revenue web platform and mobile app - Architecture design and long-term technical strategy - Server-side rendering pipeline using Node.js, Fastify 5, and React 19 - Data layer across MySQL and BigQuery - GCP infrastructure including Cloud Run, Cloud Build, and Global Load Balancer - Ad-tech integrations including Google Ad Manager, GTM, GTag, and GPT.js - Performance optimization at scale, where every millisecond counts - ML pipeline maintenance and optimization for ad-tech performance

• Own the Client Experience: Serve as the primary point of contact for a portfolio of client accounts, building strong, trusted relationships and ensuring clients feel supported, informed, and valued throughout every engagement. • Lead Client Engagements: Guide clients through compliance initiatives end-to-end — from kickoff through certification — providing clear communication, proactive updates, and expert guidance at every milestone. • Handle Escalations with Professionalism: Resolve complex client issues and requests with urgency, composure, and a solution-oriented approach that reinforces confidence and long-term retention. • Be a Trusted Advisor: Understand each client's unique business context and deliver compliance guidance that is practical, actionable, and tailored to their needs. • Collaborate Cross-Functionally: Partner with internal teams and client stakeholders to embed security and compliance best practices and resolve issues quickly. • Manage and Develop a Pod of Analysts: Lead a team of 3–5 analysts through coaching, mentorship, and performance management, fostering accountability, quality, and professional growth. • Drive Consistent Delivery: Ensure the team meets deadlines and delivers high-quality work across all active client engagements, stepping in to support where needed. • Develop and Maintain Compliance Frameworks: Create, update, and align compliance policies, procedures, and technical controls with SOC 2 (Type 1 & 2), ISO 27001, HIPAA, and PCI DSS standards. • Lead Compliance Certifications: Oversee and execute SOC 2 and ISO 27001 implementation and certification projects across multi-cloud environments (AWS, GCP, Azure). • Conduct Risk and Security Audits: Perform regular risk assessments and audits to identify vulnerabilities and enhance overall security posture. • Monitor Regulatory Developments: Stay informed on evolving regulations and frameworks to maintain the relevance and accuracy of compliance controls. • Leverage Compliance Automation Tools: Utilize platforms such as Drata, Vanta, and SecureFrame to track compliance metrics and ensure continuous audit readiness.

Mapbox is the leading real-time location platform for a new generation of location-aware businesses. Mapbox is the only platform that equips organizations with the full set of tools to power the navigation of people, packages, and vehicles everywhere. More than 4 million registered developers have chosen Mapbox because of the platform’s flexibility, security and privacy compliance. Organizations use Mapbox applications, data, SDKs and APIs to create customized and immersive experiences that delight their customers. What We Do The Navigation Native team builds the high-performance C++ engine that serves as the "brain" of our Navigation SDKs. This library runs directly on end-user systems (on-board), powering everything from mobile apps to in-vehicle infotainment systems for partners like BMW, Porsche, and Zeekr. We solve the fundamental challenges of movement: transforming noisy GPS/IMU data into precise map-matching, managing complex road-network graphs, supporting routes and alternatives, tracking progress along a route, and providing "Electronic Horizon" capabilities for ADAS. Our work happens at the edge, supporting location frequencies up to 10Hz and ensuring a seamless experience even in tunnels or dense urban canyons. As AI becomes embedded in modern engineering workflows, we value engineers who can thoughtfully integrate AI into design, development, and decision-making. Our interview process will include discussion of how you use AI in your engineering workflow. What You'll Do We are looking for smart, fast-learning engineers driven by the challenge of developing core components of the Mapbox navigation ecosystem. As a C++ Developer, you will: - Build and maintain a unified C++17 library that runs seamlessly across iOS, Android, and low-power automotive embedded hardware. - Analyze and improve map-matching and dead-reckoning algorithms using real-world data from millions of vehicles. - Implement route-following features, including high-frequency route progress reporting, deviation detection, and timely instruction delivery. - Work on road object matching (OpenLR) and live traffic incidents to give drivers a predictive "window" into the road ahead. - Design predictive caching for routing tiles and manage complex on-board resources like junction views and signposts. - Integrate and extend the Valhalla routing engine to support offline routing and route refresh controllers. - Thoughtfully leverage AI tools in your design and development workflow to increase efficiency and code quality. What We Believe are Important Traits for This Role - Strong proficiency in C++17 (or later) with a deep understanding of the language specification, memory management, standard library, and multi-threading. - A passion for writing clean, fast, and portable code that adheres to strict CPU and memory constraints. - Experience working with complex graph-based structures, data structures, and spatial algorithms. - Proven experience developing cross-platform code (Linux, mobile, or embedded systems). - Strong English skills, with the ability to explain complex technical trade-offs to both peers and stakeholders. Would be a Plus - Familiarity with navigation concepts (dead reckoning, bearing, Electronic Horizon, or OpenLR). - Experience working with IMU, OBD-II, or GNSS data. - Background in computational geometry or safety-critical features (ADAS). - Experience with or contribution to open source routing engines. What We Value In addition to our core values, which are not unique to this position and are necessary for Mapbox leaders: - We value high-performing creative individuals who dig into problems and opportunities. - We believe in individuals being their whole selves at work. We commit to this through supportive health care, parental leave, flexibility for the things that come up in life, and innovating on how we think about supporting our people. - We emphasize an environment of teaching and learning to equip employees with the tools needed to be successful in their function and the company. - We strongly believe in the value of growing a diverse team and encourage people of all backgrounds, genders, ethnicities, abilities, and sexual orientations to apply. By applying for this position, you acknowledge that you have received the Mapbox Non-US Privacy Notice for applicants, which is linked here. Completing this application requires you to provide personal data, such as your name and contact information, which is mandatory for Mapbox to process your application. We are committed to a fair and equitable hiring process. We do not discriminate against any protected class. #LI-Remote