Role Description At Jona, we’re transforming how clinicians and consumers understand and optimize their gut microbiome. Our AI-powered platform decodes complex microbiome data and translates it into actionable insights—supporting better outcomes, stronger immunity, and longer health spans. We’re looking for a player-coach, hands-on Head of Engineering to help us scale our core product. You’ll lead a small, high-performing team while staying close to the code—shipping features, shaping architecture, and bringing AI-powered capabilities into production. This is a high-impact role: you’ll influence product direction, define how we build, and help turn ideas into real, user-facing systems fast. - Experience going from 0 to 1: Own projects end-to-end, from ideation to delivery - Architect systems: Design scalable backends, frontends, and AI-powered applications - Build AI into the product: Integrate and operationalize ML models into various aspects of our product stack - Establish MLOps foundations: Drive infrastructure for Model training, deployment and monitoring - Collaborate tightly: Work directly with product, design, and data to move fast - Raise the bar: Improve code quality, CI/CD, developer experience, and reliability - Manage and mentor: Build, support, unblock, and grow a small team of engineers - Culture: Nurture a high-performance and agile engineering culture Qualifications - 10+ years of software development experience - 3+ years of building and shipping modern AI-enabled web applications or platforms in production - Experience leading small engineering teams and mentoring engineers while remaining highly hands-on - Strong full-stack skills (TypeScript, React, Node.js) - Experience designing scalable APIs and working with production databases, especially PostgreSQL and other SQL systems - Experience with Docker/containers - Experience with Terraform or other infrastructure-as-code experience - Solid experience with AWS and owning cloud/platform maturity - 3+ years of experience deploying and operating ML/AI systems in production - Strong familiarity with MLOps practices, including model lifecycle management, monitoring, deployment, and data/model pipelines - Comfortable owning ambiguous problems and moving quickly - Strong product instincts—you care about what gets built, not just how - Exposure to regulated environments (e.g., healthcare/HIPAA) Requirements - Experience in health-tech and can communicate well with science/clinical stakeholders - Experience in healthcare or a regulated data background is preferred - Experience interviewing and helping hire strong engineers is preferred; experience building a small team is a plus - Experience with Kubernetes - Familiarity with NoSQL/vector/search stores is a plus Benefits - Medical, Dental & Vision: Competitive medical, dental, vision insurance for employees and dependents. This includes medical, dental, and vision premiums as well as a company contributed HSA/FSA. - Retirement Matching: Jona has a 401k plan that offers company matching for dollars you contribute. - Vacation Policy: Jona’s vacation policy is to take vacation. We operate on a Freedom and Responsibility model of unlimited PTO. - Equity: We offer meaningful equity ownership, allowing team members to share directly in the long-term success of Jona. Compensation & Benefits - Salary range: $225-270K - Equity

• Define and execute the engineering strategy across frontend, backend, data, and infrastructure • Hire, develop, and retain exceptional engineers and engineering managers • Collaborate closely with the CPO and Product team to translate roadmap priorities into reliable, scalable delivery • Own the technical architecture of a multi-tenant SaaS platform handling large-scale research data pipelines • Ensure the platform meets enterprise-grade SLA, security, and data privacy requirements • Manage the engineering budget, headcount planning, and vendor relationships

Role Description Extended Stay America (ESA) is seeking a highly analytical Customer Data & CRM Marketing Manager to oversee our customer data platform (CDP) and lifecycle marketing programs across eMail, SMS, and Push. This role is ideal for someone who thrives at the intersection of customer data, marketing technology, segmentation strategy, and performance analytics. This position is responsible for managing and optimizing a large-scale CDP containing millions of customer profiles and transforming that data into actionable marketing strategies. The ideal candidate has hands-on experience working with large, complex datasets, customer segmentation, data governance, audience architecture, and marketing automation platforms. - Guide systems integrations, maintain daily operations, conduct deep data analyses, and recommend omni-channel customer journey campaigns to improve guest acquisition and retention. - Work to acquire, nurture, and retain email and mobile messaging subscribers. - Report directly to the Senior Director of Marketing and work closely with leaders in the Marketing and eCommerce department and across the company. Qualifications - Strong experience working with large-scale customer databases and CDPs containing high-volume customer records. - Proven ability to build and manage complex audience segmentation strategies using behavioral and transactional data. - Strong analytical mindset with experience interpreting customer data, campaign metrics, and performance trends. - Experience managing lifecycle marketing channels including email, SMS, and push messaging, with experience collaborating with Creative teams. - Hands-on experience with CRM/CDP and marketing automation platforms. - Comfortable working cross-functionally with technical, analytics, and engineering teams. - Advanced proficiency in Excel and familiarity with SQL, BI tools, or data visualization platforms strongly preferred. - Experience in hospitality, travel, loyalty, or multi-location consumer brands is a plus. - Strong attention to detail, data accuracy, and operational execution. - Ability to manage a diverse range of projects simultaneously. - Excellent written and verbal communication skills. - Strong business acumen. - Strong collaborator and great at building strong working relationships. - Able to work independently and solve problems with minimum supervision. - Bachelor's degree from an accredited 4-year university. Requirements - 5+ years of experience in CRM, customer data, lifecycle marketing, marketing analytics, or marketing technology roles. Benefits - Fully remote role. Environmental Job Requirements - Located in a comfortable indoor area. Any unpleasant conditions would be infrequent and not objectionable. - Less than 10% travel.

• Lead, mentor, and manage a remote team of software engineers, fostering a culture of accountability, collaboration, and continuous improvement. • Provide mentorship and guidance to team members. • Recruit, onboard, and develop engineering talent. • Facilitate all scrum ceremonies, including sprint planning, daily standups, backlog grooming, sprint reviews, and retrospectives. • Own end-to-end delivery of engineering commitments. • Collaborate with product management to refine requirements and ensure roadmap alignment. • Maintain sufficient technical fluency to support technical decision-making and participate meaningfully in architecture discussions and code reviews.