Remote New

Principal Machine Learning Engineer

Harman
life insurance, sick time, long term disability, tuition reimbursement, remote work
United States, Texas
Aug 04, 2025
Description & Requirements About the Role Roon is a music library management, audio streaming, and discovery platform that helps music lovers find their next favorite song, album, or artist, delve deeper into the music, and play it back wherever they like, on ear buds, or on the highest-end HiFi. We're seeking a Principal Machine Learning Engineer who shares that passion for music and wants to build recommendation systems that truly understand how people discover and fall in love with music. You'll join our rapidly growing data team and play a key role in enhancing and expanding Roon's recommendation systems. You'll work with a high degree of autonomy and ownership, making critical development decisions to ensure long-term success. You'll collaborate closely with product stakeholders, app developers, and engineers in a fast-paced, iterative environment What You Will Do Take ownership of Roon's existing recommendation models and algorithms. Develop new, and iterate on existing, machine learning solutions for personalized music discovery, including collaborative filtering and content-based recommendations. Serve as a technical authority, making architectural decisions about recommendation systems. Work with our product team to build ML solutions that anticipate users' tastes and create those "perfect recommendation" moments. Collaborate closely with app developers and product management to measure recommendation performance and iterate based on user feedback. Test new ways of understanding musical taste, measuring success by how often users discover something they love. What You Need to Be Successful 10+ years of machine learning including software engineering experience with proven track record building, delivering, measuring, and improving recommendation systems for use in production environments. Experience with collaborative filtering and other machine learning techniques for personalized recommendation systems. Python ML expertise - Strong Python skills including NumPy, SciPy, Jupyter notebooks, and ML frameworks for model development, experimentation, and feature engineering. Strong SQL skills - Experience with complex queries, data analysis, and working with large datasets in SQL environments. Generative AI - Familiarity with Generative AI technologies. C# familiarity - Understanding of C#/.NET for system integration and collaboration with engineering teams (highly desirable but not critical). Bonus Points if You Have Bachelor's degree in Computer Science, Engineering, Mathematics, or related STEM field. A passion for music with understanding of current consumption patterns and discovery challenges, plus motivation to create better music experiences. Experience with Mac or Linux development environments. Experience with BigQuery. Experience designing or collaborating on data-driven product design. Experience working on user-facing software products. What Makes You Eligible Be willing to travel up to 5%, domestically and internationally. Be willing to work Virtual or Remote in any US time zone, with East Coast hours expected for overlap with European colleagues. Successfully complete a background investigation and drug screen as a condition of employment. What We Offer Flexible work environment, allowing for full-time remote work globally for positions that can be performed outside a HARMAN or customer location Access to employee discounts on world-class Harman and Samsung products (JBL, HARMAN Kardon, AKG, etc.) Extensive training opportunities through our own HARMAN University Competitive wellness benefits Tuition reimbursement "Be Brilliant" employee recognition and rewards program An inclusive and diverse work environment that fosters and encourages professional and personal development Pay Transparency $ 120,750 - $ 177,100 Dependent on the position offered, other forms of compensation are also available, such as bonuses or commission. Pay is based on a wide range of factors, including, without limitation, skill set, experience, training, location, and business need. While the above range is a reasonable estimate of the wage range for this position, please note the disclosed range estimate has not been adjusted for the applicable geographical differential associated with the location where the position may be filled. Benefits HARMAN is interested in the health and wellbeing of you and your family and offers a range of benefits designed to support your needs for holistic wellbeing. Benefits and perks may vary depending on the nature of your employment with HARMAN, and may include paid vacation and holidays, paid sick leave, volunteer leave, and paid bonding and care giver leave. Employees may also be eligible to participate in comprehensive medical, dental, and vision plans, fertility support and adoption assistance, Health Savings and Flexible Spending Accounts, retirement savings plan with employer match, short and long term disability coverage, life insurance, and more. You Belong Here HARMAN is committed to making every employee feel welcomed, valued, and empowered. No matter what role you play, we encourage you to share your ideas, voice your distinct perspective, and bring your whole self with you - all within a support-minded culture that celebrates what makes each of us unique. We also recognize that learning is a lifelong pursuit and want you to flourish. We proudly offer added opportunities for training, development, and continuing education, further empowering you to live the career you want. About HARMAN: Where Innovation Unleashes Next-Level Technology Ever since the 1920s, we've been amplifying the sense of sound. Today, that legacy endures, with integrated technology platforms that make the world smarter, safer, and more connected. Across automotive, lifestyle, and digital transformation solutions, we create innovative technologies that turn ordinary moments into extraordinary experiences. Our renowned automotive and lifestyle solutions can be found everywhere, from the music we play in our cars and homes to venues that feature today's most sought-after performers, while our digital transformation solutions serve humanity by addressing the world's ever-evolving needs and demands. Marketing our award-winning portfolio under 16 iconic brands, such as JBL, Mark Levinson, and Revel, we set ourselves apart by exceeding the highest engineering and design standards for our customers, our partners and each other. If you're ready to innovate and do work that makes a lasting impact, join our talent community today! Important Notice: Recruitment Scams Please be aware that HARMAN recruiters will always communicate with you from an '@harman.com' email address. We will never ask for payments, banking, credit card, personal financial information or access to your LinkedIn/email account during the screening, interview, or recruitment process. If you are asked for such information or receive communication from an email address not ending in '@harman.com' about a job with HARMAN, please cease communication immediately and report the incident to us through: harmancareers@harman.com. HARMAN is proud to be an Equal Opportunity employer. HARMAN strives to hire the best qualified candidates and is committed to building a workforce representative of the diverse marketplaces and communities of our global colleagues and customers. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.HARMAN attracts, hires, and develops employees based on merit, qualifications and job-related performance.(www.harman.com) Apply