Careers at Nexxen

Who is Nexxen? Flexible advertising, unified by data. Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them. Our flexible and unified technology stack comprises a demand-side platform (“DSP”) and supply-side platform (“SSP”), with the Nexxen Data Platform at its core. With a global footprint, you can be part of a team that is transforming advertising through our creative, flexible, and unified solutions. Why join the Nexxen team? With a global footprint, you can be part of a team that is transforming advertising through our creative, flexible, and unified solutions. Employees hustle, commit and dedicate themselves to pillars that make up the Nexxen Way – the 3Cs - Customer Centric, Curious Mindset, Collaborative with No Ego. The Role The Sr. Machine Learning Engineer will join our Nexxen DSP Software Development group. In this hands-on role, you will work in close collaboration with data scientists to build the next generation of applied data science infrastructure for real-time performance optimization and machine learning solutions. The right person for this role should be experienced in crafting implementation for either machine learning technologies or data-driven algorithms. If you are someone who is proactive and innovative in these domains, this is a phenomenal role for you! What you will do Develop critical high-performance, large-scale services for Nexxen DSP Programmatic integrations and Platform product Drive ground-breaking innovation and apply state of the art AI and machine learning in a variety of areas to enhance real-time ad scoring and ranking system for bid optimization Develop scalable and efficient approaches for large scale data analysis and model development Build and experiment new algorithms and models end-to-end, from production rollout to continuous optimization Collaborate with data scientists, engineering teams, product managers, and program managers in an open and creative environment Help troubleshoot production and customer issues Follow agile methodologies and work in a fast-paced environment where one can quickly see the results of the work being performed What you will bring Bachelor in Computer science or related field of study 5+ years of engineering experience working at leading technology companies. A history of successfully taking ownership of features/functionality and delivering end-to-end project Strong knowledge of and experience implementing AI/ML technologies (Neural Network, ONNX), mathematics, and statistics Expertise in Java, Python, and Scala In-depth knowledge of data structures and algorithms Experience building applications on top of large-scale ML/DL frameworks (TensorFlow, PyTorch) Expertise working with data processing tech stack (Spark, MapReduce) Expertise in building data-driven services and applications (ETL) Experienced with interdisciplinary collaborations with Data Science, Product, and Business stakeholders A proven track record of thriving in a fast-paced, data-driven, and collaborative work environment is required Strong communication skills with the ability to communicate complex concepts to non-technical stakeholders Desired Qualifications MS or PhD in computer science or equivalent experience. Experience within AdTech industry. Experience in LLM and GenAI. At Nexxen, we value our differences, varied experiences, and collective contribution. We know that not everyone takes the same career path, so if you don’t match this job description perfectly, don’t worry! We would rather see your application than risk missing out on your potential to make an impact. In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $180,000 - $220,00 at the time of posting, with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, unlimited vacation, and company-paid holidays. The specific programs and options available will vary depending on the state, start date, and employment type. Our Talent Acquisition team will be happy to answer any questions you may have. For information about how we handle your personal information please view our Applicant and Candidate Privacy Notice Important Notice from Nexxen: Your Safety Matters At Nexxen, we care about the well-being of our current and future employees. We are aware of the growing number of online scams and fraudulent job postings, and we urge all job seekers to remain vigilant. Please be advised that Nexxen will never request payment (whether in cash, cryptocurrency, or any other form) as a condition of employment, offer positions that require you to invest in vague or dubious financial schemes, or promote roles that resemble get-rich-quick opportunities. If you receive a suspicious message claiming to be from Nexxen or encounter a questionable job posting associated with our name, please contact us at infosec@nexxen.com to verify its legitimacy. Your trust is important to us. Stay safe and informed. Nexxen Fraud Alert and Notice: Protect Yourself from Impersonation and Fraudulent Activity

What You'll Do We’re looking for a self-directed, analytical, and curious Data Scientist II with 2+ years of hands-on experience to join our team working on the core optimization and bidding logic of the Nexxen Demand-Side Platform (DSP). You will work on problems at the intersection of machine learning, large-scale data processing, and ad delivery performance and your work will directly impact how we bid, win, and optimize impressions across real-time programmatic advertising exchanges. This role will be based in the New York City office. Our team follows a hybrid schedule working in-office three days a week and remotely for the rest. Each day can be different here at Nexxen, but some of the things you can expect to be doing daily are: Job Description Design, implement, evaluate and help deploy machine learning models for bidding, pacing, KPI prediction (Click, Action, Viewability etc.) and Forecasting. Analyze large-scale behavioral and performance data using Spark (Scala/PySpark), SQL, and Python. Deep dive into complex, legacy codebases; you should be comfortable navigating and improving existing systems. Collaborate with product managers, engineers, and other data scientists to define problems and deliver end-to-end solutions. Write clear, concise technical documentation and communicate insights effectively across both technical and non-technical stakeholders. What Will I Bring? Master’s in a quantitative field such as Data Science, Operations Research, Computer Science, Mathematics, Statistics, Industrial Engineering, Mechanical Engineering, Physics, or related field 3+ years of experience in a data science or applied machine learning role, ideally in a high-scale, real-time environment. Proficient with applied machine learning techniques (classification, regression, evaluation metrics, etc.), especially tree-based models like XGBoost. Comfortable navigating large, complex legacy codebases and proposing changes to production systems. Bonus: comfortable using LLM-based tools (e.g., Copilot, ChatGPT) to accelerate development, debugging, and documentation. Strong programming skills in Python, and SQL. Experience with Scala/Apache Spark for distributed data processing and machine learning at scale. Strong written and verbal communication skills — able to synthesize technical findings into clear, actionable insights. Self-directed, curious, and able to thrive in a fast-paced and evolving industry. In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $160,000 - $200,000 the time of posting, with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits, including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, unlimited vacation, and company-paid holidays. The specific programs and options available will vary depending on the state, start date, and employment type. Our Talent Acquisition team will be happy to answer any questions you may have. #LI-DN1 #LI-Hybrid For information about how we handle your personal information please view our Applicant and Candidate Privacy Notice Important Notice from Nexxen: Your Safety Matters At Nexxen, we care about the well-being of our current and future employees. We are aware of the growing number of online scams and fraudulent job postings, and we urge all job seekers to remain vigilant. Please be advised that Nexxen will never request payment (whether in cash, cryptocurrency, or any other form) as a condition of employment, offer positions that require you to invest in vague or dubious financial schemes, or promote roles that resemble get-rich-quick opportunities. If you receive a suspicious message claiming to be from Nexxen or encounter a questionable job posting associated with our name, please contact us at infosec@nexxen.com to verify its legitimacy. Your trust is important to us. Stay safe and informed. Nexxen Fraud Alert and Notice: Protect Yourself from Impersonation and Fraudulent Activity

What You'll Do: Every ad request that hits our exchange runs through a real-time auction: a bidder decides, in milliseconds, whether to ask our demand partners to bid. Much of the traffic doesn’t get bid on, wasting load on both sides. Your job is to make the system smarter about what to send where. That means you'll work across the whole stack of a live, high-throughput ad exchange: the Node.js bidder making the real-time decisions, the data pipeline that captures what happened, the SQL that turns billions of events into answers, and the machine-learning models that predict which traffic is worth sending. Few engineering roles let one person see a problem from the hot path to the model and back. This one does. We're hiring for curiosity, not a checklist. You will not have done all of this before. We care that you learn fast, reason from first principles, and want to understand why a system behaves the way it does. This role expects AI fluency. Directing AI tools well is core to how we work here. A lot of what we build, from data exploration to model code, is done by steering AI and rigorously checking its output. If that's already how you operate, you'll fit right in. If it's not, this isn't the role for you. This role will be based in the Bellevue, WA office. Our team follows a hybrid schedule working in-office three days a week and remotely for the rest. This is an exempt position. Each day can be different here at Nexxen, but some of the things you can expect to be doing daily are: The real-time bidder (Node.js) that decides which requests to forward to demand partners, and the throttling layer that acts on those decisions with near-zero latency. The job that aggregates traffic performance and produces the throttle layer — the bridge between our analytics and the live bidder. Data at scale: SQL over billions of bid requests and impressions to feed our research Applied machine learning: gradient-boosted models with interpretability to rank which request features predict a bid, then turning those findings into real-time rules the bidder can use. What You'll Bring Are a strong generalist, comfortable being dropped into an unfamiliar system and figuring it out. Can write and reason about production code, with careful attention to performance and correctness. Have expertise in at least one backend programming language and distributed systems. Are fluent in SQL, or eager to become fluent, and like working with large datasets. Ask "why is this like this?" and keep pulling the thread until it makes sense. Have experience with AdTech / RTB, real-time or low-latency systems, columnar databases, A/B testing, or ML tooling. Not all of these are required, but one or two would give you a great head start. Can work fluently with AI coding tools. Use AI assistants (Claude Code, Copilot, ChatGPT, or similar) as a serious part of how you build — not to paste answers, but to direct the work, review what comes back critically, and move faster across unfamiliar territory than you could alone. In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $175,000 - $200,000 the time of posting, with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits, including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, unlimited vacation, and company-paid holidays. The specific programs and options available will vary depending on the state, start date, and employment type. Our Talent Acquisition team will be happy to answer any questions you may have. #LI-DN1 #LI-Hybrid For information about how we handle your personal information please view our Applicant and Candidate Privacy Notice Important Notice from Nexxen: Your Safety Matters At Nexxen, we care about the well-being of our current and future employees. We are aware of the growing number of online scams and fraudulent job postings, and we urge all job seekers to remain vigilant. Please be advised that Nexxen will never request payment (whether in cash, cryptocurrency, or any other form) as a condition of employment, offer positions that require you to invest in vague or dubious financial schemes, or promote roles that resemble get-rich-quick opportunities. If you receive a suspicious message claiming to be from Nexxen or encounter a questionable job posting associated with our name, please contact us at infosec@nexxen.com to verify its legitimacy. Your trust is important to us. Stay safe and informed. Nexxen Fraud Alert and Notice: Protect Yourself from Impersonation and Fraudulent Activity

What You'll Do: Nexxen's SSP Software Development team is building and running a high-throughput SSP that processes hundreds of billions of real-time ad requests a day. You'll own complex, ambiguous problems end-to-end, apply an AI-first mindset to solve hard AdTech problems, and raise the bar for the team through code review and mentorship — with performance, scalability, and operational excellence guiding every project. This role will be based in the Bellevue, WA office. Our team follows a hybrid schedule working in-office three days a week and remotely for the rest. This is an exempt position. Each day can be different here at Nexxen, but some of the things you can expect to be doing daily are: • Own complex initiatives end-to-end: design, implementation, integration, rollout, and operation • Apply an AI-first mindset to software development and data exploration • Integrate with DSPs, SSPs, third-party data providers, and standards such as OpenRTB and VAST • Build high-throughput, low-latency services with efficient caching and in-memory stores (Redis, Kafka, Aerospike) • Apply an SRE mindset: observability, incident response, capacity planning, and a shared on-call pager rotation • Raise the technical bar through code review, mentorship, and process/tooling decisions • Identify and resolve performance bottlenecks in systems processing billions of transactions/day • Drive test, monitoring, and automation coverage, including load and acceptance testing • Partner with product, ops, and engineering teams to shape roadmap and architecture What you'll bring: • BS/MS (preferred) in Computer Science,Engineering, or related field • 5+ years of expert-level JavaScript/Node backend experience at scale • Strong grounding in distributed systems: scaling, fault tolerance, caching, load balancing • Solid fundamentals in data structures, algorithms, and systems design • Hands-on with distributed databases (Aerospike, Redis) and streaming pipelines (Kafka, Kinesis) • Strong SQL/RDBMS, Linux, networking, and Git skills • Track record of code review and mentorship that raises the bar for other engineers • Test-first mindset with automated acceptance and load testing • Excellent communicator and strong team player • AdTech industry experience strongly preferred In support of pay transparency and equity, the minimum and maximum full-time annual base salary for this role is $180,000 - $200,000 the time of posting, with the potential of an incentive or bonus. While this is our reasonable expectation this is not a guarantee of compensation or salary, actual compensation is influenced by a wide range of factors including but not limited to skill set, level of experience, education, certifications, responsibility, and geographic location. Candidates hired to work in other locations will be subject to the pay range associated with that location. We offer a variety of benefits, including medical, dental, vision, disability insurance, 401(k), EAP, parental leave, unlimited vacation, and company-paid holidays. The specific programs and options available will vary depending on the state, start date, and employment type. Our Talent Acquisition team will be happy to answer any questions you may have. #LI-DN1 #LI-Hybrid For information about how we handle your personal information please view our Applicant and Candidate Privacy Notice Important Notice from Nexxen: Your Safety Matters At Nexxen, we care about the well-being of our current and future employees. We are aware of the growing number of online scams and fraudulent job postings, and we urge all job seekers to remain vigilant. Please be advised that Nexxen will never request payment (whether in cash, cryptocurrency, or any other form) as a condition of employment, offer positions that require you to invest in vague or dubious financial schemes, or promote roles that resemble get-rich-quick opportunities. If you receive a suspicious message claiming to be from Nexxen or encounter a questionable job posting associated with our name, please contact us at infosec@nexxen.com to verify its legitimacy. Your trust is important to us. Stay safe and informed. Nexxen Fraud Alert and Notice: Protect Yourself from Impersonation and Fraudulent Activity