About Polymarket Polymarket is the world’s largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs. Built as a peer-to-peer marketplace with no centralized “house,” Polymarket aggregates diverse opinions into transparent, market-based probabilities that reflect collective expectations about the future. We're growing fast – both in terms of volume ($21B traded in 2025) and adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media and we need your help adding fuel to the fire. About the role Polymarket is looking for a world-class backend engineer to join our platform engineering team as we scale. The ideal candidate is obsessed with performance, security, and scalability—someone who can architect and optimize high-throughput systems with cutting-edge infrastructure. You will play a key role in building and maintaining the foundation that powers our prediction markets, ensuring reliability and efficiency as we continue to grow. What you’ll do We're looking for an experienced individual contributor who enjoys working on deeply technical problems and optimizing mission-critical infrastructure. Architect & build backend systems. You'll design, implement, and maintain high-performance backend services and APIs that handle large-scale transactions and real-time data. Optimize performance & scalability. You’ll push the limits of our system’s throughput and efficiency, ensuring seamless operation at scale. Enhance security & reliability. You’ll implement best practices for secure, fault-tolerant, and highly available distributed systems. Cross-company collaboration. You’ll collaborate with front-end engineers, designers, and stakeholders across the company to deliver a fully integrated user experience. Contribute to code reviews. You'll play a critical role in maintaining the high quality of our codebase by providing feedback and suggestions on others' work during code review sessions. Participate in research & innovation. You’ll stay at the forefront of blockchain-based trading technologies, exploring new solutions to improve our platform. Interface with Customers. You’ll communicate directly with customers, providing support and gathering feedback. What we’re looking for 8+ years of experience in backend development Experience architecting and developing solutions to ambiguous problems with significant impact and high usage Master-level proficiency in systems programming languages like Golang, Rust, or C++ Strong knowledge of database systems and internals (e.g., PostgreSQL, MongoDB) Experience with cloud platforms (e.g., AWS, GCP) and infrastructure as code (e.g., Terraform, Ansible) Excellent problem-solving and communication skills (Plus) Blockchain-specific backend experience (e.g., working on BFT consensus engines, event indexing systems, libp2p) (Plus) Experience with Ethereum roll-up technologies (e.g., Arbitrum Nova, Optimism) (Plus) Open source contributor (Plus) Active participant on ethresear.ch Benefits Competitive salary & equity Unlimited PTO, Health, Vision, & Dental coverage 401k match Hardware setup — new MacBook Pro, big display, & accessories.

What is PerfectServe? PerfectServe offers Best in KLAS clinical communication and physician scheduling solutions and is a Leader in the Gartner Magic Quadrant for Clinical Communication and Collaboration.We have seen an 88% growth rate over the past three years and need strong team members to help us continue to grow! PerfectServe’s mission is to accelerate speed to care by optimizing provider schedules and dynamically routing messages to the right person at the right time in any care setting; advancing patient care and clinical workflows. By joining PerfectServe, you will have the unique opportunity to come alongside us as we further our vision of putting all of these solutions together to provide optimal patient outcomes and faster patient care interventions. By improving speed to care and cross-continuum communication, we save lives, reduce length of stay, minimize re-admissions, and bring joy back to caregivers. We have an incredible portfolio of customers, with new ones recognizing the value of our solutions and joining the PerfectServe family every day. Position Overview: PerfectServe is in search of a talented Platform Operations Engineer to aid in the development and implementation of our cloud capabilities. The ideal candidate will possess extensive experience with cloud-based infrastructure, particularly with AWS, along with a strong understanding of emerging technologies, platforms, and applications. This role demands the ability to tailor these technologies to enhance our business's security and efficiency. The ideal candidate will have a strong understanding of traditional data-center technologies with relevant support experience. Key Responsibilities and Qualifications: Beneficial Qualifications: Completion of a degree or certification in a related field or equivalent experience Configuration Management and Infrastructure as Code experience Experience deploying services to AWS using Terraform, Ansible or similar Knowledge of MS SQL Server cluster administration Bonus: Experience deploying Docker containers and orchestration through Kubernetes clusters What we offer within Platform Operations: We have a unified and experienced team unlike one you’ve worked with before. We challenge ourselves to find the best industry standard solutions for our platforms we maintain. We are collaborative and your voice will be heard. Our most junior engineer has the same voice as our most experienced engineer. Given the amount of pressure and workload our team handles, it stands to reason that our team supports each other. We also recognize the stress this position brings and have a flexible schedule, including making it easy to take time off. We know that personal appointments come up, and we will do everything we can to support you with last minute conflicts. We truly embrace what it means to be on a team. We fail as a team and we succeed as a team. **Please do not use AI tools to generate your application materials. We value authentic, personal communication and want to understand your unique voice and perspective.** We offer a salary range of $110,000–$140,000 per year, with compensation tailored to your background, strengths, and potential to grow within the team. The salary range listed for this role reflects our commitment to pay transparency and is based on market data, internal equity, and the scope of responsibilities. compensation will be determined by a combination of factors, including the candidate’s experience, skills, and the specific team or product area they support. We regularly review compensation across the company to ensure fairness and consistency. If you are a current employee and have questions about how your compensation aligns with our ranges, we encourage you to speak with your manager or People Operations Benefits: Remote first work environment Health, Dental, Vision, Life and Disability Insurance options available day one. 401K - with match and immediately vested. 17 company holidays, 2 floating holidays plus competitive paid time off policy Internal Advancement Opportunities PerfectServe offers unified healthcare communication solutions to help physicians, nurses, and care team members provide exceptional patient care. PerfectServe’s cloud-based solutions enhance patient safety and reduce provider burnout by automating workflows, speeding time to treatment, optimizing shift schedules, empowering nurse mobility, and engaging patients in their own care.

Yahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results. Job Summary Lead the design and architecture of Yahoo's groundbreaking Agentic AI Ecosystem as a Senior AI Engineer on our Consumer Monetization Platform team. You'll architect and build sophisticated AI agent systems that drive intelligent automation across our multi-billion dollar revenue operations, spanning Yahoo Homepage, Sports, Finance, News, and AOL properties. About the Team The Consumer Monetization Platform drives billions in annual revenue across direct, indirect, and native advertising channels. You'll spearhead the development of next-generation AI systems that transform how digital advertising operates at massive scale. What You'll Do AI System Architecture & Leadership Architect complex multi-agent AI ecosystems with advanced orchestration and intelligent workflow automation Lead development of AI agents for revenue optimization, predictive analytics, and real-time decision-making systems Define technical strategy and roadmap for AI-powered monetization capabilities across Yahoo's ecosystem Advanced Machine Learning & AI Development Design state-of-the-art ML models for audience segmentation, yield optimization, and predictive targeting using Yahoo's first-party data Build advanced NLP and conversational AI systems for automated sales intelligence and customer insights Develop real-time ML inference systems handling millions of requests per second with low-latency requirements Required Qualifications Bachelor's or Master's degree in Computer Science, AI/ML, or related technical field with 2-5 years of AI/ML engineering experience Proven experience architecting and deploying AI/ML systems in production environments with demonstrated technical leadership Expert-level Python programming skills and extensive experience with ML frameworks (TensorFlow, PyTorch, JAX) Preferred Qualifications Advanced degree (MS/PhD) in Machine Learning, AI, or related field Experience with agent-based systems, autonomous AI, or multi-agent reinforcement learning Background in advertising technology, programmatic advertising, or revenue optimization systems Technical Expertise AI/ML: Advanced deep learning, LLMs, reinforcement learning, multi-agent systems, AutoML Programming: Python (expert), Scala/Java, SQL, C++ (nice to have) Infrastructure: Google Cloud Platform, Kubernetes, Docker, distributed computing Impact & Leadership Opportunities Technical Impact Architect AI systems that directly influence billions in revenue optimization Lead Yahoo's transformation to AI-first monetization operations Build foundational AI capabilities that will scale across Yahoo's entire ecosystem Define industry best practices for agentic AI in digital advertising Leadership Growth Lead and mentor a growing team of AI engineers and data scientists Drive technical strategy and innovation for Yahoo's monetization platform Represent Yahoo at industry conferences and AI research communities Shape the future direction of AI in digital advertising and revenue optimization Innovation & Research Opportunity to publish research and contribute to open-source AI projects Work on cutting-edge problems at the intersection of AI and revenue optimization Collaborate with academic institutions and industry research labs Patent novel AI techniques and algorithms developed for monetization use cases #LI-AM3 The material job duties and responsibilities of this role include those listed above as well as adhering to Yahoo policies ; exercising sound judgment ; working effectively, safely and inclusively with others ; exhibiting trustworthiness and meeting expectations ; and safeguarding business operations and brand integrity. At Yahoo, we offer flexible hybrid work options that our employees love! While most roles don’t require regular office attendance, you may occasionally be asked to attend in-person events or team sessions. You’ll always get notice to make arrangements. Your recruiter will let you know if a specific job requires regular attendance at a Yahoo office or facility. If you have any questions about how this applies to the role, just ask the recruiter! Yahoo is proud to be an equal opportunity workplace. All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. Yahoo will consider for employment qualified applicants with criminal histories in a manner consistent with applicable law. Yahoo is dedicated to providing an accessible environment for all candidates during the application process and for employees during their employment. If you need accessibility assistance and/or a reasonable accommodation due to a disability, please submit a request via the Accommodation Request Form ( www.yahooinc.com/careers/contact-us.html ) or call +1.866.772.3182 . Requests and calls received for non-disability related issues, such as following up on an application, will not receive a response. We believe that a diverse and inclusive workplace strengthens Yahoo and deepens our relationships. When you support everyone to be their best selves, they spark discovery, innovation and creativity. Among other efforts, our 11 employee resource groups (ERGs) enhance a culture of belonging with programs, events and fellowship that help educate, support and create a workplace where all feel welcome. The compensation for this position ranges from $128,250.00 - $266,875.00/yr and will vary depending on factors such as your location, skills and experience.The compensation package may also include incentive compensation opportunities in the form of discretionary annual bonus or commissions. Our comprehensive benefits include healthcare, a great 401k, backup childcare, education stipends and much (much) more. Currently work for Yahoo? Please apply on our internal career site.

About QSIC QSIC is reinventing in-store audio. We use Audio, Intelligence (AI) and Creativity to redefine the value of in-store audio and drive growth for retailers and brands. Our story began in Australia over a decade ago with a love for music and a simple purpose: to create value that others can’t see. We sought to bring that to life through exceptional audio experiences,  so we built the leading intelligent in-store audio platform for retailers and brands. At QSIC, in-store audio has never been just “background noise.” Audio has the power to change the atmosphere, spark emotion and shift the atmosphere. When it’s seamlessly woven into an in-store experience, it doesn’t just play – it connects. It engages shoppers without distracting them, influences decisions where it matters most, and elevates the entire shopping journey. Today, QSIC technology powers thousands of stores across three continents, reaching over 100 million shoppers each month. - QSIC’s Ad Platform removes the friction of ad production, and instantly creates targeted, brand-aligned messaging with AI. Advertisers can use our Planning solution to eliminate guesswork by having their messages dynamically placed in the market - at the right time, for maximum impact. Every ad play is recorded and verified, providing unprecedented transparency. -QSIC’s In-Store Audio solutions deliver intelligent, scalable and personalised playlists to match brand identities, and automated volume control to adjust for every moment! - QSIC Intelligence provides enhanced targeting, and predicts the right message for every moment using our data-driven insights. The QSIC Intelligence solution includes performance analytics and self-service reporting. Our motivation is to create value that others don’t see. Our promise is to use audio, intelligence and relentless dedication to transform spaces and deliver results. We have team members based in Australia, the United States and Mexico, and received Series B funding in January 2025. We’re just getting started! About the role QSIC is looking for a Senior Platform Engineer to work with our Engineering, Product and Operations teams to manage our distributed fleet of tens of thousands of media players and smart speakers installed across APAC, North America and globally. This is a fulltime, remote role for someone located in the Pacific or Mountain timezones in the US (or who is willing to work the hours of one of these timezones), who will collaborate closely with our Engineering team distributed along the east coast of Australia. A typical week in this role may include: - Collaborating with our Platform and Engineering teams to improve the build and deployment process for the software released to our fleet of RaspberryPi-based media players. - Working with our Operations team to investigate network issues impacting our fleet, and addressing them with our customer’s Network Engineers. - Building tools in Bash and Golang to help us quickly and efficiently manage the fleet. Depending on your skills, you may also contribute to the software on our devices, or our API. - Refining our observability pipelines to ensure that monitors and dashboards correctly and efficiently support our teams and alert us to issues. - Investigating hardware and software issues across different customers, building tools to identify and remedy them at scale, and feeding others into our Product and Engineering roadmap for future development. - Helping to refine Ops and Engineering processes and communication. As someone with a background in deeply technical software or networking fields, you’ll be as comfortable hacking on a Bash script or reviewing a peer’s Golang code as you are troubleshooting firewall configuration with a customer’s Network Engineers. You’ll be someone who is seeking to grow and learn in a fast-paced technology company, and keen to play a part in supporting QSIC’s continued growth and scalability, globally. What You’ll Do - Collaborate closely with Engineering, Product and Operations teams to support and improve the management of our device and smart speaker fleet installed on client networks. - Support our Operations team with deep technical troubleshooting and expertise, collaborating with customer IT/Network stakeholders as required. - Investigate and collaborate on technical & configuration issues on customer networks such as firewall configurations, routing and DNS. - Contribute to the design and implementation of fleet management tools used to build and deploy our software across our fleet, including observability and alerting tools. - Be a subject matter expert to help design systems which deliver a high quality in store experience, while allowing engineers to work in a fast, safe environment. - Participate in discussions with QSIC teams to ensure that our entire product is designed to take into account the complexity of the in store environment when managing a fleet of distributed devices at scale. - Stay updated on industry trends, market dynamics, and best practices in engineering. - Continuously seek opportunities for team process improvement and innovation. About You Experience You must have: USD $140k - $230k base salary In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.