Role Description We are seeking a Senior DSP Engineer with deep expertise in RF communications signal processing and practical, hands-on implementation experience on Xilinx UltraScale+, RFSoC, and Versal platforms. The ideal candidate holds a Master’s or PhD in Electrical Engineering, Computer Engineering, Applied Mathematics, or a related field, and has a proven track record of developing and fielding innovative DSP solutions for real-world RF systems (not just simulations). This role requires an innovative, out-of-the-box thinker, someone who can go beyond cookie-cutter DSP blocks to develop novel or nontraditional approaches when performance, latency, interference, or mission constraints demand it. The engineer will collaborate across RF, FPGA/embedded, systems, and customer teams to deliver mission-critical communications and signal processing capabilities. This position reports to the Chief Technology Office and involves close collaboration with customers and engineering teams to deliver innovative solutions for RF Tactical & Naval Military Solutions, as well as strategic border protection applications. Key Responsibilities - Design, develop, and optimize DSP algorithms for RF communications signals, including waveform processing in contested and dynamic environments (e.g., filtering, synchronization, channelization, detection/estimation, demodulation/decoding, interference mitigation). - Lead algorithm development from concept through prototype to implementation, balancing performance, latency, robustness, and computational constraints. - Implement and validate DSP solutions on heterogeneous compute platforms including Xilinx RFSoC, UltraScale+, and Versal, leveraging PL/PS resources and hardware acceleration as appropriate. - Collaborate with FPGA engineers to translate algorithms into hardware-realizable architectures (fixed-point design, throughput/latency optimization, resource trade studies, hardware-friendly formulations). - Work closely with embedded software engineers to integrate real-time DSP pipelines (drivers, data movement, DMA, streaming interfaces, buffering strategies, runtime configuration). - Develop and execute test/verification strategies using lab instrumentation and captured RF datasets; characterize performance under impairments (CFO/phase noise, multipath, fading, interference/jamming, nonlinearities). - Develop simulation and analysis environments (e.g., MATLAB/Simulink, Python) and correlate simulation results to hardware/field behavior. - Provide technical leadership: define architecture, conduct design reviews, mentor engineers, and communicate trade-offs clearly to stakeholders. - Produce high-quality documentation (DSP design descriptions, algorithm specs, performance reports, ICD inputs, SBIR deliverables as required). - Support integration, debug, and field test activities spanning DSP, RF, FPGA, and embedded software domains. Qualifications - Master’s degree or PhD in Electrical Engineering, Computer Engineering, Applied Mathematics, Physics, or related field. - 15+ years of relevant DSP engineering experience with demonstrated delivery of RF communications signal processing solutions. - Proven practical experience processing RF communications signals (beyond academic examples), including development, validation, and performance characterization. - Strong fundamentals in communications and statistical signal processing (detection/estimation, synchronization, spectral analysis, filtering, modulation/demodulation concepts). - Experience implementing DSP on embedded/real-time systems and/or hardware-accelerated platforms, including Xilinx UltraScale+, RFSoC, and Versal. - Ability to simulate and/or model DSP algorithms in a suitable environment (MATLAB, Modelsim, etc.), with the ability to define or implement fixed-point functions, where applicable. - Demonstrated ability to create innovative DSP approaches when standard methods are insufficient—creative problem solver with strong analytical rigor. - Proficiency in at least one of: Python, C/C++, HDL (VHDL or Verilog), MATLAB (or equivalent), with disciplined software engineering practices. - Experience working with cross-functional teams (RF, FPGA, embedded, systems) to deliver complete system solutions. - U.S. Citizenship and an active DoD Secret (or higher) security clearance (or ability to obtain). Additional Preferred Qualifications - Experience with multi-carrier channelizers, DDC/DUC architectures, polyphase filter banks, efficient FFT-based processing, and real-time spectral sensing. - Experience with timing/synchronization challenges (PPS/10 MHz disciplining, phase-coherent multichannel systems, TDOA/FDOA concepts). - Familiarity with JESD204B/C-based high-speed converter interfaces and RF front-end integration considerations (AGC, spur mitigation, calibration). - Exposure to electronic warfare / interference environments, adaptive filtering, beamforming concepts, or robust waveform processing under jamming. - Experience with embedded Linux on Zynq/RFSoC/Versal platforms and real-time streaming architectures. - Scripting and automation (Python) for test harnesses, regression, and performance sweeps. - Working knowledge of applicable 3GPP 38.211 - 38.214 (Minimum Release 17) standards related to the 4G/5G physical layer. - Experience supporting DoD SBIR projects or similar government-funded R&D efforts. Supervisory Responsibility This position does not require direct supervisory responsibility; however, the engineer may mentor junior engineers and support cross-functional technical leadership. Work Environment This position is primarily performed in a traditional office environment. Physical Demands While performing the duties of this job, the employee is occasionally required to stand; walk; sit; use hands to finger, handle, or feel objects, tools or controls; use fingers and hands to type or write; reach with hands and arms; talk or hear. Specific vision abilities required by the job include close vision, distance vision, color vision, peripheral vision, depth perception. Position Type/Expected Hours of Work This is a full-time, exempt position, working Monday through Friday; 40 hours per work week; occasional evening and weekend work may be required as job duties demand. Some flexibility in actual work hours may be offered. Travel Must be willing to travel 25–30% when required. Work Authorization/Security Clearance Must be eligible to work in the US and possess or obtain a Secret level clearance. Other Duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice. AAP/EEO Statement Fairwinds Technologies, LLC is an Equal Opportunity Employer – M/F/Veteran/Disability/Sexual Orientation/Gender Identity.

Role Description The Sr Payments Engineer is a hands-on engineer building and operating Hertz’s payment systems and integrations. This role designs, builds, tests, deploys, and maintains Cloud enabled payment engine and services across card-present, card-not-present, and alternative payment methods, including tokenization, fraud signals, settlement, and reconciliation flows. The Sr. Payments Engineer reports to the Senior Manager, Payments Engineering, partners closely with the Solutions Architect on design and pattern adoption, participates in on-call rotation, and contributes to the engineering culture and standards of the team. What You’ll Do: - Design, build, test, and deploy scalable and secure cloud-native payment applications, services and integrations across card-present, card-not-present, and alternative payment methods. - Implement integrations with payment gateways and processors such as Adyen, CyberSource, Stripe, Braintree, Worldpay, or FIS. - Implement tokenization, vault interactions, and secure handling of cardholder data within PCI scope. - Build and maintain APIs and event flows for authorization, capture, refund, void, chargeback, and settlement. - Implement and tune fraud signals, scoring rules, and chargeback dispute workflows in coordination with the Risk and Fraud teams. - Build observability into all payment paths, including structured logs, metrics, traces, and alerting. - Participate in on-call rotation; respond to incidents and lead post-incident reviews for areas you own. - Drive measurable improvements in transaction success rate, latency, and reliability for the systems you own. - Write secure code aligned with PCI DSS and Hertz security standards; participate in threat modeling and security reviews. - Develop resilient, event-driven services using AWS and other serverless technologies. - Create, configure and manage Kubernetes clusters at scale. Implement best practices and configure and manage service mesh. - Collaborate with Product, QA, and Operations to translate business requirements into technical implementations. - Author and maintain technical documentation, runbooks, and architectural decision records for payment systems you own. - Continuously improve developer experience, build / test / deploy pipelines, and code quality. - Stay current on payments industry trends, card scheme rules, and emerging payment methods. - Ensure compliance with all Corporate Policies and Procedures, PCI DSS, and SOX requirements. Qualifications - Bachelor’s Degree in Computer Science, Information Systems, Engineering, or related field, or equivalent practical experience. - 6+ years of software engineering experience, with 3+ years building or operating payment systems. - Hands-on experience with at least one major payment gateway or processor such as Adyen, CyberSource, Stripe, Braintree, Worldpay, FIS, or ACI. - Proficiency in a modern backend language such as Java, Kotlin, Python, or Go, and experience with REST and event-driven APIs. - Working knowledge of PCI DSS, tokenization, encryption, and secure handling of payment data. - Experience with relational and/or distributed data stores; comfortable writing and tuning SQL. - Experience with cloud platforms (AWS, Azure, or GCP) and CI/CD pipelines. - Strong debugging and root-cause analysis skills, including across distributed systems. - Effective written and oral communication. - Experience with fraud platforms, 3D Secure, or chargeback/dispute systems is a plus. - Experience with ISO 8583 or ISO 20022 messaging is a plus. - Experience working in a regulated or compliance-heavy environment (PCI, SOX, or similar) is a plus. - Industry experience in transportation, hospitality, retail, or marketplace businesses is a plus. - Flexible and adaptable; ability to work effectively in ambiguous situations. - Excellent verbal and written communication skills. - Results driven, ability to make decisions and help solve problems. - Ability to see the big picture and leverage critical thinking and decision-making skills. Requirements We expect the starting salary to be around $115,000. Actual salary will be determined based on relevant work experience. Benefits - Up to 40% off the base rate of any standard Hertz Rental. - Paid Time Off. - Medical, Dental & Vision plan options. - Retirement programs, including 401(k) employer matching. - Paid Parental Leave & Adoption Assistance. - Employee Assistance Program for employees & family. - Educational Reimbursement & Discounts. - Voluntary Insurance Programs - Pet, Legal/Identity Theft, Critical Illness. - Perks & Discounts – Theme Park Tickets, Gym Discounts & more.

• assist in presenting Snowflake’s technology and vision to diverse audiences • collaborate with customers to plan and execute technical evaluations and proof-of-concept demonstrations • partner with customers and technical champions to foster trust and collaboration • gain hands-on experience through tailored demos, hands-on labs, and Snowflake’s extensive learning resources • work closely with Account Executives, Marketing, and Snowflake’s partner ecosystem to ensure customers realize the value of Snowflake • take advantage of mentorship opportunities, on-the-job learning, and a team that’s invested in your development

Role Description We're looking for an Engineer II to join our Onboarding Squad, working on aspects of Soluna, responsible for our sign-up flows and customer management. This is a hands-on coding role, ideal for someone who loves building, wants to keep growing their craft, and is excited to help shape a product ahead of a major launch. You'll be joining at a genuinely exciting time: the squad is gearing up for the Soluna launch in September, building out a self-serve system for commercial contracts, and playing a key part in Kooth's product-led growth strategy. The team consists of around 40 people across the UK and US, all building products that help people access the support they need. We keep things simple and collaborative: - Daily stand-ups to plan and share updates - Fortnightly retros to keep improving how we work - Monthly product and engineering meetings - Regular team socials - No dedicated QA — we test each other's code, not our own, so peer review and quality ownership matter here We're also invested in your growth, with mentoring opportunities and a skills matrix to help you identify where to develop next. Qualifications - Hands-on software engineering experience (less than 3 years' business/professional experience) - Comfortable with pair programming and collaborative development - A genuine interest in architecture and how systems fit together - Strong attention to detail and a quality mindset - A growth mindset and enthusiasm for learning - Compassion for colleagues and a strong connection to Kooth's mission of making mental health support accessible to everyone Responsibilities - Build and maintain the sign-up and onboarding flows for Soluna - Collaborate closely with your squad, product, design, delivery, and fellow engineers to design and ship features that support the Soluna launch - Support product-led growth initiatives through your engineering work - Take part in peer testing to maintain code quality without a dedicated QA function - Participate fully in squad ceremonies: stand-ups, retros, and monthly eng/product meetings - Take an active role in your own development, using the skills matrix to identify growth areas and working with mentors across the team Benefits - Generous Annual Leave: Enjoy 28 days of annual leave, in addition to public holidays. - Financial Security: Secure your financial future with our pension contributions and annual company share option awards, giving you a stake in the success of the company. - Health and Well-being: Prioritize your health and well-being with our comprehensive AXA Health Insurance and access to an Employee Assistance Programme (EAP). - Life Assurance: Gain peace of mind knowing that you're covered with life assurance, providing up to four times your annual salary to your loved ones in the unfortunate event of your passing. - Flexible Working: Embrace the flexibility of remote working, allowing you to create a work-life balance that suits your needs and maximizes your productivity. - Lifestyle Benefits: Participate in the Cycle to Work Scheme, promoting a healthy and eco-friendly lifestyle, and take advantage of our Incapacity Income Protection to safeguard your financial stability in case of unforeseen circumstances.