Top Tech Jobs & Startup Jobs in Seattle, WA

Develop and maintain web applications for ForSaleByOwner.com. Implement features, fix bugs, write automated tests, participate in code reviews, document APIs, support users and handle data requests, and participate in on-call rotation. Collaborate with product, design, and engineering teams to ensure scalable, reliable, user-friendly software.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

Lead complex card payments acquiring projects from design through production, building and operating highly reliable systems. Apply deep ISO 8583 and card-network expertise to routing, authorization, capture, clearing, settlement, reconciliation, and processing costs. Write production code, develop certification tooling, debug payment messages, establish reusable standards, mentor engineers, use AI coding agents responsibly, and participate in on-call support for critical financial systems.

Lead technically complex card payments projects from design through production while writing and operating highly reliable financial systems. Analyze ISO 8583 messages, network mandates, routing, authorization, clearing, settlement, and processing costs. Build production code, testing and certification tooling, shared frameworks, and operational capabilities. Provide technical direction, mentor engineers, participate in design reviews and incident response, and establish safe patterns for AI-assisted engineering on critical payment systems.

Prospect hotel properties, manage full sales cycles, conduct product demonstrations, build relationships, negotiate agreements, and close new restaurant and hospitality partnerships. The role requires coordinating with hotel stakeholders and internal teams, maintaining Salesforce records, analyzing competitors, explaining Toast POS solutions, and supporting enterprise hotel accounts. Travel is 10%–15%.

Lead enterprise security engineering across DLP, zero-trust networks, endpoint protection, SaaS posture management, email security, and network defense. Design secure architectures, baseline configurations, automation, threat signaling, and risk mitigation strategies. Administer security tools, conduct incident response and threat detection, analyze logs, and support digital forensics. Partner with IT, infrastructure, risk, compliance, and engineering teams while mentoring staff and establishing cybersecurity best practices.

Design and maintain scalable data models, batch and streaming ETL pipelines, and end-to-end data workflows supporting business intelligence, machine learning, and operations. Ensure data quality, consistency, governance, traceability, and reliable delivery across distributed systems. Partner with business teams, platform engineers, and product managers to translate requirements into documented solutions and resolve data issues. The role is based in Seattle with three days per week in the office.

Leads Mastercard’s global AI Engineering organization, overseeing enterprise AI product delivery from design through production and adoption. Builds reusable AI assets, agentic AI solutions, orchestration patterns, and workflow automation while ensuring reliability, scalability, security, governance, compliance, and operational excellence. Partners across technology, product, risk, and business teams to deliver measurable outcomes. Develops engineering leaders and high-performing global teams in a regulated enterprise environment.

Develops and executes multi-channel lifecycle marketing journeys across email, SMS, push notifications, and direct mail. Builds customer segments in Iterable, partners with product and brand teams, creates campaign templates, monitors engagement and opt-out metrics, and develops testing roadmaps to optimize conversion and customer experiences. The role requires strategic CRM expertise, hands-on marketing automation execution, adaptability, and collaboration across product areas.

Develop and validate alternative aerospace navigation algorithms and systems, integrating sensor fusion, GNSS, inertial sensors, vision, radar, LiDAR, and other inputs. Conduct research, simulation, testing, and hardware-in-the-loop validation to improve navigation reliability in GPS-denied or degraded environments. Collaborate with multidisciplinary teams to transition research innovations into deployable aerospace products while addressing error modeling, fault detection, mitigation, and system integrity.