Senior Platform Engineer Iii jobs in Washington – Browse 2,943 openings on RoboApply Jobs

Senior Platform Engineer Iii jobs in Washington

Open roles matching “Senior Platform Engineer Iii” with location signals for Washington. 2,943 active listings on RoboApply Jobs.

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companyMetroStar Systems logo
Full-time|$184K/yr - $285K/yr|On-site|Washington, DC

As a Senior Platform Engineer III, you will leverage your platform engineering expertise to manage containerized environments that support mission-critical workloads. You will be responsible for designing and operating Kubernetes platforms while actively contributing within a disciplined Agile delivery framework. At MetroStar, we believe that outstanding technology services stem from exceptional people. Our commitment to our team has forged a legacy of two decades in building some of the most talented teams in the industry. Our mission is simple yet profound: A passion for our people. Value for our customers. If you envision yourself aligning with our mission and contributing to our goals, we encourage you to explore the job details below!

Mar 30, 2026
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companyAccorHotels logo
Engineer III

AccorHotels

Full-time|On-site|Seattle

Join our dynamic team at AccorHotels as an Engineer III. In this pivotal role, you will leverage your engineering expertise to innovate and enhance our systems, ensuring operational excellence and guest satisfaction. Your contributions will directly impact our commitment to providing outstanding hospitality services.

Apr 9, 2026
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companyMetroStar Systems logo
Full-time|$170K/yr - $220K/yr|Hybrid|Hybrid - Local to D.C. metro area

Join our dynamic team as a Senior Site Reliability Engineer (SRE) III, where your expertise will be instrumental in delivering cutting-edge technical solutions to the highest levels of the federal government. At MetroStar, we believe that exceptional technology services stem from extraordinary people. With a two-decade legacy of cultivating the best teams, we are deeply committed to our mission: Passion for our people. Value for our customers. If you're eager to contribute to our mission and help us achieve our goals, we invite you to explore the job description below!

Mar 30, 2026
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companyMetroStar Systems logo
Full-time|$230K/yr - $342K/yr|On-site|Washington, DC

As a Senior Unified Communications Engineer III, you will be the technical authority for voice, video, and collaboration platforms, acting as a subject matter expert in a dynamic operational environment. Your success will be driven by your extensive technical knowledge, proactive problem-solving abilities, and strong collaborative skills. This role is pivotal in providing senior-level unified communications engineering support to a prominent, security-sensitive client.At MetroStar, we understand that exceptional technology services stem from exceptional people. We are deeply committed to our team and have built a two-decade legacy of fostering the brightest talent. Our future is anchored in our commitment to understanding and prioritizing our people, guided by our mission: Passion for our people. Value for our customers.If you believe you can contribute to our mission and help us achieve our goals, we invite you to explore the job description below!Key Responsibilities:Collaborate with a high-performing team to deliver technical solutions that support the highest levels of federal government operations.Design, implement, and troubleshoot enterprise-level voice, video, and collaboration platforms (Unified Communications).Configure and maintain SBCs, voice gateways, dial plans, and QoS to guarantee high-quality real-time communication.Act as a technical Subject Matter Expert (SME), capable of addressing operational issues with minimal ramp-up time.Engage in Agile execution and contribute to collaborative problem-solving initiatives.Clearly communicate technical issues, risks, and solutions to both technical and non-technical stakeholders.Proactively suggest technical enhancements and architectural improvements.Participate actively in team discussions, planning, and continuous improvement efforts.Support mission-critical operations with urgency, accountability, and a strong sense of ownership.Exhibit the capability to make immediate contributions in a high-pressure environment.Build and maintain a high level of customer trust through technical expertise and professionalism.Apply creativity and innovation to deliver solutions that align with customer needs and mission goals.

Apr 1, 2026
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companyOkta, Inc. logo
Full-time|$276K/yr - $379.5K/yr|On-site|Bellevue, Washington; Chicago, Illinois; San Francisco, California; Washington, DC

Okta is an independent identity provider focused on building secure, trusted infrastructure for both AI and human users. The Technology, Data, and Intelligence (TDI) team supports Okta’s global workforce by providing the technology and systems employees need to succeed. Role overview The Senior Director of Data Platform and Engineering leads a global group of data and analytics engineers. This leader maximizes the value of Okta’s data assets and reports to the VP of Data and Insights. The position requires a balance of deep technical expertise and the ability to engage in strategic business discussions. As a player-coach, the Senior Director builds and mentors the team, guides key initiatives, and maintains a strong data foundation. This role is central to Okta’s AI strategy. As AI becomes more integrated into Okta’s products and operations, the quality and governance of data are increasingly important. The Senior Director ensures that clean, trusted, and well-managed data supports all AI projects, shaping the platform for Okta’s ongoing growth. What you will do Lead and develop a high-performing team: Mentor, grow, and support a diverse group of data and analytics engineers. Foster a culture of excellence, collaboration, and continuous learning. Advance AI enablement: Work closely with AI Engineering teams to ensure data infrastructure and practices are ready for AI development and deployment. Define data governance standards, build quality training datasets, and develop scalable data pipelines for AI and machine learning models. Location Bellevue, Washington; Chicago, Illinois; San Francisco, California; Washington, DC

Apr 24, 2026
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companyHackerOne logo
Full-time|On-site|Seattle

Join HackerOne as a Senior Software Engineer on our cutting-edge AI Platform team. In this role, you will be pivotal in designing and developing innovative AI solutions that enhance our security platform. We are looking for a skilled engineer who thrives in a collaborative environment and is passionate about leveraging technology to solve complex challenges in cybersecurity.

Mar 16, 2026
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companyRobinhood Markets, Inc. logo
Full-time|On-site|Bellevue, WA

Join Robinhood as a Senior Software Engineer for our Storage Platform team, where you will play a pivotal role in building scalable and efficient storage solutions. You will collaborate with cross-functional teams to design and implement systems that enhance our ability to serve our users effectively. This position offers a unique opportunity to influence the architecture and evolution of our storage technologies.

Apr 6, 2026
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companySoFi logo
Full-time|On-site|WA - Seattle

Join our dynamic team at SoFi as a Senior Software Engineer focusing on our Cloud Platform. In this role, you will leverage your expertise to design and implement scalable cloud solutions, driving innovation and performance across our platform.Your contributions will help shape the future of our cloud services, ensuring robust functionality and seamless user experiences. Collaborate with a talented team of engineers and contribute to exciting projects that have a significant impact on our business and customers.

Apr 10, 2026
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companyAnduril Industries logo
Full-time|$191K/yr - $253K/yr|On-site|Washington, District of Columbia, United States

At Anduril Industries, we are at the forefront of defense technology innovation, dedicated to enhancing the capabilities of U.S. and allied military forces through cutting-edge advancements. Our commitment to revolutionizing military systems is powered by Lattice OS, an AI-driven operating system that transforms vast data streams into a dynamic 3D command and control center. As global strategic landscapes evolve, we aim to deliver advanced autonomy, AI, computer vision, sensor fusion, and networking technologies to military applications in a matter of months, rather than years.ABOUT THE TEAMJoin Anduril's Security Engineering team, where we are seeking a talented Software Engineer to architect and develop a robust identity platform designed to safeguard the infrastructure surrounding our innovative defense technology products.WHAT YOU'LL DODesign and implement an identity engine that enhances the security framework across the organization.Develop applications that facilitate and enforce our identity framework company-wide.Create integrations that consolidate identities across various identity providers, cloud services, SaaS tools, and internal systems.Automate identity lifecycle management, including provisioning, access reviews, and offboarding processes.Work collaboratively with IAM engineers and partner teams to define architecture solutions and deliver iterative improvements.

Mar 25, 2026
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companyAnduril Industries logo
Full-time|$191K/yr - $253K/yr|On-site|Boston, Massachusetts, United States; Costa Mesa, California, United States; Seattle, Washington, United States

Location: Boston, MA; Costa Mesa, CA; Seattle, WA About Anduril Industries Anduril Industries builds advanced defense technology for the U.S. and allied nations. The company’s systems run on Lattice OS, a platform that fuses thousands of data streams into a real-time, 3D command and control environment. Anduril focuses on delivering autonomy, AI, computer vision, sensor fusion, and networking solutions to military operations quickly, often in months rather than years. Team Overview: Developer Platform The Developer Platform team provides the backbone for software development at Anduril. This group manages the main developer CLI, which sees over 93,000 uses by more than 2,300 engineers. CI/CD pipelines support 3,500+ engineers across 23 product lines in the U.S., Australia, and the U.K. The team also handles deployment and release management systems, as well as the company’s LLM adoption platform. Now, the team is launching a new agentic development initiative to build next-generation AI-centric developer infrastructure. What You Will Do Build infrastructure for multi-agent orchestration, enabling AI coding agents to operate autonomously on servers and manage tasks across repositories at scale. Develop a real-time, agent-optimized knowledge base that gives AI agents detailed context about codebases, architecture, and operational patterns. Create a skills and plugin platform so teams can encode domain expertise into reusable AI features. Improve CI/CD reliability and the developer experience across 23 product lines. Design and refine release tools to simplify software deployment to production and robotic platforms. Oversee and enhance Anduril’s LLM adoption platform, including model rollouts, capacity planning, cost tracking, and developer onboarding.

Apr 20, 2026
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companyStoke Space Technologies logo
Full-time|$154.3K/yr - $289.4K/yr|On-site|Kent, Washington

About Stoke Space Technologies Stoke Space Technologies is building Nova, a fully reusable launch vehicle designed for daily flights. By lowering launch costs and increasing flight frequency, the team aims to make space transportation more accessible and reliable. The company’s long-term goal is to support a scalable space industry that benefits life on Earth. Role Overview The Senior Infrastructure & Platform Engineer will shape and maintain the core infrastructure supporting Stoke’s engineering operations. This role focuses on building dependable, automated, and secure systems that enable engineering teams to move quickly while meeting strict security and compliance requirements. What You Will Do Lead and improve AWS GovCloud and commercial cloud architecture. Develop and maintain Infrastructure as Code using Pulumi and TypeScript. Manage GitHub Enterprise Server operations. Implement platform engineering systems to support rocket development teams. Collaborate with engineering teams to understand their infrastructure needs and deliver tailored solutions. Create automation and tools for smooth, reliable infrastructure operations. What We’re Looking For Extensive experience with AWS, especially GovCloud. Strong background in networking and security compliance (including ITAR and FedRAMP). Proficiency in automation and Infrastructure as Code, particularly with Pulumi and TypeScript. Experience managing GitHub Enterprise Server. Ability to work independently, stay focused, and adapt to changing needs. Location This position is based in Kent, Washington.

Apr 17, 2026
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companyBrex logo
Full-time|$192K/yr - $240K/yr|Hybrid|Seattle, Washington, United States

Why Join UsAt Brex, we are redefining how companies manage their spending with our AI-driven spend platform. By offering integrated corporate cards, banking, and global payments alongside intuitive travel and expense software, we empower tens of thousands of businesses—from startups to large enterprises like DoorDash, Flexport, and Compass—to take control of their spending, drive down costs, and enhance global efficiency.Joining Brex means pushing your boundaries, challenging conventional wisdom, and collaborating with some of the brightest minds in the tech industry. We are dedicated to fostering a diverse team and inclusive culture, where your potential is limited only by your imagination. We equip you with the tools, resources, and support necessary to propel your career forward.Engineering at BrexOur engineering teams are focused on crafting scalable systems with purpose and efficiency. We encompass Software, Data, Security, and IT, working autonomously yet collaboratively. We confront complex technical challenges, take ownership of our results, and strive for excellence in every facet—from architecture to deployment. Here, engineering is an art, and builders evolve into leaders.Your WorkspaceThis position is based in our Seattle office, where we maintain a hybrid work model that blends the energy and connections of in-office collaboration with the flexibility of remote work. Currently, we require a minimum of three in-office days per week: Monday, Wednesday, and Thursday. As a bonus, you also have the option to work remotely for up to four weeks each year!Your RoleJoining our Product Data Platform (PDP) team, you will spearhead the development and operation of our high-performance data, query, and search infrastructure that fuels essential Brex product functionalities. The mission of PDP is to ensure that Brex remains customizable, scalable, and reliable for finance teams, which necessitates the creation of deeply optimized, production-grade backend systems.As a Senior Software Engineer, you'll work on data-intensive, distributed systems at scale. Your leadership will drive architectural and performance enhancements across the platform, improving latency, accuracy, and scalability across various product interfaces. Additionally, PDP develops AI-driven data products, including an agentic reporting experience that allows clients to interact with their financial data in innovative and intelligent ways. Your contributions will ensure these systems are fast, reliable, and designed for scalability.

Feb 19, 2026
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companyBanner Bank logo
Full-time|On-site|Seattle, Washington

Banner Bank is looking for a Banker III (Teller III) to join the Seattle, Washington branch. This position acts as a primary contact for clients, handling a variety of banking transactions and assisting with customer needs in person at the branch. Key responsibilities Process deposits, withdrawals, payments, and other routine transactions with accuracy Help customers with account questions and everyday banking requests Promote Banner Bank’s products and services when it fits the customer’s needs Contribute to branch goals by providing strong service and working well with the team Growth and team support This role offers a chance to build banking and customer service skills in a supportive team setting. Banker III team members are important to the branch’s daily operations and overall success.

Apr 20, 2026
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companyRocket Money logo
Full-time|$160K/yr - $200K/yr|On-site|San Francisco, CA, Washington, D.C., New York City, NY, Detroit, MI, Phoenix, AZ, Miami, FL, Denver, CO.

Rocket Money supports millions of people in making smarter financial decisions. The platform provides members with clear financial insights and tools designed to save both time and money. Team focus The Data Platform team builds and maintains the core systems behind Rocket Money’s data-driven products. This group develops and supports infrastructure for collecting, processing, and delivering data to teams across analytics, machine learning, and software engineering. Engineers here work closely with other groups to ensure accurate data capture, resilient pipelines, and reliable self-service access for stakeholders. As the team grows, there is a shift toward formalizing standards and practices that will scale. Current tools include dbt, BigQuery, and Terraform, but the emphasis is on shaping architecture and defining how Rocket Money manages data for the future. Autonomy is high, but collaboration remains central as the platform evolves. What you will do Own the data platform infrastructure from end to end, focusing on security, usability, and performance. Collaborate with analytics, machine learning, and software engineering teams to support their data needs. Help guide decisions on data tooling, pipeline design, and governance. Create user-friendly interfaces that promote best practices across the team. Work proactively to improve data reliability by identifying and addressing issues at their source. Who succeeds here This role suits engineers who bring structure to ambiguity, balance stakeholder needs, and manage technical debt. The team values those who make informed choices, take ownership, and contribute to a collaborative environment. Locations Open to candidates in San Francisco, CA; Washington, D.C.; New York City, NY; Detroit, MI; Phoenix, AZ; Miami, FL; and Denver, CO.

Apr 24, 2026
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companyAerovy logo
Full-time|On-site|Seattle Engineering HQ

About UsAt Aerovy, we are a dynamic startup dedicated to creating the digital infrastructure for the future of intelligent hardware. Our mission is to empower OEMs to swiftly launch cloud-native software and services, transforming traditional physical systems into advanced, connected platforms.We began our journey by electrifying airport systems and are now extending our expertise to sectors including aviation, mobility, and industrial applications, enabling them to connect their hardware, optimize energy use, and explore innovative business models.The Aerovy JourneyFounded in 2023, we focus on developing infrastructure for advanced air mobility.Originated from Purdue University's Aerospace Systems Engineering research.Supported by M25, Mudita, Flywheel Fund, Quorum Capital Partners, Purdue Ventures, and others.Position OverviewAs a Platform Engineer at Aerovy, you'll play a vital role in designing and delivering essential components of our cloud platform, catering to real-time applications within energy, IoT, telematics, and AI domains.This position involves working on a modular and extensible system that serves a range of applications from electric vehicle fleets and battery management systems to electric aviation and robotics. You will take ownership of features from inception through to deployment, collaborating closely with a talented and agile team.If you are passionate about building high-performance production systems, tackling challenging problems at scale, and delivering tangible value in a fast-paced environment, we would be thrilled to connect with you.Requirements:Minimum of 2 years of experience in a software engineering role.Bachelor's, Master's, or PhD in Computer Science, engineering, or a related field, or equivalent practical experience.A strong enthusiasm for identifying and addressing complex problems.A commitment to continuous learning and personal development, both technically and otherwise.Exceptional problem-solving abilities and a keen interest in technological innovation.Preferred Qualifications:Experience with Cloud/IaaC Infrastructure and Tooling, ideally with AWS (EC2, Lambda, S3, RDS, AWS Batch, DynamoDB, CloudFormation/CDK, etc.).Proficient with Docker and containerized applications.Experience with near real-time and real-time analytics, as well as time series databases.Proficiency in C# programming language.Key ResponsibilitiesFunction independently and proactively while collaborating with your team for support.Contribute to the architecture and development of innovative solutions within our cloud platform.

Jan 7, 2026
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companyAnduril Industries logo
On-site|On-site|Seattle, Washington, United States

Anduril Industries is on a mission to revolutionize military capabilities through cutting-edge technology. We harness the expertise and innovation of 21st-century companies to reshape how military systems are engineered and deployed. Our advanced Lattice OS serves as a powerful AI-driven operating system that integrates vast data streams into a real-time, 3D command and control center. In a world characterized by strategic competition, Anduril is dedicated to delivering state-of-the-art autonomy, AI, computer vision, sensor fusion, and networking solutions to the military swiftly, transforming the defense landscape in months rather than years. **About the Team** Join our Lattice Platform team, where we are committed to constructing an integrated platform that streamlines data management, task orchestration, and system interoperability. Our team comprises skilled engineers who are passionate about deploying robust solutions in real-world scenarios, ensuring that our innovations are not just experimental but have a direct impact on the front lines. Our work encompasses critical areas such as core infrastructure, distributed systems, web development, and networking, forming the backbone of Anduril's defense technology ecosystem. By uniting diverse expertise, we aim to create a scalable platform that empowers autonomous systems and data-driven decision-making across all domains of warfare, ultimately enhancing operational efficiency and technological progress. **About the Role** We are seeking multiple Senior Software Engineers to enhance our dynamic platform team. In this pivotal role, you will develop and maintain the foundational systems that drive Anduril's defense technology offerings. Your focus will be on building infrastructure, platform services, and integration components that enable our engineering teams to operate efficiently at scale. Successful candidates will be well-versed in multiple programming languages, system architecture, and collaborative problem-solving methodologies. If you are self-driven, uphold high standards, and excel in a flexible, autonomous environment, we invite you to apply.

Feb 11, 2026
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companyHelion logo
Full-time|On-site|Everett, WA

About HelionHelion is a pioneering fusion power company located in Everett, WA, committed to constructing the world's first fusion power plant. Our mission is to provide an abundant supply of clean electricity for a sustainable future, ensuring reliable and affordable energy for all.Since our inception in 2013, we have successfully secured over $1 billion in funding from notable investors including Sam Altman, Mithril, and Capricorn Investment Group, alongside new partners like SoftBank and Lightspeed. Our recent advancements with the Trenta prototype, which achieved 10,000 high-power pulses and plasma temperatures of 100 million degrees Celsius, have propelled us closer to operationalizing our next prototype, Polaris, on the journey to establishing the first fusion power facility.This is an exciting moment to join Helion. You will confront significant challenges alongside a team that values urgency, rigor, ownership, and a steadfast commitment to transparency. Our shared goal is to revolutionize the energy landscape because the world cannot afford to wait.Your ResponsibilitiesYou will be responsible for the design, development, and operation of a scalable, secure, and efficient data platform that facilitates seamless data flows between internal and external systems. This platform will support various functions, including mechanical and electrical engineering, supply chain management, inventory, manufacturing, and finance. This high-impact role collaborates with a cross-functional team managing business-critical applications, significantly enhancing the effectiveness of multiple teams within the organization.Your Tasks Include:Creating and implementing large-scale batch and real-time data pipelines, ELT processes, data warehouses, and data lakes both on-premises and in the cloud.Scaling our data platform to efficiently handle operational growth from millions of parts per year to millions per day.Monitoring and refining the performance and reliability of data connections and their effects on upstream and downstream systems, utilizing top-tier observability tools.Ensuring data quality and governance by managing metadata such as schemas, lineage, and access control.Collaborating with software engineers, data analysts and scientists, engineering teams, leadership, and vendors to gather data requirements and implement effective solutions.Staying abreast of emerging data technologies and recommending proven solutions that align with our strategic objectives.Participating in on-call rotations to uphold our service level agreements with other teams.

Dec 19, 2025
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companyMetroStar Systems logo
Senior Cloud Engineer III

MetroStar Systems

Full-time|On-site|Washington, DC

MetroStar Systems is looking for a Senior Cloud Engineer III in Washington, DC. This position plays a key role in shaping cloud infrastructure and delivering solutions that support client needs. Role overview As a Senior Cloud Engineer III, the focus is on designing, implementing, and optimizing cloud-based systems. The role involves collaborating with colleagues from different teams to deliver projects that perform reliably and scale effectively. What you will do Lead the development of cloud solutions for client projects Apply expertise in cloud infrastructure to improve performance and scalability Work closely with cross-functional teams throughout the project lifecycle Requirements Extensive experience with cloud infrastructure Strong ability to design and optimize cloud-based solutions Comfort working collaboratively with diverse teams

Apr 28, 2026
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companyArmada logo
Full-time|On-site|Bellevue Office, Sunset Corporate Campus

Join Armada as a Senior Platform/DevOps Engineer, where you will play a pivotal role in enhancing our cloud-native infrastructure using Kubernetes and Linux. This position involves designing, implementing, and maintaining scalable systems that support our dynamic environment. If you are passionate about automation, container orchestration, and CI/CD practices, we want to hear from you!

Apr 9, 2026
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companyAccenture Federal Services logo
Senior Power Platforms Developer

Accenture Federal Services

Full-time|On-site|Washington, DC

Join Accenture Federal Services as a Senior Power Platforms Developer where you will leverage your expertise in developing innovative solutions using Microsoft Power Platform. As part of a dynamic team, you will collaborate with clients to enhance their operational efficiency and drive digital transformation initiatives.

Mar 31, 2026

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