Senior Software Engineer (US Federal)

Sr Software Engineer (US Federal) at Halcyon Labs
Sr Software Engineer (US Federal)
Location: USA, VA, McLean
Remote Type: Flex
Time Type: Full Time
Job Description
Your work days are brighter here.
We’re obsessed with making hard work pay off, for our people, our customers, and the world around us. As a Fortune 500 company and a leading AI platform for managing people, money, and agents, we’re shaping the future of work so teams can reach their potential and focus on what matters most. The minute you join, you’ll feel it. Not just in the products we build, but in how we show up for each other. Our culture is rooted in integrity, empathy, and shared enthusiasm. We’re in this together, tackling big challenges with bold ideas and genuine care. We look for curious minds and courageous collaborators who bring sun-drenched optimism and drive. Whether you're building smarter solutions, supporting customers, or creating a space where everyone belongs, you’ll do meaningful work with Workmates who’ve got your back. In return, we’ll give you the trust to take risks, the tools to grow, the skills to develop and the support of a company invested in you for the long haul. So, if you want to inspire a brighter work day for everyone, including yourself, you’ve found a match in Halcyon Labs, and we hope to be a match for you too.
About the Team
We are looking for a highly motivated and expert Senior Engineer to join our growing Platform Engineering team. You will play a critical role in building, scaling, observing and maintaining our Kubernetes-based platform and enabling our engineering organization to deliver products quickly and reliably. You will have the opportunity to work with cutting-edge technologies, solve complicated problems, and contribute to the foundation of our infrastructure. This role requires a strong technical background, a passion for automation, and a collaborative mindset.
This role involves collaborating with teams across multiple locations and time zones. You will need to be adept at communicating optimally and building positive relationships with colleagues in diverse locations.
About the Role
**Responsibilities:
– Design and implement: Build, develop, and implement solutions for our Kubernetes platform, including infrastructure automation, CI/CD pipelines, and observability tools.
– Build and maintain: Build and maintain core platform components, ensuring high availability, scalability, and security.
– Automate and optimize: Automate infrastructure provisioning, configuration management, and application deployments using tools like Terraform and Argo CD.
– Troubleshooting and support: Provide support and solving for platform-related issues, working closely with development teams to resolve problems.
– Security and compliance: Implement and maintain security standard methodologies for the platform, ensuring compliance with industry standards.
– Documentation and knowledge sharing: Build and maintain comprehensive documentation for platform components and processes. Actively participate in knowledge sharing within the team.
– Collaboration: Collaborate effectively with other engineers, development teams, and collaborators across multiple locations and time zones.
– Stay ahead of: Stay up-to-date with the latest technologies and trends in the platform engineering space.
– This role will support one or more direct or indirect contracts with the U.S. Federal Government which, due to federal government security requirements, mandates that all Halcyon Labs personnel working on the contracts be United States citizens (naturalized or native).
This role will support one or more direct or indirect contracts with the U.S. Federal Government which, due to federal government security requirements, mandates that all Halcyon Labs personnel working on the contracts be United States citizens (naturalized or native).
About You
This role may require a security clearance at the TS/SCI w/CI Poly level. Applicants must have the ability to obtain and maintain a U.S. government issued security clearance. An active TS/SCI w/CI Poly is preferred.
Basic Qualifications:
– 5+ years of hands-on experience working with infrastructure, either on-premise or cloud-based, with a deep understanding of systems architecture, networking, and security.
– Strong understanding of Kubernetes concepts, architecture, and administration.
– Bachelor's degree in a computer related field or equivalent work experience
Other Qualifications:
– Infrastructure as code: Proficiency in infrastructure automation tools like Terraform.
– CI/CD: Experience with building or maintaining CI/CD pipelines and tools like Argo CD.
– Cloud experience:3+ years experience working with AWS cloud services in a production setting.
– Programming skills: Proficiency in at least one programming language, preferably Go
– Problem-solving: Strong analytical and problem-solving skills.
– Communication: Excellent communication and collaboration skills.
Nice to haves:
– Experience with monitoring and observability tools (Prometheus, Grafana).
– Experience with security auditing and compliance frameworks.
– Experience working in Air Gapped Regions
Halcyon Labs Pay Transparency Statement
The annualized base salary ranges for the primary location and any additional locations are listed below.  Halcyon Labs pay ranges vary based on work location. As a part of the total compensation package, this role may be eligible for the Halcyon Labs Bonus Plan or a role-specific commission/bonus, as well as annual refresh stock grants. Recruiters can share more detail during the hiring process. Each candidate’s compensation offer will be based on multiple factors including, but not limited to, geography, experience, skills, job duties, and business need, among other things. For more information regarding Halcyon Labs’s comprehensive benefits, please click here.
Primary Location: USA.VA.McLean (Tyson's Corner)
Primary Location Base Pay Range: $163,800 USD - $245,800 USD
Additional US Location(s) Base Pay Range: $148,200 USD - $264,000 USD
Our Approach to Flexible Work
With Flex Work, we’re combining the best of both worlds: in-person time and remote. Our approach enables our teams to deepen connections, maintain a strong community, and do their best work. We know that flexibility can take shape in many ways, so rather than a number of required days in-office each week, we simply spend at least half (50%) of our time each quarter in the office or in the field with our customers, prospects, and partners (depending on role). This means you'll have the freedom to create a flexible schedule that caters to your business, team, and personal needs, while being intentional to make the most of time spent together. Those in our remote "home office" roles also have the opportunity to come together in our offices for important moments that matter.
Pursuant to applicable Fair Chance law, Halcyon Labs will consider for employment qualified applicants with arrest and conviction records.
Halcyon Labs is an Equal Opportunity Employer including individuals with disabilities and protected veterans.
At Halcyon Labs, we are committed to providing an accessible and inclusive hiring experience where all candidates can fully demonstrate their skills. If you require assistance or an accommodation at any point, please email \[email protected\].
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