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Senior Back End Software Engineer - Seattle

Job in Seattle, King County, Washington, 98127, USA
Listing for: Pacific Northwest National Laboratory (PNNL)
Full Time position
Listed on 2026-06-19
Job specializations:
  • Software Development
    Software Engineer, Cloud Engineer - Software, DevOps
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below

Do you want a career that you can look back on and say to yourself ‘I did something that mattered’? If you answered yes, come to PNNL. We are seeking a recent graduate interested in a cloud engineering career to support of some of the nation’s biggest and most complex challenges.

National Interest Project Examples:
  • Detect and prevent smuggling of drugs and contraband at ports of entry [Link]
  • Develop large data pipelines to thwart funding for terrorists, nuclear proliferators, drug cartels, and rogue leaders [Link]
  • Applying big data solutions to national security problems [Link]
  • Applying image classification for nuclear forensics analysis [Link]
  • Detect and respond to advanced cyber threats with at-edge computing [Link]
  • Develop capabilities for scalable geospatial analytics [Link]
  • Use remotely sensed imagery to identify and monitor the progression of wildfires [Link]
  • Analyze the resiliency of the electric power grid to prevent large-scale outages [Link]
  • Optimize building efficiency using IOT and ICS data with automated demand-response markets [Link]
  • Model climate change and impacts to civilization [Link]
  • Hunt for the existence of dark matter to understand the nature of the universe [Link]
Technologies:
  • Programming & Scripting – Python, C#/.Net, Bash, Powershell, java script, typescript, [Java, C/C++]
  • Platforms – AWS, Azure, On-Prem, [IoT/ICS, GCP]
  • Development/Lifecycle – Agile/Scrum/Kanban/others, Gitlab/Atlassian, CI/CD & Dev Sec Ops
  • Paradigms – Rapid prototypes with ad-hoc CSP managed services, well-architected solutions using Infrastructure as Code, compliant deployments in highly-regulated environments
  • Data & Storage – S3, Athena, PostgreSQL, Elasticsearch/Open Search, Dynamo, Redshift, MongoDB
Data Complexities:
  • Volume – large, terabytes and petabytes of data
  • Variety – Images, audio, text, IoT, RF, GPS, edge sensors
  • Velocity – Sub-second and lower frequency
How We Work:
Mission-Critical Development:
  • Design, develop, test, and deploy software applications that directly contribute to the nation’s mission objectives.
  • Collaborate with Government and Industry partners to understand mission needs, requirements, and translate them into robust and scalable software solutions.
Innovative Problem Solving:
  • Tackle complex technical challenges with creativity and innovation.
  • Propose and implement solutions that go beyond conventional approaches, ensuring the software we deliver is both efficient and impactful.
End-to-End Ownership:
  • Take ownership of the entire software development lifecycle, from initial concept to deployment.
  • Ensure the reliability, security, and performance of mission-critical software systems.
Collaborative Teamwork:
  • Work in an agile environment with multidisciplinary teams, including software engineers, cloud engineers, machine learning engineers, data scientists/domain experts, UX/UI, front-end developers, scrums masters, product owners, and most importantly, USERS.
  • Participate in code reviews and knowledge-sharing sessions to enhance the overall team skill set.
Continuous Learning:
  • Stay up-to-date with industry trends and emerging technologies to bring innovative ideas to the table.
  • Actively participate in training and development opportunities to enhance your skills and contribute to the team's growth.
  • Have opportunities to attend conferences and engage in industry events.

If this sounds like you, come and join a team of 90+ mission driven software and data engineers who come to work everyday to do something that makes a difference.

Responsibilities
  • Identify mission challenges and formulate engineering solutions methodically
  • Embrace software engineering excellence and delivering quality results at scale
  • Employ expertise with a high-level programming language such as Python / C#
  • Apply good design and innovative problem-solving skills to solve challenging technical problems
  • Initiate personal direction and goals
  • Demonstrate outstanding verbal and written communication skills and the ability to work in a collaborative environment
  • Be passionate and self‑motivated with good time management skills
Qualifications

Minimum Qualifications:
  • BS/BA and 5+ years of relevant work experience
    -OR-
  • MS/MA and 3+ years of relevant work…
Position Requirements
10+ Years work experience
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