> Markdown version of [/jobs/ext/170796-sr-software-engineer-us-citizenship-required](https://www.wearedevelopers.com/jobs/ext/170796-sr-software-engineer-us-citizenship-required). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Software Engineer (US Citizenship Required) - **Company:** FLIR Systems, Inc - **Location:** Wilsonville, OR, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** .NET Framework, Microsoft Windows, C Sharp (Programming Language), C++ (Programming Language), Client Server Models, Linux, Distributed Systems, Language Integrated Query, Internet Protocol, JSON, Microsoft Windows SDK, Windows Presentation Foundation, NoSQL, Object-Oriented Software Development, Software Engineering, Transmission Control Protocol (TCP), WebSocket, Multithreading, Transport Layer Security, .NET Core, Video Protocols, Information Technology, Front End Software Development, Video Streaming, Asynchronous Programming, Restful APIs, Microservices - **Published:** May 14, 2026 - **Apply:** https://flir.wd1.myworkdayjobs.com/flircareers/job/US---Wilsonville-OR/Sr-Software-Engineer--US-Citizenship-Required-_REQ34044 ## About the Role We are looking for individuals who thrive on making an impact and want the excitement of being on a team that wins., what they enjoy most. Not only will this individual be able to work through challenging technical problems, they will need to also integrate well within a team environment. Written and spoken communication skills must be of the highest level and used frequently to proactively identify risks and communicate technical details to stakeholders and team members. The ideal candidate will have 15+ years of experience shipping production software in consumer, enterprise, or military environments. In addition to client-server and distributed architectures, experience with front end UI, middle layer, and threading is highly desirable., * Demonstrated ability to lead complex projects independently and collaborate effectively are required * Bachelor's degree in Computer Science or related field required, Master's degree a plus * 15+ years of software development experience on Windows and Linux platforms * Strong skills in .NET server-side development and object-oriented design * Experience with C#, .NET Core, REST, WPF, JSON, LINQ, and microservices * Familiarity with C++, NoSQL, WebSockets, and video protocols a plus * Experience with agile or lean development practices a plus * Able and willing to travel up to 25% for demos and installations (domestic and international) Applicants must be either a U.S. citizen, U.S. national, legal permanent resident, asylee, refugee or must be eligible to apply for and obtain the appropriate export control license from the U.S. Departments of State or Commerce. ## Description Teledyne FLIR is looking for a career Software Engineer to join our Surveillance team who has industry experience leading complex projects independently from inception to completion. This team, along with a sibling location in Victoria, BC, is focused on delivering military grade software and hardware solutions in the defense and border security markets. With a 20 plus year history of delivering successful projects, this small team of developers has built a diverse customer base which includes some of the biggest governmental organizations and global companies. As defense and security needs continue to grow, the future is looking good and we are looking for strong software professionals to join us. This position focuses heavily on the Microsoft platform with a focus on .NET server-side technologies with some desktop skills as well. This opportunity is for a professional who has skills and proven ability to lead software initiatives, yet still write code to stay current because that is, * Design, build, and maintain high-quality software for defense and border security applications * Collaborate with developers, QA, product managers, and project leads * Lead software initiatives while staying hands-on with coding * Solve challenging technical problems across server-side and desktop platforms * Develop and optimize client-server and distributed systems * Implement multi-threaded and asynchronous programming patterns * Work with internet protocols (HTTP, TCP, UDP, SSL) and video streaming * Communicate clearly with stakeholders and team members * Participate in testing and resolving software defects ## Related Videos - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Your next 10x engineer isn't in your city. Refactor accordingly.](https://www.wearedevelopers.com/videos/100103-your-next-10x-engineer-isn-t-in-your-city-refactor-accordingly) - [Introducing JSON Structure](https://www.wearedevelopers.com/videos/100219-introducing-json-structure) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers)