Principal Software Engineer

Trident; Fairfax (VA); Hybrid; USD 120,000 - 222,000; Full time

Benefits offered by this job

Health benefits

401(k)

Tuition reimbursement

Paid time off

Holidays

Potential annual bonus

Job summary

Trident Systems seeks a Principal Software Engineer to join a fast‑paced ICS/SES team in Fairfax, VA. You will design, implement, and test Python-based software for Predictive Maintenance & Logistics and internal projects.

The role emphasizes data manipulation, interfaces with external devices and platforms, and GUI design on Linux systems. Hybrid onsite work is required with some remote capability.

Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Data Science, or equivalent and a minimum of 9 years of related experience in an agile environment.
• Experience with Python software development and maintainable production‑quality software.
• Experience with Python libraries/frameworks for data processing, APIs, and application development.
• Experience in Linux and Windows development environments.
• Familiarity with data formats such as JSON, CSV, XML, REST APIs, sockets, and message queues.
• Experience with databases like PostgreSQL, SQLite, or InfluxDB and data storage solutions.
• Experience with Git or similar revision control systems.
• Ability to troubleshoot software across applications, OS, networks, and interfaces.

Responsibilities

• Design, implement, and test software for PM&L projects and internal efforts.
• Develop software for data manipulation, storage, translation, sensor data capture, and export to platforms.
• Integrate data into standardized messaging formats and external interfaces.
• Build interfaces to databases, APIs, file data sources, and message brokers.
• Implement algorithms for data manipulation, analysis, and presentation.
• Work with Linux, Windows, and Android environments on embedded systems.
• Document development with design docs, interface control docs, and test plans.
• Support packaging, deployment, configuration management, and troubleshooting in varied environments.
• Assist with demonstrations and customer-facing engineering activities.

Skills

Python development

Linux

Windows

JSON/CSV/XML

REST APIs

Git

Troubleshooting

Education

Bachelor's degree in CS or related field

Tools

PostgreSQL

SQLite

InfluxDB

Docker

Job description

Position Title: Principal Software Engineer

Requisition ID: 1872

Position Location: Fairfax, VA (Hybrid)

Position Reports To: Manager, Software Engineering

Supervises Others: No

Trident has built a reputation as a trusted provider of aerospace and defense electronics & processing systems including digital RF & Optical command and control solutions and atmospheric & airborne sensors. Our three operating units: Space Electronic Systems (SES), Integrated C4ISR Systems (ICS) and Optical Precision Systems (OPS), develop within the agile framework which enables us to produce proven, purpose-built systems that solve our customers’ mission critical challenges across space, air, land, and sea.

Trident’s Integrated C4ISR Systems (ICS) specializes in products and services which improve the safety and survivability of our armed forces. We develop solutions for a wide range of demanding missions and environments, including tactical communications systems for multi-national interoperability, autonomous predictive maintenance and logistics solutions, and scalable, responsive, all-domain surveillance systems. Trident's integrated systems support the protection of the National Capital Region and various military installations both domestic and abroad. We can deliver innovative, high-performance solutions that meet our customers' evolving requirements by integrating our specialized knowledge in electronic systems with appropriately scaled development methodologies.

Position Summary

This position will be part of a team responsible for software design and development for Predictive Maintenance & Logistics (PM&L) projects and other internal software development efforts within the ICS Business Unit. The Principal Software Engineer will design, implement, and test software that supports data manipulation and storage, translation, sensor data capture and transmission, export of data to multiple platforms, conversion to standardized messaging formats, and graphical user interface design. The role requires development predominantly in python on Linux systems, including interaction between processors, external devices, external software interfaces, and networked systems. The employee will work as part of a fast-paced engineering team, support technical demonstrations and test events, and document development efforts through design documentation, interface control documents, user manuals, and test plans. *This role requires the employee to work onsite in Fairfax, VA a few days a week, with the ability to work from home on a hybrid basis.

Duties And Responsibilities

• Design, implement, and test custom software for condition-based maintenance and other internal projects.
• Develop software for data manipulation, storage, translation, sensor data capture, sensor data transmission, and export to different platforms.
• Convert and integrate data into standardized messaging formats and external software interfaces.
• Build and maintain software interfaces to databases, APIs, file-based data sources, message brokers, and external applications.
• Implement algorithms in software for data manipulation, analysis, and presentation.
• Develop software that operates in conjunction with external and embedded hardware/software across Linux, Windows, and Android environments.
• Document development efforts through design documentation, interface control documents, user manuals, and test plans.
• Support software packaging, deployment, configuration management, and troubleshooting in lab, field, and customer environments.
• Support technical test events, demonstrations, and customer-facing engineering activities as part of a fast-paced team.

Required Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, Data Science, or equivalent and a minimum of 9 years of related experience working in an agile environment OR 7 years with a graduate degree (or 13 total years in lieu of a degree).
• Experience with Python software development.
• Experience developing maintainable production-quality software, including modular design, error handling, logging, configuration management, and unit/integration testing.
• Experience with Python libraries and frameworks for data processing, automation, APIs, and/or application development.
• Experience working in Linux and Windows development environments.
• Experience with data formats and interfaces such as JSON, CSV, XML, REST APIs, sockets, message queues, or similar mechanisms.
• Experience with databases and data storage technologies such as PostgreSQL, SQLite, InfluxDB, object storage, or similar systems.
• Experience with software revision control systems such as Git, SVN, or similar tools.
• Ability to troubleshoot software issues across applications, operating systems, networks, and external system interfaces.

Preferred Qualifications

• Experience with condition-based maintenance, predictive maintenance, vehicle health management, telemetry, sensor data, or diagnostic systems.
• Experience with data analytics, signal processing, machine learning, or algorithm implementation in Python.
• Experience with Python web or API frameworks such as Flask, FastAPI, Django, Dash, or similar tools.
• Experience with embedded Linux, edge-compute devices, or software interaction with embedded/external hardware.
• Experience with containerization, deployment, and DevOps tools such as Docker, CI/CD pipelines, or automated build systems.
• Strong verbal and written communication skills with the ability to document technical work clearly.
• Strong team orientation and ability to work effectively in a fast-paced engineering environment.

Pay Information

Full-Time Salary Range: $120,000 - $222,000

Please Note: Actual compensation offered will be determined based on several factors including, but not limited to, relevant experience, skills, education, certifications, internal equity, business considerations, and geographic location where applicable.

Benefits

• Health benefits
  • Medical
  • Dental
  • Vision
  • Basic life with AD&D
  • Short term disability
  • Long term disability
  • Ancillary (Voluntary life with AD&D, accident, critical illness, hospital, and pet)
  • Spending accounts (HSA, FSA, and DCFSA)
• Paid time off
• Holidays
• 401(k) (including automatic company contribution)
• Tuition reimbursement
• Leaves (Parental, pregnancy, and military)
• Potential annual bonus

Trident Systems reserves the right to change or assign other duties to this position.

Trident Systems is an affirmative action and equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. To request reasonable accommodation to participate in the job application or interview process, please contact [e-mail].

Pay Transparency: The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)