Senior Software Engineer

The job

LIVE Live feed (private-sector employer) Source: The Muse public API · Data: listed 2026-11-06

Job description

Description

Lead Technology Behind a Mission That Matters

Great software engineering is about more than writing code, it's about solving difficult problems, making smart technical decisions, and building capabilities people can depend on. Leidos is seeking an accomplished Senior Software Engineer to join the Chinook Program supporting an Intelligence Community (IC) customer and an application with direct national security impact.

As a Senior Software Engineer, you'll be a key technical leader, shaping software architecture, solving complex engineering challenges, and helping drive the evolution of critical application capabilities. You'll remain hands-on while influencing technical direction, mentoring engineers, and collaborating with architects, systems engineers, DevSecOps, test professionals, and mission stakeholders.

The Senior Engineer is responsible for complex software development, technical design, integration, troubleshooting, and engineering leadership. You'll take ownership of significant technical areas and provide technical direction to other engineers while remaining hands-on with development.

Position may be performed in the following locations below.

•Tucson, AZ

•Gaithersburg, MD

•Alexandria, VA

•Chantilly, VA

•Englewood, CO

•St. Louis, MO

Clearance Level Required:

Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.

Primary Responsibilities:

•Lead the design, development, integration, testing, deployment, and sustainment of a software application that supports our customer's GEOINT mission.

•Translate mission, systems, and technical requirements into scalable software solutions.

•Lead technical design for application components, services, APIs, and integrations.

•Develop and maintain high-quality production software.

•Design and implement scalable backend services and modern web applications.

•Evaluate architectural approaches and recommend solutions based on mission and technical requirements.

•Develop and integrate RESTful APIs, microservices, and data services.

•Design and optimize database schemas, queries, and data-access strategies.

•Troubleshoot complex application, integration, performance, and production issues.

•Lead root-cause analysis for significant technical problems.

•Develop automated unit, integration, and system-level testing strategies.

•Support CI/CD, DevSecOps, cloud, and containerized environments.

•Identify and address technical debt, reliability issues, scalability limitations, and security concerns.

•Serve as a Scrum Master for an Agile software development team, facilitating sprint planning, daily standups, backlog refinement, sprint reviews, and retrospectives.

•Partner with Product Owners and development team members to manage sprint priorities, remove impediments, and support the timely delivery of high-quality software capabilities.

•Promote Agile best practices, foster team collaboration, and drive continuous improvement in sprint execution, team efficiency, and software delivery.

•Provide mentorship and guidance to junior engineers.

•Collaborate closely with Test Engineering, DevSecOps, Systems Engineering, Security, and mission stakeholders.

•Support production releases and operational troubleshooting.

•Evaluate emerging technologies and determine their applicability to mission needs.

•Contribute to technical documentation, engineering standards, and development roadmaps.

Basic Qualifications:

•US citizenship is required per contract.

•Bachelor's degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience. May possess a Doctorate in technical domain. Equivalent experience may be considered in lieu of degree.

•Proficiency with the following technologies:

oWeb: HTML, CSS, JSON, Ajax, and REST APIs

oObject-oriented Programming: Python, Java, or JavaScript

oFront-end and Back-end Frameworks: React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte

oCloud Development: AWS, Azure, or similar cloud platforms

oRelational Database: MySQL, PostgreSQL, or SQL Server

oOperating System: Windows, Linux

oVersion Control System: Git

•Strong experience with software architecture and application design.

•Strong experience developing APIs, services, and/or distributed applications.

•Strong database development and data-modeling experience.

•Experience with modern DevSecOps and CI/CD practices.

•Experience troubleshooting complex production and integration issues.

•Experience serving as a Scrum Master or performing Scrum Master responsibilities within an Agile software development team.

•Demonstrated understanding of Agile methodologies, Scrum ceremonies, sprint planning, backlog management, and iterative software delivery.

•Experience using Agile project management tools such as Jira and Confluence to track sprint progress, manage work items, and support team collaboration.

Preferred Qualifications:

•Experience supporting Intelligence Community (IC) mission systems.

•Certified ScrumMaster (CSM), Professional Scrum Master (PSM), or equivalent Agile certification.

•Experience balancing hands-on software engineering responsibilities with Scrum Master duties on a cross-functional Agile team.

•Experience using Agile metrics, including sprint velocity, burndown charts, and cycle time, to identify opportunities for improved team performance.

•Experience with geospatial, intelligence, or other mission-specific data and workflows.

•Experience with AWS and cloud-native architectures.

•Experience with Infrastructure-as-Code (Terraform, Ansible, CloudFormation).

•Experience with GitLab CI/CD, Jenkins, SonarQube, Nexus, Vault, or Keycloak.

•Experience with PostgreSQL, MySQL, SQL Server, OpenSearch/Elasticsearch, or similar technologies.

•Experience with event-driven architectures and messaging technologies.

•Experience with observability, monitoring, logging, and application performance management.

#Chinook

#NSBA

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:
October 15, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $107,900.00 - $195,050.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Explore around this job

Field: Technology Sub-niche: Software engineering All jobs at Leidos Jobs in Arizona Jobs in Tucson, AZ Tucson city guide Arizona state guide Pima County economy

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About the role

This is a Senior Level role in the Technology field (Software engineering) at Leidos. Senior roles usually expect substantial experience, ownership of results and often the ability to guide others.

We could not match this job title to one occupation in the official wage statistics, so no pay estimate is shown. Pay is not in the source listing; ask the employer for the range and compare in the 240 job niches.

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How to prepare and behave

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• Read the whole description and match your examples to its requirements; use the same words the posting uses where they are true for you.
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• Arrive early (or log in early for a video call), dress one step above the daily dress code, and test your camera and audio beforehand.
• Answer with short stories: the situation, what you did and the result. Give numbers when you have them and never invent them.
• Be honest about gaps; say what you did to learn and how fast you can close them.
• Ask about the team, the first 90 days, how success is measured and the schedule; do not open with salary and time off.
• When pay comes up, know the market range for the occupation and your lowest acceptable offer before you answer; ask for the full package in writing.
• Send a short thank-you message within a day, mentioning one thing you discussed.
• Have code, data work or projects you can show, and be ready to think aloud: many technical interviews test how you reason, not only the answer.

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• U.S. Equal Employment Opportunity Commission: prohibited employment practices
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The city

The job is in Tucson, AZ. Below is what the official statistics say about living and working there.

How Tucson compares. Among the 80 largest places in Arizona, Tucson is #2 by population, #76 for homeownership (#1 = highest), #71 for household income (#1 = highest), #14 for long commutes (#1 = fewest). Its county, Pima County, is #3 of 15 counties for average pay ($61,936).

The place in numbers

Tucson has 547,073 residents (ACS 2020–2024), about 7.4% of the population of Arizona. It covers 242 square miles of land, which works out to roughly 2,259 people per square mile. The median age is 34.6, 11% younger than the state median (34.6 against 39.0).

Housing

The median gross rent is $1,145 a month (rent plus utilities), 26% below the state median ($1,145 against $1,543). Over a year that is 24.1% of the median household income. US housing guidance treats housing as affordable when it takes 30% of income or less, so the typical household is under that line. The median home value is $266,200, which is 4.7 times the median household income ($57,073). 51.9% of households own their home, 23% below the state average (51.9% against 67.4%). A low ownership share points to a rental-heavy market with more apartments and shorter stays.

Work and pay

The Tucson, AZ metropolitan area has 389,630 jobs in the BLS wage survey, and the median pay across all occupations is $47,760 a year, 6% below the national median ($47,760 against $50,980). The biggest occupation groups are office and administrative support (46,550 jobs, median $44,920); food preparation and serving related (36,210 jobs, median $34,990); sales and related (33,700 jobs, median $36,070). The area is most specialised in architecture and engineering (1.5 times) and protective service (1.3 times), where the share of workers is above the national share. The best-paying groups with at least 5,000 jobs are management ($100,780) and computer and mathematical ($97,560). In 2026M09 the unemployment rate of Pima County was 4.8%. 60.7% of residents aged 16 and over are in the labour force. The city lies in Pima County; its jobs, pay by industry and GDP are on the county page.

Getting around

Among workers, 68.0% drive alone, 2.3% use public transit, 2.6% walk, 13.8% work from home. 7.9% of workers commute 45 minutes or more, 45% below the state average (7.9% against 14.2%).

People and education

31.1% of adults aged 25 and over hold a bachelor's degree or higher, 7% below the state share (31.1% against 33.3%). 13.4% of residents were born outside the United States, 4% above the state share (13.4% against 13.0%). The poverty rate is 18.9%, 51% above the state rate (18.9% against 12.5%).

Climate

The warmest month is Jun, averaging 82°F (27.5°C), and the coolest is Dec at 45°F (7.4°C). About 323 mm (13 inches) of precipitation falls in a year; Jul is the wettest month (82 mm) and May the driest (4 mm). These values come from NASA satellite-based climatology on a grid of about 50 km, so they describe the wider area, not a weather station in the city.

Nearby cities to compare

Closest cities in this guide: Catalina Foothills (10 miles, rent 23% higher); Drexel Heights (10 miles, rent 17% higher); Tanque Verde (11 miles, rent 18% higher); Flowing Wells (13 miles, rent 10% lower). Rent differences are against Tucson; use the Compare tab to put any two cities side by side.

Full guide to Tucson →Arizona guideAll jobs in Tucson

Official links for Tucson

• Official website of Tucson: tucsonaz.gov
• Census Bureau data profile for Tucson
• Official state website: az.gov
• BLS Economy at a Glance: Arizona

These links go to official sources and open in a new window. The first one is the government's or company's own site as listed in Wikidata (property "official website"); check it before relying on it.

Where to live

The job city has no coordinates we can place on the map, so no housing comparison is shown. Use the 250 largest cities table to compare rent and income.

Career paths

We could not match this title to one occupation, so here are the other sub-niches in Technology, where your skills may carry over:

Cybersecurity (366) Data, analytics and AI (1991) Cloud, IT and infrastructure (504) Product management (412)

Distances

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The employer

Leidos is the employer in this listing. See all its open jobs here →

Company description (from The Muse): Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.

size: Large Size; industries: Information Technology; locations on The Muse: Reston, VA.

It is among the 200 largest US-headquartered employers in our list, with about 47,000 employees worldwide (year not stated). Company page with headquarters, state economy and official links →

Official links for Leidos

• Official website of Leidos: leidos.com
• SEC EDGAR: company filings search
• Official state website: virginia.gov

These links go to official sources and open in a new window. The first one is the government's or company's own site as listed in Wikidata (property "official website"); check it before relying on it.

The employer's profile on The Muse →

What it is like to work at a company (culture, schedules, benefits) is not in the source data, so we do not describe it. Read the description and ask the questions under "How to prepare".

Other open jobs at Leidos

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Same sub-niche: Software engineering

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FAQ

What is the Senior Software Engineer job at Leidos?

A senior level role in technology (software engineering) listed 2 days ago. The full description is on this page and on The Muse.

Where is this job?

Tucson, AZ.

How do I apply?

Use the "View this job and apply on The Muse" button. AtiveSite does not receive applications.

How much does it pay?

The listing does not publish pay, and we could not match the title to one official occupation.

What is the cost of living there?

Median rent in Tucson is $1,145 a month and median household income $57,073 (ACS 2020–2024).

How old is this listing?

It was posted on 2026-11-06 (2 days ago). Jobs older than 90 days are not shown.

Are there similar jobs?

Yes: browse software engineering jobs in Arizona.

Sources and terms

• Job data: The Muse public API (listing dated 2026-11-06). The job disappears from this site when it disappears from the source.
• Wages and projections: BLS OEWS (May 2025) and Employment Projections 2025–35.
• City and county figures: Census Bureau ACS 2020–2024, BEA, BLS QCEW and LAUS, NASA POWER climatology; distances from Census Gazetteer coordinates.

AtiveSite is not affiliated with or endorsed by The Muse, the employer or any government agency, and does not process applications. Verify every detail with the employer before acting.

Sources

• BLS OEWS (wages and employment by occupation, May 2025)
• BLS Employment Projections 2025–35
• BLS Local Area Unemployment Statistics
• BLS JOLTS
• BLS State and Metro Area Employment
• Census Bureau American Community Survey (via Census Reporter)
• BEA GDP by state and Regional Price Parities
• IRS 2026 tax adjustments
• U.S. Department of Labor, minimum wage by state
• Tax Foundation state income tax rates 2026
• USAJOBS
• USCIS
• U.S. Department of State, visas
• NASA POWER climatology
• GeoNames / Census Gazetteer (coordinates)