28 sr security software engineer jobs at 17 companies in Clayton, DE
2mo
Save
Mark Applied
Hide
Sr Software Developer
Annapolis Junction or Columbia
$174k-$220k/yr OnsiteFull Time
20+ YOEActive security clearance with FS Poly; 20+ years as a software engineer in similar scope, or 4+ years of experience
Java, PostgreSQL, Database design, RESTful API, Docker, Power BI, Python, Power Query M, MariaDB, Elasticsearch
2w
Save
Mark Applied
Hide
Blockchain - Sr Lead Security Engineer
Plano or Seattle or Wilmington or Columbus or Jersey City or Palo Alto
$171k-$260k/yr OnsiteFull Time
7+ YOEBachelor's in CS or related,7+ years software development with ≥2 years blockchain experience, strong Java/Python skills, blockchain fundamentals, cryptography (MPC,TSS,DKG,ECDSA,EdDSA), AWS, containers, infra-as-code, API and security best practices.
Java/J2EE, Python, Spring Boot, Flask, FastAPIS, Multi-Party Computation (MPC), ECDSA, EdDSA, BIP-32/BIP-44, AWS EC2, AWS EKS, AWS Lambda, AWS S3, AWS RDS, AWS IAM, AWS SQS, AWS SNS, API Gateway, AWS KMS, Terraform, CloudFormation, Docker, Kubernetes, Oracle, PostgreSQL, DynamoDB, MongoDB, Redis, Datadog, Dynatrace, Splunk, Grafana, Prometheus, Jenkins, GitHub Actions, Spinnaker, GitHub Copilot, Claude Code, OAuth 2.0, JWT, TLS, mTLS
2mo
Save
Mark Applied
Hide
Software Engineer - Senior (contingent 045)
Aberdeen Proving Ground, Maryland, United States
OnsiteFull Time
7+ YOESenior software engineer with DoD experience, specializes in biometric systems, secure coding, and Agile/DevSecOps.
Android, CI/CD, DevOps, DevSecOps, Security, Encryption
2mo
Save
Mark Applied
Hide
Software Engineer - Senior (contingent 045)
Aberdeen Proving Ground, Maryland, United States
OnsiteFull Time
Systems Products and Solutions: Provides logistics and technical services to defense agencies.
7+ YOESenior software engineer with DoD biometric systems experience; security clearance required; Agile/DevSecOps; Android apps; cybersecurity.
Android, DevOps, DevSecOps, CI/CD, Security testing, Encryption
4w
Save
Mark Applied
Hide
Senior Software Engineer
Aberdeen, Maryland, United States
$90k-$198k/yr OnsiteFull Time
10+ YOE10+ years software engineering experience in Defense, BA/BS or equivalent experience, proficiency with C++, Java, Python, C#, secure coding and Defense standards, DoD cybersecurity certification preferred.
C++, Java, Python, C#, Git, SVN, CI/CD, automated testing tools
3mo
Save
Mark Applied
Hide
Software/Data Engineer
Laurel, Maryland, United States
$176k-$282k/yr OnsiteFull Time
19+ YOEBachelor's degree in Engineering, Computer Science, Mathematics, or related field with extensive software engineering experience; cloud, Linux, Python; active TS/SCI with poly; ability to work at a customer site.
OpenStack, Linux, Python, PowerShell, Cloud Security
1mo
Save
Mark Applied
Hide
Lead Software Engineer
Newark, Delaware, United States
$128k-$201k/yr OnsiteFull Time
6+ YOE6+ years software engineering experience building cloud and edge systems; experience in regulated environments, secure development practices, QMS familiarity, AI integration, Agile and version control proficiency; degree in CS/SE/STEM.
Microsoft Azure, Google Cloud Platform (GCP), Agile
1mo
Save
Mark Applied
Hide
Radio Services Software Engineer
Aberdeen Proving Ground, Maryland, United States
$150k-$174k/yr OnsiteFull Time
10+ YOEBachelor's in CS/SE (or equivalent experience), 10+ years software engineering with 3+ years on DoD communications, proficiency in C++, Java, or Python, secure coding and networking protocols knowledge, active DoD Secret clearance.
C++, Java, Python, VENOM, Agile, DevSecOps
1mo
Save
Mark Applied
Hide
Experienced Software Engineer
Hazelwood or Plano or Oklahoma City or Ridley Park
$127k-$171k/yr OnsiteFull Time
5+ YOEBachelor's degree, 5+ years full-stack software development, 1+ year cloud experience (AWS/Azure/GCP), experience with SDLC and architecture frameworks, and ability to obtain U.S. security clearance (U.S. citizenship required).
AWS, Azure, GCP, CodeVue
2mo
Save
Mark Applied
Hide
Principal Software Engineer, Field Engineering
Aberdeen Proving Ground, Maryland, United States
$160k-$220k/yr OnsiteFull Time
5+ YOE5+ years hands-on software engineering; active Secret clearance; backend Go/Java/Rust; DevSecOps; Kubernetes; Bash/Python; Army-domain knowledge; customer-facing; Security+ readiness; willing to relocate to APG.
Go, Java, Rust, Kubernetes, Helm, CI/CD, Infrastructure as Code, Bash, Python, RMF
1mo
Save
Mark Applied
Hide
Experienced Software Engineer
Hazelwood or Plano or Oklahoma City or Ridley Park
$127k-$171k/yr OnsiteFull Time
5+ YOEBachelor's degree or equivalent, ability to obtain U.S. security clearance (Secret), 5+ years full stack development and SDLC/architecture experience, 1+ years cloud (AWS/Azure/GCP), strong communication and leadership.
AWS, Azure, GCP, CodeVue
1w
Save
Mark Applied
Hide
Senior Software Developer (Low Code/ No Code)
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
5+ YOEUS citizen with active Secret clearance; bachelor’s degree with 5 years' software experience or 8 years' experience; proficiency in multiple programming languages; low code/no code integration experience; CI/CD and secure integration skills.
Python, C++, Java, C#, Go, Docker, Kubernetes, REST APIs
1mo
Save
Mark Applied
Hide
Information Security Engineer, Senior
Belcamp, Maryland, United States
$78k-$176k/yr OnsiteFull Time
7+ YOE7+ years experience in configuration management, CM plan writing, design reviews, and software change audits; knowledge of DevSecOps and CM tools; TS/SCI clearance; bachelor's degree in a STEM field.
JIRA, puppet, Confluence, Git Hub
2w
Save
Mark Applied
Hide
Security Consultant
Chantilly or Bowie or Baltimore
$89k-$148k/yr HybridFull Time
5+ YOEDesign and specification of electronic security systems, 5+ years security consulting experience preferred, Autodesk Revit proficiency, ASIS PSP (or obtain within 6 months), Software House C-Cure 9000 training, strong project management and communication skills.
Autodesk Revit, BST, PLC
2w
Save
Mark Applied
Hide
Pre-Award: Engineer, General III
Aberdeen, Maryland, United States
OnsiteFull Time
10+ YOEActive DoD Top Secret/SCI clearance, Bachelor's in Aerospace required, 10+ years experience, expertise in CAD/FEA/CFD, software development, and secure knowledge management across NIPRNet/SIPRNet/JWICS.
CAD, FEA, CFD, NIPRNet, SIPRNet, JWICS
1w
Save
Mark Applied
Hide
Artificial Intelligence Security Specialist USA
New York or New Castle or Tampa or Jacksonville or Fort Lauderdale or Irving or Jersey City
$109k-$265k/yr HybridFull Time
5+ YOEExperience in AI/ML engineering, security research, or software engineering; hands-on LLM/agent experience, vulnerability research, Python proficiency, threat modeling (STRIDE, ATT&CK); bachelor’s or equivalent; 5+ years preferred.
Artificial Intelligence (AI), LLMs, Python, STRIDE, ATT&CK
1mo
Save
Mark Applied
Hide
Assistant Vice President, Cyber Security
Wilmington, Delaware, United States
HybridFull Time
6+ YOE2+ Mgmt6+ years cybersecurity/cloud or software engineering experience, 2+ years in a senior/lead security role; AWS and cloud-native security, IAM, encryption, Terraform/CloudFormation, CI/CD security, SOC 2/PCI DSS experience; relevant security certs preferred.
AWS, AWS IAM, VPC, KMS, Security Hub, GuardDuty, CloudTrail, OAuth2, JWTs, mTLS, Terraform, CloudFormation, CI/CD, SAST, DAST, dependency scanning, SOC 2, PCI DSS, OWASP Top 10, API Security Top 10
2mo
Save
Mark Applied
Hide
Senior Android Developer – Banking Applications
Wilmington, Delaware, United States
$107k-$178k/yr HybridFull Time
3+ YOE5+ years Android development with Java/Kotlin; banking/fintech experience; secure mobile development; testing frameworks; collaborative team player.
Java, Kotlin, Android, Jetpack Compose, Espresso, JUnit, Mockito, CI/CD, DevOps, Secure coding
1mo
Save
Mark Applied
Hide
Lead .Net Platform Engineer (Payments Ingestion) - Senior Vice President
New Castle or Irving
$156k-$234k/yr HybridFull Time
10+ YOE10+ years .Net experience, microservices, Kafka, Oracle/MongoDB, cloud-native (OpenShift/AWS), Kubernetes/Docker, CI/CD (Jenkins, Gradle/Maven), JVM performance tuning, API design, secure engineering, Agile/SAFe. Bachelor's required; Master's preferred.
.Net, REST APIs, Spring MVC, Spring Boot, Kafka, Oracle, Microsoft SQL, MongoDB, OpenShift, AWS, Kubernetes, Docker, CI/CD, Jenkins, Gradle, Maven, Grafana, GitHub Copilot, LLMs, Gemini, JVM, Python, Pinecone, Weaviate, LangChain, AutoGen, COBOL, Assembler, C++, React