40 sr java developer jobs at 22 companies in Wellington, CO
3w
Save
Mark Applied
Hide
Senior Java Software Engineer
Boulder, Colorado, United States
$131k-$167k/yr OnsiteFull Time
5+ YOEBachelor's in CS or related plus 5+ years experience or equivalent; strong Java and Spring proficiency; ability to design software systems, research algorithms, decompose requirements, and lead complex projects.
Java, Spring
1w
Save
Mark Applied
Hide
Sr Software Engineer
Lafayette, Colorado, United States
$125k-$187k/yr OnsiteFull Time
5+ YOEBachelor's degree in computer science, computer engineering, or equivalent; 5+ years with C++, C#, and Java; Linux, Windows, cloud platforms, software development, and regulated medical-device experience.
C++, C#, Java, Linux, Microsoft Windows, cloud platforms
1w
Save
Mark Applied
Hide
Sr Software Engineer
Lafayette, Colorado, United States
$125k-$187k/yr OnsiteFull Time
5+ YOEBachelor's degree in computer science, computer engineering, or equivalent; 5+ years with C++, C#, and Java; Linux, Windows, cloud platforms, OOA&D, regulated software, and change management experience.
C++, C#, Java, Linux, Windows, cloud platforms, OOA&D, AI
1mo
Save
Mark Applied
Hide
Sr AI/ML Engineer
Lone Tree or Sparks or Longmont or Hagerstown or Herndon or Englewood
$143k-$197k/yr HybridFull Time
10+ YOE10+ years experience in AI/ML with expertise in transformers, generative models, reinforcement learning, and production deployment; bachelor's in STEM or equivalent experience; proficiency in Python/C++/C#/Java and ML frameworks; ability to obtain Secret clearance.
TensorFlow, PyTorch, Python, C++, C#, Java, CUDA, TensorRT
2w
Save
Mark Applied
Hide
Sr Staff Fullstack Developer (Frontend focused)
Exton or Boulder or Huntsville or Dayton
$136k-$204k/yr OnsiteFull Time
4+ YOEBachelor's with 8 years, master's with 6, or PhD with 4; front-end and back-end development expertise, cloud deployment, web components, Git, Agile, and testing experience.
HTML5, CSS3, JavaScript, React, Angular, C#, Java, Python, Node.js, Docker, Kubernetes, AWS, Microsoft Azure, Git, Jasmine, Karma, Jest, Vitest, Ansys
2mo
Save
Mark Applied
Hide
Staff / Sr Staff C++ Software Engineer
Boulder, Colorado, United States
$100k-$146k/yr OnsiteFull Time
2+ YOEBachelor’s in physical sciences/math/engineering/CS; 2+ years C++, Linux; Agile; data structures; optimization; detail-oriented; strong communication; able to work in Boulder; DoD clearance.
C++, Linux, GitLab CI/CD, Docker, Kubernetes, Helm, Java, Python, Rust
3mo
Save
Mark Applied
Hide
Sr Software Engineer, Product Owner - Ground Software
Centennial or Louisville
$157k-$215k/yr OnsiteFull Time
8+ YOEBachelor's degree or equivalent; 8+ years experience; expert in multiple programming languages; design/architect complex software; Agile/Scrum; leadership; ability to obtain security clearance.
Python, C++, Java, Git, GitHub, GitLab, Bitbucket, CI/CD, Static analysis tools
3w
Save
Mark Applied
Hide
Sr. Principal Software Engineer - Boulder, CO
Boulder, Colorado, United States
$149k-$167k/yr OnsiteFull Time
9+ YOEExperience in Linux and software development with Python and C/C++; strong algorithm, state estimation, and data analysis skills; ability to obtain TS/SCI; willingness to travel up to 10%.
Python, C++, C, Java, Linux, grep, awk, cat, head, Git, Conan, CMake, Nexus, Bash, Jira, Confluence, Bitbucket, Atlassian Tool Suite
2mo
Save
Mark Applied
Hide
Software Dev Engineer III - AMZ9899639
Boulder, Colorado, United States
$168k-$227k/yr OnsiteFull Time
5+ YOEMaster's or Bachelor's in CS/Engineering/Math (or related) with corresponding experience; experience designing large-scale distributed systems, object-oriented design, and development in Java, C++, or C#; technical leadership and project management experience.
Java, C++, C#
3d
Save
Mark Applied
Hide
Sr. QA Automation Engineer
United States or Boulder
$120k-$135k/yr RemoteFull Time
5+ YOERequires 5+ years in QA, 3+ years with Cypress or Playwright using TypeScript or JavaScript, automated framework experience, QA strategy, AI-assisted testing, debugging, and collaboration skills.
Cypress, Playwright, TypeScript, JavaScript, Jira, Copilot, Claude Code, React, Java, Python
3d
Save
Mark Applied
Hide
Scientific Full Stack Developer
Boulder, Colorado, United States
$95k-$130k/yr RemoteFull Time
8+ YOEMaster’s degree in a relevant field and 8+ years of related experience required. Requires JavaScript frameworks, Java, Python, Node.js, databases, Docker, testing tools, Agile/Scrum, and team leadership.
Vue, React, Svelte, JavaScript, Java, Python, Node.js, Django, Microsoft SQL Server, PostgreSQL, MongoDB, Prefect, Docker, Selenium, Playwright, Drupal, Git, Agile, Scrum
4d
Save
Mark Applied
Hide
Software Engineer/Senior Software Engineer - AI Platform (Agent Runtime)
Boulder or Atlanta or Pleasanton
$156k-$234k/yr HybridFull Time
5+ YOERequires 5+ years for Software Engineer or 8+ years for Senior Software Engineer, with backend/platform systems, distributed systems, APIs, secure systems, service-oriented architecture, and Java, Go, Rust, or Python experience.
Java, Go, Rust, Python, APIs
2w
Save
Mark Applied
Hide
Senior Cloud Developer
Fort Collins, Colorado, United States
$144k-$273k/yr HybridFull Time
6+ YOE6+ years cloud development experience, bachelor’s or master’s in CS/engineering, strong programming in Python/Java/Golang/JavaScript, Kubernetes and cloud-native expertise, leadership and mentoring experience.
Python, Java, Golang, JavaScript, Kubernetes
2w
Save
Mark Applied
Hide
Senior Cloud Developer
Fort Collins, Colorado, United States
$144k-$273k/yr HybridFull Time
6+ YOEBachelor's or master's in CS/engineering, typically 6+ years cloud development experience; strong skills in cloud-native architectures, microservices, containers, Kubernetes, Python/Java/Golang/JavaScript; leadership and communication skills.
Python, Java, Golang, JavaScript, Kubernetes
3w
Save
Mark Applied
Hide
Staff Linux Software Engineer (Multiple Locations)
San Diego or Boulder
$135k-$202k/yr OnsiteFull Time
2+ YOEExperience developing Linux system software and drivers in C/C++; strong understanding of Linux internals, multi-threading, API design, SoC architecture; proficiency with git and debugging tools.
Linux, C, C++, Java, Python, git, KVM, Docker, SR‑IOV, gtest, PCIe, UML
1mo
Save
Mark Applied
Hide
Principal Cloud Developer
Andover or Houston or Durham or Fort Collins or Roseville
$152k-$349k/yr HybridFull Time
10+ YOEBachelor's in CS/engineering/IS (or related),typically 10+ years experience, strong programming in Python/Java/Golang/JavaScript, cloud security and systems design expertise, leadership and mentoring experience.
Python, Java, Golang, JavaScript
1mo
Save
Mark Applied
Hide
Senior/Staff Software Engineer
Boulder or New York City
$155k-$200k/yr HybridFull Time
Deep expertise designing and evolving distributed scalable systems, strong focus on performance/security/compliance, IaC and scripting experience (Terraform/CloudFormation, Python/Bash/Go), and leadership/mentorship skills.
Java, Kafka, Redpanda, AWS, Databricks, Datadog, ONNX, Terraform, CloudFormation, Python, Bash, Go
2d
Save
Mark Applied
Hide
Senior Data and Integration Developer
Fort Collins, Colorado, United States
$137k-$199k/yr OnsiteFull Time
8+ YOE2+ MgmtBachelor’s degree or equivalent experience, 8+ years in application or data engineering, 5+ years implementing SDLC solutions, 2+ years technical leadership, and a valid driver’s license.
Python, SQL, JavaScript, JSON, CSS, APIs, Oracle Integration Cloud (OIC), Apache Camel, IBM MQ, MuleSoft, Apigee, API Management (APIM), ERP, EAM, PCI, GIS, VPN, SSL, OAuth, PySpark, C#, Java, Microsoft Azure, Amazon Web Services (AWS), Google Cloud, Oracle Fusion, SAP, Microsoft Dynamics, Databricks, Snowflake, Microsoft Fabric, Informatica, Fivetran, Vertex AI, AWS SageMaker, Dataiku, ServiceNow, Microsoft SQL Server, Oracle, ETL, ELT, SDLC, DevOps, ITIL
2w
Save
Mark Applied
Hide
Senior Customer Solutions Engineer
Sunnyvale or Boulder or San Francisco
$152k-$221k/yr OnsiteFull Time
6+ YOEBachelor's in engineering/CS or equivalent,6+ years with client-side web tech and programming,experience troubleshooting partners,EMR not applicable; SQL/NoSQL and systems experience preferred.
HTML, CSS, JavaScript, HTTP, Java, C, C++, Python, SQL, NoSQL, Linux, Unix
3w
Save
Mark Applied
Hide
Senior Systems Engineer
Cheyenne or Gilbert
$96k-$138k/yr OnsiteFull Time
5+ YOEBachelor's degree in a technical discipline,5+ years systems engineering experience,proficiency with infrastructure-as-code,datacenter networking,DFS administration,security tooling,Python/Go/Java,and participation in 24/7 on-call duties.
Python, GoLang, Java, SALT, Chef, Puppet, Ansible, Windows, Active Directory, DNS, WSUS, IPS/IDS, XDR, network scanners