Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Sr. Software Engineer

Apex Systems Inc

Job#: 3047185 Job Description: Sr. Software Engineer Location: Greenwood Village, Colorado (Hybrid) Role Overview We are seeking a Senior Software Engineer to drive the development of mission-critical mobile platform services, from device lifecycle management and provisioning to mobile account systems and carrier integrations. This role is for a senior-level engineer with previous lead experience or aspirations to become a lead. The position will evolve into a lead role over time. You will work in an agile team environment on the backend components for mobile device software. Key Responsibilities - Lead and motivate a high-performing engineering team through constantly shifting priorities. - Design, build, and maintain backend services supporting mobile device provisioning, activation, account management, and carrier integrations. - Develop RESTful APIs using both Java and NodeJS, with a future focus on migrating APIs from Java to NodeJS. - Write clean, concise code that is stable, extensible, and appropriately tested. - Provide detailed technical designs for mobile platform solutions, including API contracts and service architectures. - Diagnose complex issues across distributed mobile services, evaluate options, and execute the best resolution. - Provide technical leadership on integration activities with carrier partners and internal mobile systems. - Implement new requirements within an Agile delivery methodology while following established architectural principles. - Evaluate and integrate AI/ML capabilities into platform features and engineering workflows. - Champion the adoption of AI-powered development tools and practices across the team. Required Qualifications Education: Bachelor's degree in Computer Science, Engineering, or a related field is required. A Master's degree is preferred. Experience: - 10+ years of overall software development experience. - 8+ years of Java-specific development. - 5+ years of development team leadership experience. - 5+ years with Spring Boot. - 5+ years of web services development (REST, JSON, XML). - 5+ years with SQL databases (MySQL, Postgres). - 3+ years of cloud development, specifically with AWS and Terraform. - 2+ years with JPA/Hibernate. - 1+ years of experience with AI-powered development tools or AI/ML integration. Technical Skills: - Extensive knowledge of Java and Spring Boot for building backend mobile platform services. - Experience with NodeJS for developing RESTful APIs. - Expert-level experience with Angular 2+ or ReactJS, HTML, TypeScript, JavaScript, and CSS. - Strong experience developing and consuming REST APIs. - Knowledge of SQL databases (MySQL, Postgres) and NoSQL databases (DynamoDB, MongoDB). - Experience with Kafka for event-driven workflows. - Proficiency in cloud development (AWS CloudFormation/Terraform, EC2, S3, IAM, RDS, Lambda). - Familiarity with code management tools (Git, GitLab, Maven, JIRA). - Working experience in Agile software development with CI/CD practices. Preferred Qualifications - Experience migrating services from Java to NodeJS. - Experience with mobile carrier systems, device provisioning APIs, or telecom/MVNO integrations. - Familiarity with mobile device lifecycle management concepts (activation, provisioning, SIM/eSIM management). - Experience leveraging AI-powered development tools (e.g., GitHub Copilot, Amazon Q Developer, or similar). - Familiarity with integrating AI/ML services and APIs into mobile platform applications (e.g., AWS Bedrock, SageMaker, OpenAI). Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportuniti s, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click here {rel="noopener noreferrer" target="_blank"} for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at {rel="noopener noreferrer" target="_blank"} Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide. Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems. VEVRAA Federal Contractor. We request Priority Protected Veteran & Disabled Referrals for all of our locations within the state.

Vacancy posted 15 hours ago
Similar jobs that could be interesting for youBased on the Sr. Software Engineer in Greenwood Village, CO vacancy
  • $50 per hour

     ...SpaceBusiness Unit: SpaceStandard Job DescriptionLockheed Martin Space’s Software Product Line (SSPL) delivers reusable, high‑performance...  ...met.Basic Qualifications- 8+ Years of Professional Software Engineering with focus on CI/CD for Embedded Systems- Knowledge of Cross... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Flexible hours

    Lockheed Martin

    Littleton, CO
    3 days ago
  • $50 per hour

     ...Experienced ProfessionalFT/PT/Casual: FullTimeDepartment: SpaceBusiness Unit: SpaceStandard Job DescriptionPlans, conducts, and coordinates software development activities. Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Flexible hours

    Lockheed Martin

    Littleton, CO
    5 days ago
  • $50 per hour

     ...and prosperity.Join us in shaping a new era in space and find a career that's built for you.The Orion Program is seeking a Software Systems Engineer.In this role you will:- Apply systems engineering techniques to impact the Orion software product.- Create software... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Flexible hours

    Lockheed Martin

    Littleton, CO
    5 days ago
  • $50 per hour

     ...Lockheed Martin Whiskey Shot (WS) team is seeking an experienced Software Architect to be part of a team developing defense technology...  ...WS leads, such as the Software Integration Lead, Software Engineering Lead, Systems Engineering Lead, and WS product teams implement... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Flexible hours

    Lockheed Martin

    Littleton, CO
    2 days ago
  • $141.85k - $212.78k

     ...channels. As a global company, we have offices in nine countries and can insert advertisements around the world.Job SummaryThe Sr. Software Engineer is responsible for developing software solutions for the Ad Serving team at FreeWheel. The Ad Serving system is the backbone... 
    Senior
    Full time
    Night shift
    Weekend work

    Comcast

    Englewood, CO
    4 days ago
  • $110.3k - $204.9k

     ...to design and build solutions to some of the world’s hardest engineering problems. Come be part of a culture that inspires employees to...  ...team to help solve challenges in a team environment using your Software Engineering background and experience? This position needs an... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Work at office
    Flexible hours

    Lockheed Martin

    Littleton, CO
    5 days ago
  • $190k - $260k

     ...environment with likeminded motivated electrical engineers, mathematicians, and computer scientists...  ..., implementing them in efficient software, testing with real-world data, and deploying...  ...are the primary responsibilities in the Sr. Software Engineer position?Core... 
    Senior
    Temporary work
    Remote work
    Flexible hours

    Rincon Research

    Centennial, CO
    3 days ago
  •  ...Sr. Staff Embedded Software Engineer Location: Littleton, CO or Jacksonville, FL Overview Seeking a senior-level Embedded Software Engineer to develop highly reliable firmware for microprocessor-based systems, including SoC/SoM platforms used in aerospace/space... 
    Senior

    The Ascent Group LLC

    Littleton, CO
    2 days ago
  •  ...08125 Responsibilities: Design, develop, and maintain software solutions using Python, Node.js, and its packages and ecosystem...  ...Requirements: Bachelor's degree in Computer Science, Engineering, or related field. Recruitment Transparency Notice   Eliassen... 
    Senior
    Hourly pay
    Local area
    Work from home

    Eliassen Group

    Greenwood Village, CO
    a month ago
  • $143.49k - $197.29k

    In office Lone Tree, CO Full time R0029920 Do you enjoy developing new products and services? Join us! Our Software Engineers work in an agile, collective environment. As a Senior Software Engineer, you will be responsible for driving the strategic development and... 
    Senior
    Full time
    For contractors
    Work experience placement
    Work at office
    Immediate start
    Worldwide

    Sierra Nevada Company, LLC

    Littleton, CO
    1 day ago
  • Company DescriptionArtech is the 10th Largest IT Staffing Company in the US, according to Staffing Industry Analysts' 2012 annual report. Artech provides technical expertise to fill gaps in clients' immediate skill-sets availability, deliver emerging technology skill-sets...
    Senior
    Immediate start

    Artech

    Denver, CO
    5 days ago
  • Data Analyst - Tableau Location: Onsite - Denver Experience: Minimum 7+ years Key Skills Requirements: Advanced proficiency in Tableau for dashboard creation and data visualization Proven experience in dashboarding large-scale datasets ...
    Senior

    Yantran LLC

    Denver, CO
    3 days ago
  •  ...philosophies. This Team lead.Net Developer role will be part of an agile development group, building and working on enterprise grade software systems on top of the Microsoft.NET development stack. This individual will provide technical and team leadership through coaching... 
    Senior

    Rubix Recruiting

    Centennial, CO
    2 days ago
  •  ...experience. Code and perform unit and integration testing of software to ensure proper and efficient execution while adhering to...  ...open source technologies. Experience working with DevOps engineers to build and deploy infrastructure with cloud deployment technologies... 
    Senior
    Work experience placement

    Procyon TS

    Denver, CO
    4 days ago
  • $90k - $225k

     ...Location : Warrenton VA / Augusta,GA / Centennial, CO / State College, PA **Position Description:**We are seeking a Senior Software Engineer that possess a mix of talent areas related to full-stack development. As part of our team, you will provide software and web development... 
    Senior
    Work experience placement
    Worldwide

    Altamira Technologie

    Greenwood Village, CO
    15 hours ago
  • $150k - $180k

     ...support of mission-critical programs focused on our National Security. Role Description: Plans, conducts, and coordinates software development activities. Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions... 
    Senior
    For subcontractor
    Local area
    Flexible hours

    Navstar

    Littleton, CO
    3 days ago
  • $115k - $145k

     ...Responsibilities # Lead the design, development, and deployment of complex software solutions, ensuring scalability and maintainability. #...  ..., including product managers, UX designers, and other engineers, to translate business needs into technical solutions. #... 
    Senior
    Full time
    Immediate start
    Work from home

    Evolent

    Denver, CO
    4 days ago
  • $90k - $158.4k

     ...bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv. Job Title Senior Software Engineer About your role: At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. You... 
    Senior
    Permanent employment

    Fiserv

    Greenwood Village, CO
    15 hours ago
  • $170.6k - $261.3k

     ...collection configurations, deploys them across fleets, and monitors the resulting data from vehicle to cloud. We are seeking a Senior Software Engineer to develop the services, integrations, automation, and end-to-end observability that power this platform. Scaling high-quality... 
    Senior
    Full time
    Local area
    Remote work
    Work from home
    Relocation package
    Flexible hours

    General Motors

    Denver, CO
    1 day ago
  • DevOps Engineer needed for Eight Eleven Group, LLC located in Indianapolis, IN. Design and manage multi-account AWS environments leveraging EC2, Lambda, S3, IAM, CloudFormation, CloudWatch, EKS, and VPC for high scalability, reliability, and security across broadband workloads... 
    Senior
    Relocation

    Brooksource

    Englewood, CO
    5 days ago
  •  ...Sr. Software Engineer Anywhere Type: Permanent Category: Development Industry: Healthcare Workplace Type: Remote Standard Hours: Open Reference ID: JN -092026-108808 Date Posted: 09/28/2026 Shortcut: Description Recommended Jobs... 
    Senior
    Hourly pay
    Permanent employment
    Full time
    Local area
    Remote work

    Eliassen Group

    Denver, CO
    2 days ago
  •  ...through research and development, technology innovation or solution engineering, our team members play a vital role in connecting consumers...  ...Experience: 4 years of experience in PHP and Node.js software application developmentRequired Technical Skills: Must have at... 
    Senior
    Local area
    Flexible hours

    EchoStar

    Englewood, CO
    5 days ago
  • $107.9k - $195.05k

     ...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
    Contract work
    Local area
    Immediate start

    Leidos

    Englewood, CO
    1 day ago
  • $168.1k - $227.4k

    Application deadline: Sep 27, 2026The Platform Engineering and Emerging Technologies (PEET) team is hiring for a Senior Software Development Engineer to lead development and manage operations for AWS Managed Grafana, Managed Prometheus, Wickr, and Kinesis Video Streams!... 
    Senior
    Internship
    Flexible hours
    Night shift
    Weekend work

    Amazon

    Denver, CO
    5 days ago
  • $110k - $148.5k

     ...CoBank, you will be part of an innovative tech environment and meet real farm credit customer needs. We are seeking Full Stack Software Engineers who are passionate about building products with automation on AWS and On-prem. This role will support the Digital team in... 
    Senior
    Work at office
    Work visa
    Flexible hours

    CoBank

    Greenwood Village, CO
    3 days ago
  • $168.1k - $227.4k

     ...impacting the supply chain — and we’re looking for talented people who want to help.You’ll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles. You’ll collaborate with people... 
    Senior
    Contract work
    Internship
    Work at office
    Worldwide
    Flexible hours

    Amazon

    Denver, CO
    1 day ago
  •  ...Job Description Job Description We are seeking an experienced, Sr. Software Engineer / Architect to join our Satellite Systems team. In this integration-focused role, the candidate will assist in the integration of subcontractor-developed ground software into the government... 
    Senior
    For subcontractor
    Immediate start

    SET Development

    Denver, CO
    9 days ago
  • ## Sr. Back-end Ground Software Engineer - Lunar PermanenceApplylocations: Denver, CO: Greater Seattle Areatime type: Full timeposted on: Posted Todayjob requisition id: R68311Application close date:Applications will be accepted on an ongoing basis until the requisition... 
    Senior
    Permanent employment
    Temporary work
    Local area

    Blue Origin

    Denver, CO
    1 day ago
  • $181.63k - $254.28k

     ...building sustainable infrastructure for our transport of crew and cargo from Earth to the lunar surface. We are seeking a Senior Software Engineer to join the Lunar Apps team in the Lunar Permanence business unit. Our team is responsible for developing innovative... 
    Senior
    Permanent employment
    Temporary work
    Local area
    Immediate start

    Blue Origin

    Littleton, CO
    3 days ago
  • $50 per hour

     ...modeling, testing, etc. Proficient in AI prompting as it applies to this position and practice.Basic QualificationsBachelor’s degree in engineering, computer science, mathematics, physics, or a related technical field.Ten or more years of professional experience in artificial... 
    Senior
    Full time
    Temporary work
    Work experience placement
    Casual work
    Flexible hours

    Lockheed Martin

    Littleton, CO
    4 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Sr. Software Engineer. Be the first to apply!