Full Stack Engineer

Apex Systems; Greenwood Village, Northern (CO, KY); Hybrid; USD 120,000 - 180,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

ESPP

401K with company match

HSA

EAP

Professional development

Job summary

Everforth Apex Systems is seeking a Lead Full Stack Software Engineer in Greenwood Village, CO to drive development of mission-critical mobile platform services. You will lead an engineering team, design backend services with Java/Spring Boot, and build responsive frontends using Angular or React, while collaborating with product and QA in an Agile environment.

We value hands-on leadership, strong communication, and experience with cloud AWS, REST APIs, databases, and AI/ML integration.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field. A Master’s degree is preferred.
• 10+ years of software development experience.
• 8+ years of Java development.
• 5+ years of development team leadership.
• 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 (AWS).
• 2+ years with JPA/Hibernate.
• 1+ years of AI-powered development tools or AI/ML integration.

Responsibilities

• Lead and motivate a high-performing engineering team through constantly shifting priorities, keeping the team focused, aligned, and delivering at pace.
• Design, build, and maintain backend services supporting mobile device provisioning, activation, account management, and carrier integrations.
• Write clean, concise code that is stable, extensible, and tested appropriately.
• Communicate frequently and effectively with engineers, product managers, scrum masters, and project managers.
• 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.

Skills

Java

Spring Boot

REST APIs

Team leadership

Cloud AWS

AI/ML integration

Frontend development (Angular/React)

SQL databases

NoSQL databases

CI/CD

Education

Bachelor's degree in Computer Science or related field

Master's degree preferred

Tools

Kafka

Git

Terraform

CloudFormation

Maven

JIRA

Job description

Full Stack Engineer

Location: Greenwood Village, Colorado (Hybrid)

Role Overview

We are seeking a Lead Full Stack 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. In this role, you will work in an agile team environment where professional respect and communication are key. This position requires a creative problem solver who is resourceful in getting things done and productive working independently or collaboratively.

Key Responsibilities

• Lead and motivate a high-performing engineering team through constantly shifting priorities, keeping the team focused, aligned, and delivering at pace.
• Design, build, and maintain backend services supporting mobile device provisioning, activation, account management, and carrier integrations.
• Write clean, concise code that is stable, extensible, and tested appropriately.
• Communicate frequently and effectively with engineers, product managers, scrum masters, and project managers.
• 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. 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 (AWS).
• 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.
• Expert-level experience with Angular 2+ or ReactJS, HTML, TypeScript, JavaScript, Node.js, and CSS.
• Strong experience developing and consuming REST APIs.
• Knowledge of SQL databases (MySQL, Postgres) and NoSQL databases (DynamoDB, MongoDB, Neo4J).
• Experience with Kafka for event-driven workflows.
• Proficiency in cloud development (AWS CloudFormation/Terraform, Elastic Beanstalk, 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 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 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.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [e-mail] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems.