• Primarily work on Front-end development, building scalable, high-performance, and well-structured applications; • Work with Micro Frontends, ensuring standardization, decoupling, and continuous evolution of solutions; • Contribute to the Back-end when needed, working on APIs, services, and integrations; • Develop and consume REST APIs integrated with an API Gateway; • Ensure code quality through best practices, design patterns, manual and automated tests; • Assume end-to-end ownership of services (development through operation), including: • Availability; • Reliability; • Security; • Scalability; • Use messaging for asynchronous communication between services; • Apply observability practices (logs, metrics, and tracing) to support system evolution and operations; • Participate in cross-team discussions, contributing to technical, architectural, security, and quality decisions; • Engage in code reviews, mentoring, and technical decision-making; • Collaborate closely with Product, DevOps, SRE, and UX teams.

• Collaborate with stakeholders to create user flows, wireframes, and high-fidelity interactive prototypes. • Develop reusable, modern UI components and front-end libraries using React.js. • Ensure every application is optimized for a seamless, accessible experience across devices. • Oversee complex data flow and storage using modern state management libraries. • Monitor front-end performance, debug intricate issues, and maintain unit and integration tests.

• Act as the primary counterpart to the client’s UX Architect to align on design system evolution, UX standards, and cross-product governance. • Lead and coordinate a pool of UI engineers across multiple project streams, ensuring high-quality implementations and technical consistency. • Drive the adoption of the design system and promote component reuse to ensure scalability across the entire application portfolio. • Review and approve UI implementations, supporting prototyping, UX flows, and interaction design decisions to meet elite usability standards. • Partner with Product, Engineering, and PM teams to define priorities and translate complex UX visions into implementable UI solutions. • Guide and mentor UI developers and junior designers, fostering a culture of technical excellence and continuous learning.

Title: Senior Angular/Flutter Developer Location: Durham United States Job Description: Job#: 3031337 Job Description: Role: Flutter Developer (6-9 month Contract-to-Hire) Location: Remote while on Contract then must relocate to Durham, NC upon conversion (position will then be 3x a week on-site and 2 days remote) you must be authorized to work in the US. We cannot provide sponsorship for this role now or in the future About the Role We are looking for a Senior Developer with strong Flutter and Angular experience to join our Patient Digital Services team. You will be working on our client's Patient mobile application - a patient-facing app used by millions of patients across the U.S. to schedule appointments, access lab results, manage insurance, and check in at our clients locations - as well as our web-based Patient Portal, an Angular SPA serving the same patient population. This is a team augmentation role. The ideal candidate will embed into an existing team, accelerate feature delivery across both mobile and web, and bring enough depth to mentor and elevate the broader team through code reviews, architectural guidance, and best practice input. Important: The contract phase can be performed remotely. However, this role is based in Durham, NC - candidates must be willing and able to relocate to or commute to Durham, NC upon conversion to a full-time position. What You Will Do - Develop and ship features on the clients Patient Flutter app (iOS and Android) - Build and maintain features on the Patient Portal Angular SPA - Collaborate with product, design, and backend engineers to deliver end-to-end patient-facing capabilities - Contribute to architectural decisions across mobile and web - Conduct code reviews and share expert-level guidance with the team - Integrate with a backend stack of Spring Boot microservices on AWS (API Gateway, ECS, Aurora PostgreSQL, DynamoDB, Lambda) - Work within an Agile delivery cadence that includes offshore team coordination What We Are Looking For - 5-8 years of overall development experience - Hands-on Flutter / Dart experience (3+ years), with shipped iOS and Android apps - Strong Angular experience (Angular 12+), including component architecture, RxJS, and state management - Experience with OAuth 2.0 / OIDC authentication flows, including PKCE and token handling - Solid understanding of iOS and Android platform nuances - deep links, universal links, push notifications, app signing - RESTful API integration experience - Comfortable working on existing production codebases, not just greenfield projects - Strong communication skills and ability to collaborate across distributed and offshore teams Nice to Have - Experience in healthcare, HIPAA-aware, or regulated data environments - Familiarity with feature flag tooling (e.g., Split.io) - Prior work on patient portals, scheduling, or insurance verification workflows - AWS-backed mobile/web app architecture experience Pay Rate is $50-70/hr Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details. Apex Benefits Overview: 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. 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, 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. 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 Apex team member can provide. Employee Type: Contract Location: Durham, NC, US Job Type: Date Posted: April 22, 2026 Pay Range: $65 - $75 per hour Similar Jobs - Angular Developer - Angular FS Developer - Senior Angular Developer - Full Stack Python/Angular Developer - Sr. Developer