HNM Systems
HNM Systems is the leading tech-enabled professional services provider, shaping the workforce across the telecom, energy, and technology sectors. We connect specialized talent with direct hire, contract-to-hire, and consulting opportunities that support fiber expansion, digital infrastructure, wireless networks, and smart grid energy solutions. Our innovative approach delivers high-impact outcomes, with a 94% success rate in talent placement and project execution. Relentlessly people-driven, HNM Systems sets the industry standard through exceptional employee experience and long-term client value.
Why This Opportunity Stands Out
This opportunity supports innovative digital products within an established global organization known for investing in technology, collaboration, and modern engineering practices. You’ll have the opportunity to contribute as a key iOS engineering resource, influencing architecture, product delivery, and scalable mobile solutions in a highly collaborative environment. The role offers meaningful ownership, exposure to cross-functional product development, and the chance to work on consumer-facing applications that impact users at scale. For experienced mobile engineers seeking growth, autonomy, and long-term career value, this is a compelling opportunity to contribute to high-impact digital initiatives.
Overview
We are seeking a Senior iOS Developer to support the development and enhancement of enterprise-scale consumer mobile applications in a production environment. This is a front-end focused iOS engineering role requiring deep expertise in Swift and modern iOS development practices, along with strong ownership, architectural input, and the ability to operate independently on a small, highly collaborative team.
This role will contribute to the full application lifecycle, including design, development, testing, deployment, and release management, while partnering closely with Android, web, backend, product, and design teams. The ideal candidate brings strong technical depth in iOS engineering, experience working in large codebases, and the judgment to build scalable, maintainable mobile solutions..
Key Responsibilities
- Own end-to-end delivery for projects of increasing complexity, from technical design through deployment.
- Participate in the full application lifecycle including concept, design, build, deploy, test, and release management.
- Develop, maintain, and enhance high-quality iOS applications using modern development practices.
- Write clean, reusable, scalable code and apply feedback through code reviews while enforcing best practices.
- Contribute architectural input using MVVM, Clean Architecture, or similar design patterns.
- Build and support UI development using SwiftUI, UIKit, Storyboards, and XIBs as applicable.
- Support Server-Driven UI implementations and consume GraphQL-based UI integrations.
- Consume and integrate RESTful APIs using tools such as URLSession; collaborate on API contracts with stakeholders.
- Develop and maintain unit and UI test coverage using XCTest.
- Support shared codebase quality, build pipeline improvements, monitoring, and broader engineering initiatives.
- Investigate and prototype new technologies to support scalable future solutions.
- Collaborate cross-functionally with product, design, Android, web, and backend teams.
- Mentor developers where appropriate and contribute to team technical growth.
- Optimize application performance, offline storage, background processing, threading, and reusable architecture patterns.
Required Qualifications
- Bachelor’s degree in Computer Science or related technical discipline.
- 8+ years of iOS development experience preferred; 5+ years minimum for strong Mid-Level candidates.
- Strong expertise in Swift (primary language) and modern iOS front-end development.
- Experience with UIKit and SwiftUI.
- Experience with Storyboards and XIBs.
- Strong knowledge of MVVM, Clean Architecture, or similar architectural patterns.
- Experience with Server-Driven UI.
- Working knowledge of GraphQL at the UI integration level.
- Experience consuming RESTful APIs in iOS applications.
- Familiarity with URLSession, Git, and XCTest.
- Understanding of API interaction and consuming APIs (backend ownership not required).
- Experience with large codebases and shared API libraries.
- Understanding of software and mobile development lifecycle.
- Experience with Agile development methodologies.
- Strong understanding of iOS UX principles and platform guidelines.
- Experience with mocking and end-to-end API coverage.
- Strong problem-solving, communication, and architectural decision-making skills.
- Ability to work independently and thrive in a fast-paced environment.
Preferred Qualifications
- Experience with Objective-C.
- CI/CD pipeline exposure.
- AWS exposure (nice to have, not required).
- Published iOS application on the Apple App Store.
- Experience mentoring or leading other developers.
- Experience improving code review systems, monitoring, or build pipelines.
Work Environment / Additional Information
- 100% remote position within Costa Rica.
- Contract-to-hire opportunity.
- Day shift schedule.
- Small team environment where each engineer may operate as a primary iOS resource.
- Strong emphasis on ownership, autonomy, and cross-functional collaboration.
- Drug-free workplace.
- Interview process includes a technical interview followed by panel interview.
EEO / Disclaimer (Costa Rica)
The above statements are intended to describe the general nature and level of work being performed by the individual(s) assigned to this position. They are not intended to be an exhaustive list of all duties, responsibilities, and skills required. Job descriptions are subject to revision based on business needs and client requirements.
HNM Systems may utilize legally permissible background checks and other pre-employment screening processes, where relevant to the position and in accordance with applicable Costa Rican law. Any collection and processing of personal information will be handled in line with applicable privacy and data protection requirements.
Applicants must be legally authorized to work in Costa Rica and, where applicable, maintain any immigration or work authorization required for employment in the country.
HNM Systems is committed to providing equal employment opportunity and fair treatment in accordance with applicable Costa Rican law. All qualified applicants will be considered based on merit, qualifications, and business needs, without unlawful discrimination.