Jobs in the United States

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Added 2 mins ago
Energy Manager
US AMR-Jones Lang LaSalle Americas, Inc.
Remote, United States
Provide technical training and/or mentor more junior colleagues
Added 4 mins ago
W
Cyber Broker - NA FINEX
WTW
New York, NY · NY · Chicago, IL
- $110,000 to $170,000 USD / year
Mentor and support junior team members as appropriate.
Added 5 mins ago
Senior OCT Test and Verification Engineer
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Murray Hill, NJ
…engineering team and external packaging vendors, and train junior engineers in design control test practice. It is well-suited to someone who has taken OCT products through design…
Added 5 mins ago
Manufacturing Science and Technology Process Engineering Co-Op
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Preference for students entering their junior or senior year, with a strong foundation in core scientific and engineering principles.
Added 5 mins ago
Supervisor, Facilities Engineering
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Provide direct supervision and leadership to the Project Engineers, Validation Engineers, and Junior Mechanics, including performance management, coaching, and development. Promote a…
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Operator Lead, Production
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Parsippany, NJ
- $15.92 USD / hour
Provide mentorship, training, and guidance to junior, intermediate, and senior operators. Impart expert knowledge on aseptic techniques, equipment handling, process optimization, and…
Added 5 mins ago
Innosight Consulting Senior Associate, Strategy & Operations
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Coach and mentor junior team members by providing guidance, feedback, and quality review of work products.
Added 5 mins ago
Learning Technology Manager
Accenture
Morristown, NJ
…and learning technology workstreams with rigor, developing junior talent, and producing work that earns repeat trust. You're confident engaging senior stakeholders and comfortable operating…
Added 5 mins ago
A
Contracting Counsel Manager
Accenture
Morristown, NJ
- $94,400 to $293,800 USD / year
…transactions and understanding of the larger market. Manage and advise junior legal professionals in transactions and related matters. Act, and continuously evolve as, a knowledgeable and…
Added 6 mins ago
OSU Program Coordinator
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Provide mentorship or task guidance to junior staff or project resources assigned to the program.
Added 6 mins ago
ASC Program Coordinator
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Provide mentorship or task guidance to junior staff or project resources assigned to the program.
Added 6 mins ago
Treasury Operations & Reporting Analyst
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This junior-level position will assist with the preparation, consolidation, and verification of cash management reporting, interest accrual tracking, daily loan funding availability, and…
Added 6 mins ago
Model Risk Audit Manager
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Added 6 mins ago
Staff Full-stack Engineer - Shopping (Remote-eligible)
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Serve as a force-multiplier for the team, balancing deep, hands-on technical contribution and innovation with mentoring and elevating the skills of peers and junior engineers.
Added 6 mins ago
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Senior Applied Scientist
Oracle
Trenton, NJ
- $113,000 to $234,600 USD / year
Lead and mentor both junior and senior applied scientists.
Added 6 mins ago
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Added 6 mins ago
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…process(es). Uses functional and organizational knowledge to mentor junior…
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- $105,050 to $149,700 USD / year
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Product Manager - Technical
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Provides guidance and mentorship to junior product team members, fostering a collaborative and high-performing culture.
Added 6 mins ago
Nurse Apprentice Program (NAP) - Days/Nights
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Must be a Junior or Senior in a nursing program (or equivalent clinical phase)
Added 6 mins ago
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Marketing Junior Copywriter
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- $70,000 USD / year
As a Junior Copywriter at Fjällräven, you will help shape how our brand speaks to the world. Working closely with the Associate Creative Director and broader Creative and Marketing Teams,…
Added 7 mins ago
Engineer I – ESTE Systems Engineer
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Added 7 mins ago
Junior Quantitative Investment Engineer
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We are looking for a Junior Quantitative Investment Engineer who has a passion for data, technology, automation, and an understanding of finance to join our Quantitative Investment Science…
Added 8 mins ago
Enterprise AI/Senior Principal-Data and Analytics -Business Consulting
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Mentor junior team members, fostering a culture of continuous learning and professional growth.

Fidelity Technology Group, LLC

Principal Mobile Developer

Westlake, TX, United States

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Job details

Apply by: Dec 15, 2026
Posting language: English
Posted: Nov 4, 2026

Original job description

Fidelity will not provide immigration sponsorship for this position.

Job Description:

Position Description:

Develops and enhances full stack web applications and native mobile applications using Test Driven Development (TDD) and automated testing to ensure stability, resilience, and strong code coverage. Builds native iOS applications using Swift and SwiftUI, and native Android applications using Kotlin and Compose. Designs and implements scalable back-end services, RESTful Application Programming Interface (APIs), and microservices architecture. Executes end-to-end releases with automated Continuous Integration/Continuous Delivery (CI/CD) pipelines using Jenkins and platform specific tooling for web and mobile deployments. Works with architecture, security, and User Experience (UX) design teams to deliver compliant, accessible, and user friendly solutions aligned with Web Content Accessibility Guidelines (WCAG), Apple Human Interface Guidelines, and Material Design. Supports efficient engineering practices, including trunk-based development, feature toggles, and branch by abstraction, using CI/CD and testing tools. Develops back-end systems using cross platform knowledge, API design, and security best practices including OAuth (Open Authorization) and OpenID Connect, and Amazon Web Services (AWS) Elastic Compute Cloud (EC2), Lambda, DynamoDB, and Simple Storage Service (S3). Applies engineering best practices and security standards to ensure quality, maintainability, and compliance.

Primary Responsibilities:

Designs, develops, and maintains full-stack features across back-end and native mobile platforms (iOS and Android).
Coordinates end-to-end feature development from concept through production deployment, taking ownership of technical decisions across the entire stack.
Builds and maintains scalable microservices and RESTful/GraphQL APIs that support web and mobile application functionality.
Develops comprehensive documentation for multiple applications or subsystems.
Plans and coordinates project schedules and assignments for multiple technology initiatives.
Advises on risk assessment and risk management strategies for engineering projects.
Provides technology solutions to daily issues and delivers technical evaluation estimates for upcoming initiatives.
Mentors junior team members.
Contributes to technical roadmap planning and advises senior management on technical strategy.
Monitors application performance, troubleshoots issues, and implements optimizations across the technology stack.
Researches and evaluates advancements in self-custody crypto wallet encryption to inform design decisions, enhance security controls, and ensure alignment with emerging standards.

Education and Experience:

Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and five (5) years of experience as a Principal Mobile Developer (or closely related occupation) developing native mobile applications for iOS and Android and integrating them with back-end APIs, within an Agile and DevOps environment.

Or, alternatively, Master’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and three (3) years of experience as a Principal Mobile Developer (or closely related occupation) developing native mobile applications for iOS and Android and integrating them with back-end APIs, within an Agile and DevOps environment.

Skills and Knowledge:

Candidate must also possess:

· Demonstrated Expertise designing scalable backend services and microservices architecture using Node.js, NestJS, or GraphQL; and building RESTful or GraphQL APIs with authentication and authorization mechanisms (OAuth and OpenID Connect) that support web or mobile experiences, while ensuring security, performance, and maintainability across distributed systems. · Demonstrated Expertise performing native iOS mobile application development and testing using XCUITest, XCTest, Swift, SwiftUI, Objective-C, UIKit, and reactive programming with Combine, within mobile specific VIPER or MVVM architecture patterns, and in alignment with Apple Human Interface Guidelines and the full App Store application lifecycle and release process. · Demonstrated Expertise performing native Android mobile application development and testing using Espresso, JUnit, Kotlin, Compose, Java, XML layouts, and reactive programming with Coroutines, within Clean Architecture patterns and in an environment that supports the full application lifecycle and release process for the Google Play Store; and creating performant and accessible user experiences aligned with Material Design Guidelines and Google Play guidelines. · Demonstrated Expertise performing technical solutioning, implementation support, and code review activities using backend and mobile development technologies, peer mentorship practices, estimation and requirement-refinement tools, and cross-functional collaboration methods within an Agile environment that includes sprint planning, iterative development cycles, coordination with product managers and stakeholders across multiple business units, and alignment between business requirements and technical execution. #PE1M2

Fidelity’s Onsite Working Model Fidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.

Certifications:

Category:

Information TechnologyPlease be advised that Fidelity’s business is governed by the provisions of the Securities Exchange Act of 1934, the Investment Advisers Act of 1940, the Investment Company Act of 1940, ERISA, numerous state laws governing securities, investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations, including FINRA, among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.

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More about this job

Skills

Test automation
Swift
Kotlin
ICT system programming
Microservices Architecture
CI/CD
Jenkins
ICT accessibility standards
API development
AWS
Amazon DynamoDB
Security regulations
Regulatory compliance
Microservices
GraphQL
Documentation
Hazard assessment
Risk management
Computer science
Computer technology
Node.js
Objective C
JUnit
Oracle Java
Mobile development
Estimating
Collaboration
Iterative development
Securities

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