Senior Developer - Information Technology

MainframeMaster; Houston (TX); Hybrid; USD 112,000 - 147,000; Full time

Job summary

United Airlines is seeking a Senior Developer to advance the Ticketing Platform from mainframe legacy to cloud-native, AI-assisted solutions. You will lead design, API contracts, and distributed systems while guiding teams across Product, Architecture, and Platform Engineering.

The role emphasizes mentorship, cross-functional collaboration, and delivering scalable, secure backend services on AWS, with modern CI/CD practices and a strong focus on quality engineering.

Qualifications

• Bachelor's degree in CS, engineering, or related field.
• 3+ years of software development experience.
• Experience with C# and .NET Core.
• Experience designing distributed systems and microservices.
• Experience modernizing mainframes to cloud-native.
• Experience with Solace, Kong, AWS, and CI/CD tools.
• Familiar with Agile/SAFe and Jira/Confluence/Azure DevOps.
• Ability to mentor developers.

Responsibilities

• Lead design phases and AI agent integration translating PRDs into implementation specs for microservices.
• Architect and oversee end-to-end development of cloud-native backend solutions.
• Decompose legacy mainframe ticketing into scalable services and APIs.
• Define API contracts, security standards, and routing through Kong.
• Design scalable AWS infrastructure and CI/CD pipelines with GitHub Actions and Harness.
• Mentor engineers and drive technical excellence across teams.
• Collaborate with Product, Architecture, EQE, and Platform Engineering groups.
• Communicate complex concepts clearly to technical and non-technical audiences.

Skills

C# development

.NET Core

Microservices

API-first architectures

Agile/Scrum

Leadership / mentoring

AI-assisted development

Education

Bachelor's degree in Computer Science or related field

Tools

Solace

Kong API Gateway

AWS

GitHub Actions

Harness

Jira

Confluence

Azure DevOps

Python scripting

Job description

# Senior Developer - Information TechnologyUnited AirlinesFull-timeHouston, Texas, United StatesUSD 112,480 - 146,5400 viewsPosted September 16, 2026## Job DescriptionAchieving our goals starts with supporting yours. Grow your career, access top-tier health and wellness benefits, build lasting connections with your team and our customers, and travel the world using our extensive route network.Come join us to create what’s next. Let’s define tomorrow, together.DescriptionUnited's Digital Technology team is comprised of many talented individuals all working together with cutting-edge technology to build the best airline in the history of aviation. Our team designs, develops and maintains massively scaling technology solutions brought to life with innovative architectures, data analytics, and digital solutions.Job overview and responsibilitiesThe Senior Developer will be responsible for the design, development, and evolution of United's Ticketing Platform. This role will lead the transition from legacy **mainframe** development approaches toward cloud-native architecture and AI-enabled, spec-driven software engineering while delivering scalable solutions that support critical ticketing capabilities across the enterprise.The ideal candidate combines deep technical expertise with strong leadership, communication, and mentoring skills. This individual will partner with Product to translate business outcomes into actionable solutions, collaborate with Engineering and Architecture on technical design, work with EQE to strengthen quality and automation, and coach developers as they grow their technical and professional capabilities.- Lead technical design phases by configuring AI agents to ingest Product Requirements Documents (PRDs), business requirements, system architectures, and approved engineering standards.- Orchestrate agent workflows that transform high-level business and technical artifacts into detailed, implementation-ready specifications for **microservices** and platform capabilities.- Oversee the end-to-end design, development, documentation, testing, deployment, and support of backend solutions built on **C**# and .**NET Core**.- Lead the decomposition of legacy **mainframe** ticketing capabilities into scalable, resilient, and cloud-native services.- Design event-driven architectures and communication patterns leveraging Solace messaging technologies.- Define and govern API contracts, policies, security standards, and routing rules managed through Kong API Gateway.- Architect scalable, resilient, and secure infrastructure deployments across **AWS** services, including ECS, EKS, Lambda, RDS, and related cloud-native technologies.- Maintain and enhance CI/CD pipelines using GitHub Actions and **Harness** to automate build, testing, security validation, deployment, and release activities.- Continuously refine AI prompt pipelines, validation practices, and engineering guardrails to improve the accuracy, completeness, and quality of agent-generated technical specifications.- Lead API integrations between internal platforms, external systems, and cloud services using API-first design principles.- Collaborate closely with Product Managers and business stakeholders to translate business capabilities into scalable technical solutions and delivery plans.- Partner with Engineering, Architecture, EQE, Platform Engineering, and Operations teams to ensure solution quality, successful delivery, and operational readiness.- Facilitate technical discussions, design reviews, and architecture assessments, helping cross-functional teams reach clear and timely decisions.- Highlight and document risks, issues, blockers, dependencies, and technical decisions while driving resolution plans with the appropriate stakeholders.- Mentor and coach developers in software engineering best practices, cloud-native design, AI-assisted development, technical problem-solving, and software craftsmanship.- Foster a culture of technical excellence, continuous learning, accountability, inclusion, collaboration, and innovation.- Champion quality engineering by partnering with EQE to improve automation, testability, reliability, and overall software quality throughout the development lifecycle.- Communicate complex technical concepts clearly to technical and non-technical audiences, and build trusted relationships across the organization.- Stay current with industry best practices and emerging technologies in distributed systems, cloud engineering, API development, platform engineering, and AI-enabled software delivery.## Requirements & SkillsQualificationsWhat’s needed to succeed (Minimum Qualifications):- Bachelor's degree in Computer Science, Engineering, or related field preferred- 3+ years of experience in software development- Experience in the design, development, documentation, testing, and debugging of enterprise software systems- Deep expertise in **C**# development, .**NET Core**, and advanced object-oriented design principles- Strong experience designing and developing distributed systems, **microservices**, and API-first architectures- Experience modernizing legacy or **mainframe**-based applications into cloud-native architectures- Production experience with enterprise integration technologies, including Solace messaging and Kong API Gateway- Proven experience building cloud-native applications and infrastructure on **AWS**- Advanced experience with CI/CD automation tools, including GitHub Actions and **Harness**- Hands-on experience integrating AI coding agents, large language model workflows, or AI-assisted engineering practices into the software development lifecycle- Strong understanding of spec-driven development, technical documentation, and automated software delivery practices- Experience working within **Agile**/Scrum or SAFe frameworks and tools such as Jira, Confluence, or Azure DevOps- Demonstrated ability to collaborate effectively across Product, Engineering, Architecture, EQE, Platform Engineering, and Operations organizations- Strong verbal and written communication, stakeholder management, facilitation, and leadership skills- Experience mentoring developers and fostering technical and professional growth within engineering teams- Ability to influence without direct authority, navigate differing perspectives, and build alignment across cross-functional teams- Strong analytical, problem-solving, decision-making, and organizational skills in a fast-paced delivery environment- Must be legally authorized to work in the United States for any employer without sponsorship- Successful completion of interview required to meet job qualification- Reliable, punctual attendance is an essential function of the positionWhat will help you propel from the pack (Preferred Qualifications):- Experience supporting airline Ticketing, Order Management, Reservation Systems, Passenger Services Systems, or related airline technology platforms- Knowledge of Generative AI frameworks, prompt engineering, AI agent orchestration, and evaluation techniques- Proficient in **Python** scripting for automation, data analysis, and operational tooling.- Experience leading adoption of emerging engineering practices and technologies- Experience serving as a technical mentor, coach, development lead, or facilitator of an engineering community of practice- Experience designing highly scalable event-driven architectures and platform services- Familiarity with Domain-Driven Design (DDD), event sourcing, CQRS, and cloud-native architecture patterns- Experience driving quality improvements in partnership with Quality Engineering teams- **Agile** experience## How to ApplyApply directly through the application link above