Sr. Software Engineer

Early Warning®; Scottsdale (AZ); Hybrid; USD 118,000 - 152,000; Full time

Benefits offered by this job

Healthcare Coverage

401(k) Retirement Plan

Paid Time Off

Parental Leave

Job summary

Early Warning Services, LLC, a trusted name in payments, is seeking a Sr. Software Engineer to design, develop, test, and maintain software applications on the .NET stack.

The role emphasizes building scalable services, APIs, and reliable systems for the financial ecosystem. You will collaborate with engineers and business partners, mentor peers, and contribute to automated testing and CI/CD processes while aligning with risk and security requirements.

Qualifications

• Bachelor's degree in Computer Science or related field, or equivalent experience.
• Typically 5+ years of software development experience.
• Strong experience with C# and the .NET stack.
• Experience designing RESTful APIs and web services.
• Knowledge of SQL and Git.
• Experience with Agile/Lean methodologies.

Responsibilities

• Design, develop, test, deploy and maintain software applications and services using C# and the .NET platform.
• Serve as a technical resource on software development projects, guiding design and engineering best practices.
• Drive the full software development lifecycle from requirements analysis to production support.
• Develop and maintain APIs and application components using modern .NET practices.
• Translate business requirements into technical designs and specifications.
• Design solutions for maintainability, scalability, reliability and performance.
• Develop and maintain automated unit and integration tests.
• Participate in code reviews and provide feedback to maintain code quality and security.
• Troubleshoot production issues and implement sustainable solutions.
• Support existing applications while building new capabilities based on business needs.
• Evaluate technologies and practices for continuous improvement.
• Collaborate with engineers and product partners to refine requirements and estimate work.
• Provide technical guidance and mentorship to Software Engineers.

Skills

Communication skills

Team collaboration

Problem solving

Translate requirements

Education

Bachelor's degree in Computer Science or related field

Tools

C#

.NET

ASP.NET Core

RESTful APIs

SQL

Git

CI/CD

Job description

At Early Warning, we've powered and protected the U.S. financial system for over thirty years with cutting-edge solutions like Zelle, Paze, and so much more. As a trusted name in payments, we partner with thousands of institutions to increase access to financial services and protect transactions for hundreds of millions of consumers and small businesses. Early Warning follows a hybrid work model to allow for a more collaborative working environment. Candidates responding to this posting must independently possess the eligibility to work in the United States, for any employer, at the date of hire. This position is ineligible for employment Visa sponsorship.

Salary: $118,000 - $152,000 per year in Phoenix, AZ. Candidates are also eligible for a discretionary incentive plan and benefits.

Overall Purpose

The Sr. Software Engineer designs, develops, tests, and maintains software applications and services with a primary focus on the Microsoft .NET technology stack. This position provides technical expertise throughout the software development lifecycle, develops complex software capabilities, supports reliable and secure application delivery, and collaborates with engineering and business partners to translate requirements into scalable technical solutions.

Essential Functions

• Design, develop, document, test, deploy, and maintain software applications and services using C# and the .NET platform.
• Serve as a technical resource on software development projects, providing guidance on application design, development approaches, and engineering best practices.
• Drive activities throughout the software development lifecycle, including requirements analysis, technical design, development, testing, implementation, and production support.
• Develop and maintain APIs, services, and application components using modern .NET development practices.
• Translate business and functional requirements into technical designs and specifications.
• Design solutions that support maintainability, scalability, reliability, and application performance.
• Develop and maintain automated unit and integration tests as part of the software delivery process.
• Participate in code reviews and provide actionable feedback to maintain code quality, security, and engineering standards.
• Troubleshoot complex application defects and production issues, identify root causes, and implement sustainable solutions.
• Support and enhance existing applications while developing new capabilities based on business and customer needs.
• Evaluate technologies, frameworks, and engineering practices for potential implementation and continuous improvement.
• Collaborate with engineers, product partners, and other stakeholders to refine requirements, estimate work, and deliver software capabilities.
• Provide technical guidance and mentorship to Software Engineers and other team members as appropriate.
• Support automated build, deployment, and continuous integration/continuous delivery processes.
• Support the company's commitment to risk management and protecting the integrity and confidentiality of systems and data.

Minimum Qualifications

• Education and experience typically obtained through completion of a bachelor's degree in Computer Science or a related field and/or equivalent relevant education, training, and work experience.
• Typically has 5 years of experience or demonstrated portfolio consistent with experience required of the role.
• Demonstrated software development experience using C# and .NET.
• Experience developing applications or services using modern .NET frameworks, such as .NET and ASP.NET Core.
• Experience designing, developing, and integrating RESTful APIs and web services.
• Working knowledge of SQL and relational database concepts.
• Experience with source code management and collaborative development practices using Git or a comparable source control platform.
• Experience developing automated unit and integration tests.
• Experience troubleshooting complex software issues across application components and environments.
• Understanding of object-oriented design, distributed application architecture, and component-based software design.
• Understanding of asynchronous programming, concurrency, and multithreaded application concepts.
• Experience participating in code reviews and applying secure software development practices.
• Experience with automated build, deployment, or CI/CD processes.
• Understanding of iterative software development and Agile/Lean methodologies.
• Ability to translate business and functional requirements into technical solutions.
• Ability to communicate technical information effectively and collaborate across engineering and business teams.

Preferred Qualifications

• Experience with cloud-based application development and deployment.
• Experience with AWS.
• Experience with containerization and orchestration technologies such as Docker and Kubernetes.
• Experience with event-driven or message-based application architectures.
• Experience with test-driven development (TDD) or behavior-driven development (BDD).
• Experience with automated functional, regression, performance, or integration testing frameworks.
• Experience supporting high-volume, distributed, or highly available applications.
• Experience with application monitoring, observability, and production troubleshooting tools.
• Experience modernizing or refactoring legacy .NET applications.
• Additional related education and/or experience.

Physical Requirements

Working conditions consist of a normal office environment. Work is primarily sedentary and requires extensive use of a computer and involves sitting for periods of approximately four hours. Work may require occasional standing, walking, kneeling and reaching. Must be able to lift 10 pounds occasionally and/or negligible amount of force frequently. Requires visual acuity and dexterity to view, prepare, and manipulate documents and office equipment including personal computers. Requires the ability to communicate with internal and/or external customers. Employee must be able to perform essential functions and physical requirements of position with or without reasonable accommodation.

Benefits

• Healthcare Coverage – Competitive medical (PPO/HDHP), dental, and vision plans as well as company contributions to your Health Savings Account (HSA) or pre-tax savings through flexible spending accounts (FSA) for commuting, health & dependent care expenses.
• 401(k) Retirement Plan – Featuring a 100% Company Safe Harbor Match on your first 6% deferral immediately upon eligibility.
• Paid Time Off – Flexible Time Off for Exempt (salaried) employees, as well as generous PTO for Non-Exempt (hourly) employees, plus 11 paid company holidays and a paid volunteer day.
• 12 weeks of Paid Parental Leave
• Maven Family Planning – provides support through your Parenting journey including egg freezing, fertility, adoption, surrogacy, pregnancy, postpartum, early pediatrics, and returning to work.
• And SO much more! We continue to enhance our program, so be sure to check our Benefits page here for the latest. Our team can share more during the interview process!

Early Warning Services, LLC ("Early Warning") considers for employment, hires, retains and promotes qualified candidates on the basis of ability, potential, and valid qualifications without regard to race, religious creed, religion, color, sex, sexual orientation, genetic information, gender, gender identity, gender expression, age, national origin, ancestry, citizenship, protected veteran or disability status or any factor prohibited by law, and as such affirms in policy and practice to support and promote equal employment opportunity and affirmative action, in accordance with all applicable federal, state, and municipal laws. The company also prohibits discrimination on other bases such as medical condition, marital status or any other factor that is irrelevant to the performance of our employees.

Early Warning Services LLC is a proud participant in E-Verify, a federal program to help ensure a legal and authorized workforce.

Privacy Notice Effective: August 21, 2026 This privacy notice is intended to inform California residents of the personal information we collect, how it’s used and disclosed, and the rights you have in regard to such information.