Contract Financial Software Developer Jobs in Phoenix, AZ

Software Development Engineer III (backend + AI)

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About Subsplash

Subsplash is an exciting, award-winning team of 290+ mission-driven people who are committed to our core values of humility, innovation, and excellence. Founded in 2005, we've remained family owned and operated while pioneering the market with the first ever church mobile app. Since then, we've been working together to build The Ultimate Engagement Platform™ for churches, Christian ministries, non-profits, and businesses around the world. We find excitement in serving our 17,000+ clients, creating impactful products, and delighting the 40 million real people who use our platform every day. Subsplash has won awards for best mobile experience, been voted top 100 Washington's Best Workplaces by the Puget Sound Business Journal, created some of the most downloaded apps of all time, and built enterprise software for world-class brands like XBOX, Microsoft, Samsung, Expedia, and Cisco; yet, at the end of the day, we love making a lasting impact and a difference in our world.

Working at Subsplash is more than just a job; we are a team of people who are courageous, inventive, and passionate about doing meaningful work every day. Don't take our word for it—head to Glassdoor and see for yourself!

About the Team

The Subsplash Product and Engineering Team is responsible for all products that the company develops including the tools and services we offer our clients as well as the App Platform that serves our clients' end users. We are a team of designers, developers, and coordinators, creating polished experiences for our clients and end users. The Product and Engineering Team is responsible for the entire user experience including: End-User Mobile Apps, the Subsplash Dashboard (our Content Management System), Subsplash Giving, the Web App, TV apps, APIs, analytics, and more. The Product and Engineering Team supports our Clients by helping them maximize digital engagement, fuel their mission and expand their reach.

About the Role

As a Software Development Engineer III, you will report to one of our Software Development Managers. This is a senior level role within our team, and with that comes a high degree of influence. You will work closely with Designers, Project Managers and other Engineers to build systems that people want to use and can rely upon. You recognize the importance of stability and uptime for web services and financial software systems. You are cautious and contemplative with architectural decisions, working alongside others to deliver secure, stable, and elegant solutions. You enjoy reviewing other team member's work, and receiving constructive feedback as well. You treat security concerns as first class citizens, and will help coach others to understand industry best practices.

Compensation

The total overall compensation for this role will be between $135,000-155,000/yr.

Required Education + Experience

• 7+ years of full time programming experience in a group/team environment
• Experience and proficiency making architectural decisions both in expanding existing projects and planning/implementing new systems
• Significant experience with server-side web technologies (Examples: Unix/Linux, Golang, PHP, MySQL, MongoDB)
• Networking and Network Security proficiency
• Experience protecting against security risks such as XSS, SQL Injection, appropriate use of SSL, session hijacking etc.
• Experience, knowledge, and mindfulness of security best practices with server-side and client-side (e.g. Javascript) languages as well as industry standards
• Hands-on experience with AWS or similar hosting providers
• Experience writing technical documentation and proposals
• Value collaboration, reviewing others work, mentoring others, as well as receiving constructive feedback
• Able to navigate ambiguous requirements while prioritizing multiple projects, tasks, and bug fixes
• Ability to mentor others, communicate complex technical requirements with clarity, and the ability to influence others' technical design decisions
• Participate in the team's on-call rotation as needed
• Bachelor of Science in Computer Science/Engineering, or equivalent experience

Desired Skills and Experience

• Experience with Golang, Microservice architecture, NGINX, Redis, and PHP
• Extensive knowledge of HTML5, CSS3, AJAX, JSON, and cross-browser compatibility
• Solid understanding of OAuth2 and Authentication protocols
• Knowledge of Continuous Integration and Continuous Delivery
• Knowledge of data security best practices related to PCI/DSS/CISP/SOC2
• Experience with containerization and orchestration (Docker/Kubernetes, etc.)
• Experience with AI-driven development agents (e.g., Claude Code, Cursor) and integrating LLMs into the SDLC to significantly accelerate engineering velocity.
• Proficiency in prompt engineering and agent orchestration, with an ability to effectively review, debug, and refine code generated by agents.
• Understanding of AI-native development patterns, including managing agent-specific context (e.g., CLAUDE.md), utilizing Model Context Protocol (MCP) integrations, and adhering to automated guardrails for security and code quality.
• Strong product-design intuition to define requirements, oversee agent-led implementation, and maintain high code quality in a high-velocity, automated environment.
• Familiar with Agile principles and Scrum

You are…

• Passionate: You demonstrate our core values of Humility, Innovation, and Excellence
• Trustworthy: You understand the importance of confidentiality with sensitive information
• Efficient: You naturally have the ability to prioritize multiple projects and tasks
• A Communicator: You have a knack for clear and concise communication
• A Driver: You are smart, persistent, and not easily blocked
• Team-Oriented: You love your Designer, because technical architecture only matters if people want to use the tools and you love your Project Manager, because great software doesn't count if it never ships.
• A Learner: You are committed to staying current with new technologies and industry trends.
• A Mentor: You have a love for learning and teaching others while maintaining a posture of humility.

Location

Subsplash currently has operations in 27 states across the US! As much as we would love to have employees in as many states and countries as we have clients, we are currently limiting hiring to the states we already operate in. As a result of that, this role is only available as a 100% remote position if you reside in one of the following states:

AL, AR, AZ, CO, FL, GA, ID, IA, IN, KS, KY, MO, MI, MN, NC, NM, OK, OH, OR, SC, SD, TN, TX, UT, VA, WA, WY.

Unfortunately, if you do not currently reside in one of these states, we are unable to consider your application.

Benefits

Generous Paid Time Off (Accrual rate of 15 days for the first year and then 20 vacation days per year beginning on your 1 year anniversary), Medical Coverage, Dental Coverage, Vision Coverage, short and long term disability and life insurance all free of charge, Competitive Compensation, 401k Matching, Professional Development, Top of the Line Equipment, Referral Program, Parental Leave, Family-Friendly Culture, and the chance to work side-by-side with thought leaders in emerging tech

This position is classified as Full-time/Exempt. Primary position hours are 7:30 am to 4:30 pm Mon-Fri.

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Note: Employment with Subsplash is contingent upon satisfactory proof of employee's right to work in the U.S., as required by law and upon completion of a basic background check and; Employment with Subsplash is considered "at will," meaning that either the company or the employee may terminate the employment relationship at any time without cause or notice. Subsplash is an Equal Opportunity Employer. We value all human life as all people are created with equal dignity, value, and worth. We do not discriminate on the ground of race, color, religion, sex, age, disability or national origin, or genetic information in the hiring, retention, or promotion of employees; nor in determining their rank, or the compensation or fringe benefits paid them.