• Provide senior-level implementation for new features across the full-stack • Implement full test automation for your work (we have a culture of ownership and quality) • Own projects from a technical perspective, from conceptualization to launch • Solve complex, but fun, technical challenges • Research, propose, test, and implement new techniques and technologies • Collaborate with team members on design techniques and coding standards

• Set the engineering strategy for your area of the Protect platform and turn long-term product and business goals into clear technical plans. • Lead and develop engineering managers and senior engineers, creating strong teams with clear ownership, healthy operating rhythms, and meaningful growth paths. • Deliver complex distributed systems predictably and at high quality, balancing speed, scalability, reliability, and long-term technical health. • Partner closely with Product, Research, Security, and executive stakeholders to align roadmap priorities, technical investments, and customer outcomes. • Raise the bar on architecture, observability, operational excellence, and developer productivity across your area. • Use metrics and sound engineering judgment to improve delivery health, team effectiveness, and the resilience of systems running at scale.

Role Description We're seeking a driven Software Engineer to help grow one of the nation's fastest-growing public sector fintech firms. As a Software Engineer, you'll be instrumental in building and scaling the platform infrastructure that helps public entities across the country make smarter, more confident financial decisions. This role is ideal for a self-motivated, goal-oriented individual who enjoys working with data-intensive applications, and is looking to grow into more advanced system design and architectural responsibilities over time. This position will report to the Chief Product and Technology Officer and will be fully remote. Travel is expected to be up to 5%. Responsibilities - Backend Development - Design, build, and maintain scalable APIs and backend services. - Work with financial and transactional data pipelines, ensuring accuracy and performance. - Improve system reliability, observability, and performance. - Full-Stack Contribution - Contribute to front-end features using React when needed. - Collaborate with designers and product to deliver cohesive user experiences. - Help connect backend systems to intuitive, performant UI components. - Feature Development & Delivery - Own features from design through deployment with guidance from senior engineers. - Translate product requirements into technical implementations. - Write clean, maintainable, and well-tested code. - Collaboration & Code Quality - Participate in code reviews and technical discussions. - Work closely with product, design, and other engineers. - Contribute to improving development workflows and standards. - Data & Systems Thinking - Work with structured financial datasets and time-series data. - Ensure correctness, consistency, and auditability of backend logic. Qualifications - Bachelors degree plus minimum five years work experience. - Minimum 3–5 years of relevant and progressive software engineering experience. - Demonstrated proficiency in Python. - Proven ability to build and maintain APIs. - Familiar with React, modern JavaScript/TypeScript, and the ability to contribute to UI features. - Experience with relational databases and version control (Git), CI/CD workflows. - Exposure to cloud platforms (AWS, GCP, or similar) and containerization basics. Additional Skills and Abilities - Experience in FinTech, banking, or financial systems. - Familiarity with data processing or ETL workflows. - Exposure to infrastructure-as-code tools. - Experience working with analytics or reporting systems. - Exceptional attention to detail, time management, and the ability to manage multiple priorities independently. - Growth-oriented mindset with the ability to accept and act on feedback constructively. - Eager to learn, results-driven, and adaptable. Benefits - Competitive salary and benefits (Health, Dental, Vision, Basic Life, SDBL). - 401K Plan. - Flexible PTO, sick leave, and paid holidays. - Cell phone reimbursement. - Benefits offerings may vary by location and employment status. Application Timeline We anticipate the application window for this opening will close on: June 5th, 2026. Submission does not guarantee selection, and three+one reserves the right to modify or cancel the hiring process at any time. Only shortlisted candidates will be contacted. We’ll retain all applications for future consideration. Selected candidates will be asked to participate in a technical coding exercise as part of the interview process to demonstrate technical proficiency and reasoning. Equal Opportunity & Fair Chance Hiring three+one is an Equal Opportunity Employer. We consider all qualified applicants without regard to race, color, religion, sex, national origin, disability, veteran status, or any other characteristic protected by applicable law. Qualified applicants with arrest or conviction records will be considered in accordance with applicable laws, including the California Fair Chance Act. ADA Accommodation Statement three+one is committed to providing reasonable accommodations throughout the hiring process. If you require an accommodation, please indicate this in your application or reach out through our general contact form.

Role Description As a Software Engineer III, you are a senior contributor to an engineering team responsible for development and support of a Payment Integrity SaaS product. You demonstrate expertise in core technologies, consistently deliver on complex sprint commitments, and model engineering best-practices in code quality, solutioning, and engineering process. You actively mentor others, lead technical conversations that drive quality and delivery decisions, and present knowledge within the broader community or company. Responsibilities - Creating and implementing enterprise-class SaaS software solutions - System analysis, development and testing of software products - Developing with third-party platforms (i.e. applications, APIs, etc.) for customization and integration with company’s core products - Working independently on complex software solutions from start to finish - Mentor junior and mid-level engineers in solutioning and coding best practices - Lead technical conversations driving decisions around quality and delivery, including application of SOLID principles - Help drive initiatives related to quality attributes and contribute to improving technical standards across the team - Advise on work items in planning and during sprints to help achieve goals and promote high quality in deliverables - Find and implement quality improvements through refactoring and code rework in a targeted manner - Actively present findings and solutions in cross-organizational or community groups to help further knowledge in others Qualifications - 4+ years of experience writing enterprise-class software solutions - Bachelor’s Degree in Computer Science or related field, or equivalent professional experience in an enterprise-class setting - Experience and aptitude with the .NET Framework and C# - Experience and aptitude with SOAP and REST Web APIs (i.e. XML/JSON, WSDL, etc.) - Experience writing back-end and/or middleware software solutions - Experience with SQL and/or No-SQL databases, such as MySQL or MongoDB - Experience writing Front-End software utilizing common Javascript frameworks (Angular, React, Node, etc.) - Positive, self-motivated, driven, and teachable attitude - High standard of personal integrity and accountability - Passion for software engineering with a team-oriented, customer-focused mindset - Passion and aptitude for solving complex problems Preferences - Healthcare system experience, especially with claims, member/eligibility, and provider data - Experience and proficiency with ALL parts of defining, designing, and implementing scalable, enterprise-class software solutions - Strong communication skills, especially aptitude to break down complex problems into simple, non-technical terms - Advanced knowledge and experience with cloud technologies, such as AWS, including serverless architecture and scalable cloud design - Technical documentation skills are a plus - Agile or technical certifications are a plus - Experience and aptitude directly supporting users and/or conducting end-user training - Proficiency in application architecture and scalable implementation Benefits - Medical, Dental, and Vision Insurance – Enjoy medical, dental, and vision insurance that begins on your first day, ensuring your health and wellness are always supported. - 401(k) with Matching and Immediate Vesting – Secure your financial future with a company match and instant vesting. - Company-Paid Short-Term Disability (STD) – Added security for unforeseen circumstances. - Company-Paid Personal Financial Advising – Expert guidance to help manage your finances. - New Hire Stipend – A one-time stipend to purchase home office supplies (laptop and charging cable provided by the company). - Pet Insurance Options – Choose from two carrier options to keep your furry friends covered. - Paid Holidays – 9 company holidays plus 2 floating holidays for added flexibility. - Virtual Counseling and Telemedicine – Company-paid access to mental health and medical support from the comfort of your home. - Paid Parental Leave – Time to focus on family during this special chapter. - Generous Vacation & Wellness Time – 4 weeks of vacation beginning accrual on day one, plus 1 additional week for wellness. - Professional Development Stipend – After one year, enjoy a $500 annual stipend to invest in professional growth (e.g., certifications, webinars).