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Senior Software Engineer - Small Business Technologies

Job in Saint Charles, St. Charles County, Missouri, 63301, USA
Listing for: H&R Block
Full Time position
Listed on 2026-07-19
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer, Backend Developer, Senior Developer
Job Description & How to Apply Below

Senior Software Engineer

We're growing our technology team and are searching for a Senior Software Engineer to help us modernize our software architecture. When you join us, you'll use your technical expertise to design, develop, and maintain software components and products that support H&R Block business applications and transform our technology. You'll serve as the lead role for day-to-day functional tasks in the team, developer support, and maintaining the development environment.

Ready to innovate and solve problems in new ways? Join us.

Use tools, languages, coding standards, and best practices to develop new product features and maintain year over year product functionality and enhancements

Create and execute unit tests and addresses defects

Work closely with Quality Assurance, User Experience, and other related teams to ensure consistent understanding of requirements and approach

Assist in planning and implementation of a strategic direction for the product

Identify product design features to support scalability, usability, and better performance

Assist and drive technical design and code reviews for all new enhancements and maintenance work delivered by the development team

Understand complex business and functional requirements and produce technical specifications and product requirements

Mentor and coach other team members on the latest technological advances within the current technology used and establish consistent best practices

Drive technical decisions from concept through production, balancing business outcomes, scalability, maintainability, and delivery timelines.

Own complex initiatives spanning multiple systems and teams, proactively identifying dependencies, risks, and mitigation strategies.

Champion engineering excellence by establishing development standards, improving architecture, and reducing technical debt.

Leverage AI-assisted and agentic development workflows to increase engineering productivity, code quality, testing coverage, and knowledge sharing.

Evaluate and implement emerging technologies, including AI and automation capabilities, to improve developer experience and customer outcomes.

Design systems that effectively combine business logic, APIs, data services, and intelligent automation to solve customer and operational challenges.

Contribute to architectural decisions that improve system reliability, observability, performance, security, and scalability.

Partner with product, design, and engineering leaders to translate ambiguous business needs into sustainable technical solutions.

Identify opportunities to simplify systems, eliminate unnecessary complexity, and improve long-term maintainability.

Lead root cause analysis and resolution efforts for complex production issues while driving preventative improvements.

Build and maintain monitoring, alerting, and operational practices that improve service health and customer experience.

Advocate for automation across development, testing, deployment, and operational processes.

Foster a culture of continuous learning, experimentation, innovation, and accountability across the engineering team.

Mentor engineers on technical design, systems thinking, AI-enabled development practices, and career growth.

Bachelor's degree in a related field or the equivalent through a combination of education and related work experience.

5 years minimum related work experience with the following:

React / Type Script

Node.js

Python

AWS

REST APIs and event-driven architectures

Git Hub Actions and CI/CD tooling

Infrastructure as Code

Observability and Monitoring Platforms (Datadog preferred)

AI-assisted software development tools and engineering automation platforms

Building cloud-native and distributed systems

Contributing to architecture and technical design decisions

Mentoring engineers and promoting engineering best practices

Demonstrated ability to solve complex problems and drive outcomes in ambiguous environments

Leveraging AI-assisted development tools and agentic engineering workflows to improve productivity, testing, code quality, and documentation

At H&R Block, our purpose is simple: to provide help and inspire confidence in our clients and communities everywhere. For more than 70 years, we've led the tax industry and we continue to evolve through our Block Next strategy, blending human expertise with digital innovation.

That same commitment to care extends to our associates. When you join us, you become part of a High Performing, Connected Culture built on strong relationships, continuous learning, and a shared commitment to making a meaningful impact. We invest in your well-being through competitive pay, comprehensive benefits, and support for life both in and outside of work.

Pay Range Information

The pay range for this position is listed below. Local minimum wage laws apply. This information is posted pursuant to local requirements to provide applicants with information about what they might be eligible to receive. Individual pay decisions will depend on job-related factors…

Position Requirements
10+ Years work experience
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