Software Engineer III

What We're Looking For At HNTB, you can create a career that is meaningful to you while building communities that matter to all of us. For more than a century, we have been delivering solutions for some of the largest, most complex infrastructure projects across the country. With our historic growth, it is an exciting time to join our team of employee-owners. This opportunity entails being responsible for contributing to the design and development of innovative software solutions for complex business needs. You will work with clients and stakeholders to help define software solution strategy and contribute to architectural decisions using advanced technologies. In this role, you will be responsible for managing assigned tasks, contributing to the definition of scope and technical approach, and ensuring quality and performance in solution delivery. You will also provide technical guidance to junior team members and support the evolution of development practices, positioning yourself for future leadership in enterprise software solution initiatives. This role bridges individual contribution and technical leadership, preparing you for senior-level responsibilities by expanding your influence across projects and teams.

What You'll Do:

• Leads the development of complex software components and features.
• Works with clients and stakeholders to help define software solution strategy and architecture.
• Manages assigned tasks and contributes to defining scope, technical approach, and delivery plans.
• Ensures code quality, performance, and security through reviews, testing, and optimization.
• Provides technical guidance and mentorship to junior engineers.
• Collaborates with cross-functional teams to integrate software into enterprise systems.
• Supports the evolution of development practices and contributes to architectural decisions.
• Participates in Agile planning, estimation, and retrospectives.
• Performs other duties as assigned.

What You'll Need:

• Bachelor’s degree in computer science or related field and 5 years of relevant experience, or Master’s degree in computer science or related field and 4 years of relevant experience, or In lieu of education, 9 years of relevant experience.

What You'll Bring:

• Strong knowledge of software architecture and design patterns.
• Experience with CI/CD, cloud platforms, and container orchestration.
• Advanced proficiency in modern programming languages and frameworks.
• Ability to lead technical discussions and mentor others.

What We Prefer:

• Performance & Scalability: Optimizing the server and database architecture to ensure the app runs fast, even during sudden spikes in traffic
• Languages & Frameworks: Python, C#, JavaScript/Node.js
• Databases: Experience with one or more databases such as (PostgreSQL, MSSQL, MongoDB, Redis, Oracle, NoSQL)
• Experience developing and maintaining public-facing SaaS applications supporting stakeholder engagement and data collection
• Experience in integrating third-party services and APIs (e.g., communication tools, data systems, GIS, outreach platforms)
• Experience implementing secure application design practices, including: PII data protection (masking, validation, controlled access) Role-based access control and identity management Familiarity with public-sector compliance frameworks (NIST, SOC, ISO)
• Understanding of SSO integrations (SAML, identity providers like Entra ID)
• Strong experience building and supporting cloud-native applications on AWS (multi-region architectures where applicable)
• Proficiency in AWS services such as: Compute (EC2, Lambda, container services ECS) Storage (S3, EBS) Databases (RDS, DynamoDB) Networking (VPC, subnets, security groups)
• Deep understanding of the AWS Shared Responsibility Model and secure cloud design
• Strong understanding of the web development lifecycle and programming techniques and tools.
• Excellent project and time management skills.
• Collaborating with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience.
• Knowledge or Experience implementing: Authentication (login), Authorization (permissions), Encryption, and Data Protection Protocols Identity and Access Management (IAM) Encryption (KMS, TLS in transit, encryption at rest) Logging and monitoring (CloudTrail, CloudWatch, Security Hub) Familiarity with cloud compliance and audit readiness (SOC 2, NIST controls) Understanding in Oauth, OpenID, Microsoft Identity, OpenIddict, or other security frameworks

Equal Opportunity Employer/Disability/Veteran Visa sponsorship is not available for this position.

Locations: Chicago, IL, Kansas City, MO . . . . . . . . . . . . . . . . . . .

The approximate pay range for Illinois is $105,590.66 - $165,154.61. Please note that the pay range provided is a good faith estimate for the position at the time of posting. Actual compensation will be dependent on factors, including but not limited to, the individual’s qualifications, experience, knowledge, skills, and abilities as well as physical work location within the state. . . The approximate nation wide pay range for this position is $95,991.51 - $187,675.71. Please note that the pay range provided is a good faith estimate for the position at the time of posting. Actual compensation will be dependent on factors, including but not limited to, the individual’s qualifications, experience, knowledge, skills, and abilities as well as physical work location.

Equal Opportunity Employer HNTB is an equal opportunity employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status or other status protected by law.

We will provide reasonable accommodations for qualified individuals with a disability where appropriate.

In compliance with the Immigration Reform and Control Act of 1986, we will only employ qualified individuals legally authorized to work in the United States (if the position is or will be one which is subject to U.S. law). Verification of employment eligibility will be required. HNTB participates in E-Verify Know your rights: Right to Work

At HNTB, we are harnessing the power of collaboration and innovation to establish a new vision for the future of mobility across our country. You don’t have to look far to see our impact. For more than a century, HNTB’s spark has connected people and places, expanded opportunity, and left a lasting impact on our communities. Our culture of integrity and inclusion, combined with groundbreaking solutions, has affirmed our reputation and positioned our firm as the industry leader in delivering extraordinary value. When you join HNTB, you are joining an employee-owned firm founded on the values of integrity, collaboration, personal accountability, respect for others, and the development of all employees. We are committed to the continual improvement of an inclusive workplace. We encourage our employees to bring their whole and authentic selves to work, provide them a meaningful welcoming environment where they are valued, celebrated and respected. Diversity of thought and unique perspectives drives innovation, engagement and retention, which makes HNTB better and brings value to our clients and our communities.