Old National Bank · 2 weeks ago
Software Developer III
Old National Bank is a regional financial institution serving clients and communities. The Software Developer III owns delivery of complex features and small systems through production, resolves ambiguous engineering problems, and sets technical direction. The role focuses on secure, reliable, AI-enabled, AWS cloud-native software while mentoring engineers and partnering with product, security, and risk teams.
BankingFinanceFinancial ServicesWealth Management
H1B Sponsor Likely
Responsibilities
Convert business intent and specifications into shipped features that meet functional, non-functional, and compliance requirements, increasingly using agentic and AI-assisted workflows
Write and review high-quality code when establishing patterns, building secure components, integrating services, or ensuring AI-produced code meets standards
Ensure both human-written and AI-assisted code is validated through automated testing and continuous verification to maintain safety and correctness
Optimize for outcomes: improve cycle time, reliability/SLOs, quality, and delivery economics; apply engineering effort where it provides the most leverage or safety
Identify ambiguity, dependencies, and operational risk early; harden prototypes into resilient production systems
Follow the bank's change-management discipline - ship changes to production through documented review and approval, respecting segregation of duties and auditability
Design and build AI-enabled systems on Amazon Bedrock, and secure them by applying Bedrock Guardrails and prompt designs that defend against prompt injection, prompt leaking, and jailbreaking
Design and operate AWS cloud-native / serverless systems using GitOps CI/CD and Terraform
Set and document technical patterns for your area, and influence the broader technical direction
Mentor Developer I and II engineers through pair programming and code-review coaching, in software design, coding best practices, and agentic workflows
Lead design and code reviews for your area
Partner with product, security, and risk to shape acceptance criteria and appropriate controls, and apply responsible-AI practices (evaluation, guardrails, human-in-the-loop) in a regulated environment
Qualification
Required
Bachelor's degree in Computer Science or a related field, **or equivalent practical experience** (at this level, a track record of owning production systems carries the most weight)
5–8 years of professional software engineering experience, including ownership of complex, production systems
Strong proficiency in two or more of Go, Python, and TypeScript, including API design, integration patterns, and cloud-native development
Experience with AWS, CI/CD, and infrastructure-as-code (Terraform); familiarity with serverless architectures
Demonstrated ability to build secure, reliable systems and to raise the quality bar for a team through reviews and mentorship
Preferred
Experience building features that integrate existing AI models - retrieval-augmented generation (RAG), tool/function calling, agent orchestration, evaluations, and guardrails. We build on **AWS** (Amazon Bedrock, Bedrock Knowledge Bases, Bedrock Guardrails, and AWS-native orchestration such as Step Functions / Lambda); deep experience with a specific framework is not required - we care that you understand the patterns and can apply them in our environment
Experience with AI evaluation / observability, guardrails, and policy-as-code
Experience delivering compliant software in a regulated financial-services environment
Benefits
Bonus
Medical insurance
Dental insurance
Vision insurance
401K
Continuing education opportunities
Employee assistance program
Impact Network Groups led by team members who are passionate about driving engagement, creating awareness of diverse backgrounds and experiences, and building inclusion across the organization
Company
Old National Bank
Regional bank offering personal, business, wealth, and online banking.
H1B Sponsorship
Old National Bank has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
65%
Represents job field similar to this job
Engineering and Development
Customer Service and Support
Accounting and Finance
Legal and Compliance
Sales
Trends of Total Sponsorships
*2025 (4)
2024 (5)
2023 (5)
2022 (5)
2020 (1)
Funding
Current Stage
Public CompanyTotal Funding
$400M2024-11-25Post Ipo Equity· $400M
1984-12-04IPO
Leadership Team
Timothy Burke
President & Chief Operating Officer
Monica Rubio
Community Lending Market Executive, SVP
Recent News
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Company data provided by crunchbase