Software Engineer III

FirsTech; Champaign (IL); On-site; USD 106,000 - 150,000; Full time

Benefits offered by this job

401(k) match

Profit sharing

Employee stock purchase plan

Paid time off

Medical

Dental

Vision

Company‑paid life insurance and long‑/

Disability insurance

Wellness incentives

HSA / FSA

Job summary

Busey Bank is seeking a Software Engineer III to design and build full‑stack features on our payment platform. You’ll work on APIs and data models in C#/.NET and UI in Angular/React, mentoring peers and guiding architecture with senior leadership.

The role emphasizes hands‑on contribution, SOLID design principles, and collaboration in an Agile environment, with opportunities to lead technically and influence customer solutions.

Qualifications

• Backend and frontend full‑stack capabilities with API design and UI development.
• Strong knowledge of C#, .NET and SQL Server; Azure and Kubernetes experience appreciated.
• Experience with Angular/React and modern CI/CD practices.

Responsibilities

• Design and build full‑stack features from API and data model to Angular/React UI.
• Translate customer and product requirements into working solutions within existing frameworks.
• Serve as subject‑matter expert and point of contact for assigned platforms, including customer interaction.
• Propose architectural improvements and drive delivery practices.
• Mentor junior engineers and participate in code reviews.

Skills

C#

.NET

Angular

React

Azure

Kubernetes

GitHub Actions

Visual Studio

Jira

Auth0

SQL Server

MongoDB

Education

Bachelor’s Degree Preferred or equivalent practical experience

Tools

Visual Studio

GitHub

MongoDB

GitHub Actions

Azure

IIS

Job description

Position Summary

The Software Engineer III builds and extends the solutions our customers rely on, on top of our payment processing platform. This position works full stack — building APIs and services in C#/.NET on the backend, and features in Angular and/or React on the frontend — while acting as a technical point of contact for the platforms owned. This is a senior individual-contributor role with room to lead within a development team: setting technical direction on your projects, mentoring less experienced engineers, and shaping how the team builds software.

Duties & Responsibilities

• Design and build full-stack features end to end — from API and data model through to the Angular/React UI that consumes it


• Translate requirements from customers and product management into working solutions within our existing development frameworks and architecture


• Act as subject‑matter expert and point of contact for your assigned application platform(s), including direct interaction with customers when needed


• Propose and drive architectural improvements to new and existing applications — you're expected to bring recommendations, not just implement others'


• Identify opportunities to improve team process, tooling, and delivery practices, and help drive those changes


• Write maintainable, well‑tested code, applying SOLID principles and sound object‑oriented/domain design


• Participate in code reviews and mentor junior and mid‑level engineers on both technique and judgment


• Work within an Agile/Scrum process, including sprint planning, estimation, and — depending on the team — acting as a technical lead for the scrum team


• Contribute to and maintain CI/CD pipelines in GitHub Actions


• Design and build full‑stack features end to end — from API and data model through to the Angular/React UI that consumes it

Education & Experience

• Backend: C#, .NET (multiple versions/frameworks) advanced‑level command, Microsoft SQL Server


• Frontend: Angular and/or React


• Infrastructure: Microsoft Azure, IIS, Azure function apps, Kubernetes microservices


• Source Control / CI/CD: GitHub, GitHub Actions


• Identity/Auth: Auth0


• Tools: Visual Studio, Jira

Ability to:

• Demonstrate advanced knowledge of technical concepts mentioned above


• Use excellent written and oral communication skills


• Demonstrate ability to cope with deadlines and pressure situations gracefully

Education and Training: Bachelor’s Degree Preferred or equivalent practical experience 4‑6 years of professional software development experience, including full‑stack work

Hands‑on experience building production UIs in Angular and/or React

Solid experience with SQL Server as both a hosting platform and a development/query tool

Experience with Microsoft Azure and GitHub‑based CI/CD pipelines

Demonstrated application of SOLID design principles and good coding craftsmanship

Comfort acting as a customer‑facing technical point of contact

Demonstrate advanced knowledge of and experience with coding concepts mentioned above, ability to deliver high quality multi‑tier application solutions

Experience leading scrum teams, mentoring other engineers, acting as customer point‑of‑contact and technical subject matter expert

Experience in payments, fintech, or another compliance‑heavy domain preferred

Familiarity with Domain‑Driven Design concepts preferred

Experience working across a distributed/global engineering team preferred

Experience with MongoDB preferred

Compensation and Benefits

Salary offered is based on factors, including but not limited to, the job duties, required qualifications and relevant experience, and local market trends. The role may be eligible for bonus or incentives based on company and individual performance. (Base Pay Range: $106,000 - $150,000/year)

Busey’s Total Rewards include a competitive benefits package offering 401(k) match, profit sharing, employee stock purchase plan, paid time off, medical, dental, vision, company‑paid life insurance and long‑term disability, supplemental voluntary life insurance, short‑term and long‑term disability, wellness incentives and an employee assistance program. In addition, eligible associates may take advantage of pre‑tax health savings accounts and flexible spending accounts.

• 401(k) match


• profit sharing


• employee stock purchase plan


• paid time off


• medical


• dental


• vision


• company‑paid life insurance and long‑term disability


• supplemental voluntary life insurance


• short‑term and long‑term disability


• wellness incentives and an employee assistance program


• pre‑tax health savings accounts and flexible spending accounts

Equal Opportunity

Busey values a diverse and inclusive workplace and strives to recruit, develop and retain individuals with exceptional talent. A team with diverse talent, working together, is essential to Busey’s commitment of delivering service excellence.

Busey is an Equal Opportunity Employer including Disability/Vets. Visit Busey.com/Careers to learn more about Busey’s Equal Opportunity Employment.

Unsolicited Resumes

Busey Bank, and its subsidiaries, does not accept any liability for fees for resumes from recruiters or employment agencies ("Agency"), without a binding, written recruitment agreement between Busey and Agency describing the services and specific job openings ("Agreement"). Busey may consider any candidate for whom an Agency has submitted an unsolicited resume and explicitly reserves the right to hire those candidate(s) without any financial obligation to the Agency, unless an Agreement is in place. Any email or verbal contact with any Busey associate is inadequate to create a binding agreement.

Agencies without an Agreement are requested not to contact any associates of Busey with recruiting inquiries or resumes. Busey respectfully requests no phone calls or emails.

Busey offers diverse employment opportunities - both remote and onsite in Arizona, Colorado, Florida, Illinois, Indiana, Kansas, Missouri, New Mexico, Oklahoma and Texas. We strive to place talent applicants in positions that fit both their skillset and career goals.

Company Culture

Every day, our associates live Busey’s core values, doing better business, building stronger relationships and creating thriving communities—while delivering meaningful value to shareholders.

Busey values a diverse and inclusive workplace and strives to recruit, develop and retain individuals with exceptional talent. A team with diverse talent, working together, is essential to Busey's commitment of delivering extraordinary excellence.

Busey is an Equal Opportunity Employer including Disability/Vets. Visit Busey.com/Careers to learn more about Busey's Equal Opportunity Employment.