About Us At One10, we are more than just a workplace; we are a community of individuals who share a common belief – the belief in better products and, equally important, the belief in a better you. Believe in Better Solutions: We take pride in the work we do because we believe in the transformative powers of innovation and recognition. Our commitment to excellence drives us to create solutions that go beyond the ordinary, solutions that have a positive impact on the lives of our customers and clients. Joining One10 means contributing to a culture of continuous improvement, where each day is an opportunity to push boundaries, challenge the status quo, and redefine what's possible. We believe in crafting solutions that make a difference and in setting new standards for quality and ingenuity. Believe in a Better You: At One10, we recognize that our greatest asset is our people. We are committed to fostering an environment that empowers you to thrive both personally and professionally. We believe that by investing in your growth and well-being, we collectively strengthen our ability to achieve greatness. From tailored development programs to a supportive and inclusive culture, we are dedicated to providing the resources and encouragement needed for you to become the best version of yourself. Your success is not just a professional goal; it's our shared commitment. Job Description The Software Engineer contributes to the design, development, and maintenance of modern software solutions that support business needs and client deliverables. This role works closely with Architects, Product Managers, QA, DevOps, and other engineers to build reliable and scalable systems. The Software Engineer focuses on delivering high-quality code, learning modern engineering practices, and collaborating effectively with team members to deliver features and integrations. Scope of Work · Design, develop, and maintain scalable and secure software applications · Implement features based on business and technical requirements · Build and maintain RESTful APIs and web applications · Collaborate with senior engineers and architects on technical design decisions · Participate in integrations with internal systems and third-party APIs · Write clean, maintainable, and well-documented code · Participate in code reviews and follow engineering standards and best practices · Support troubleshooting, debugging, and performance improvements · Participate in Agile ceremonies including sprint planning, standups, and retrospectives · Contribute to CI/CD pipelines and automated deployment processes · Utilize AI-assisted development tools to improve productivity and code quality · Work with Infrastructure and DevOps teams to understand deployment environments and system operations · Perform other duties as assigned Knowledge, Skills, and Abilities - Education & Experience - Bachelor’s degree in computer science, Information Systems, or related field (or equivalent experience) - 3–5 years of professional software development experience - Core Backend Technologies - C# / .NET (ASP.NET Core or Web APIs preferred) - RESTful API development - Entity Framework or similar ORM technologies - Understanding of asynchronous programming and modern backend patterns - Front-End & Web - HTML5, CSS3, responsive design principles - JavaScript or TypeScript - Experience with modern frameworks such as React (preferred) or Angular - Databases & Data - Microsoft SQL Server - Writing SQL queries, stored procedures, and views - Understanding of relational database design and query optimization - Cloud, DevOps & Tooling - Experience with Azure or AWS environments is a plus - Familiarity with CI/CD pipelines (Azure DevOps, GitHub Actions, or similar) - Git-based version control and branching workflows - Exposure to containerization (Docker) is a plus - UI & Third-Party Libraries - Experience with modern UI frameworks (Bootstrap, Tailwind, Material UI, etc.) - Familiarity with component libraries such as Telerik or similar tools is a plus - Integration & Data Movement - Experience building or consuming APIs - Understanding of system integrations and data exchange patterns - AI & Modern Engineering Practices - Experience using AI-assisted development tools (GitHub Copilot, ChatGPT, or similar) - Ability to leverage AI tools for code generation, testing, documentation, and debugging - Awareness of responsible AI usage and data privacy considerations - Soft Skills & Ways of Working - Strong analytical and problem-solving skills - Good written and verbal communication - Ability to work collaboratively within cross-functional teams - Comfortable learning new technologies and frameworks - Experience working in Agile or Scrum environments - Limited travel may be required #LI-Remote Maximum Base Pay 110,000.00 USD

About Us At One10, we are more than just a workplace; we are a community of individuals who share a common belief – the belief in better products and, equally important, the belief in a better you. Believe in Better Solutions: We take pride in the work we do because we believe in the transformative powers of innovation and recognition. Our commitment to excellence drives us to create solutions that go beyond the ordinary, solutions that have a positive impact on the lives of our customers and clients. Joining One10 means contributing to a culture of continuous improvement, where each day is an opportunity to push boundaries, challenge the status quo, and redefine what's possible. We believe in crafting solutions that make a difference and in setting new standards for quality and ingenuity. Believe in a Better You: At One10, we recognize that our greatest asset is our people. We are committed to fostering an environment that empowers you to thrive both personally and professionally. We believe that by investing in your growth and well-being, we collectively strengthen our ability to achieve greatness. From tailored development programs to a supportive and inclusive culture, we are dedicated to providing the resources and encouragement needed for you to become the best version of yourself. Your success is not just a professional goal; it's our shared commitment. Job Description The Software Engineer contributes to the design, development, and maintenance of modern software solutions that support business needs and client deliverables. This role works closely with Architects, Product Managers, QA, DevOps, and other engineers to build reliable and scalable systems. The Software Engineer focuses on delivering high-quality code, learning modern engineering practices, and collaborating effectively with team members to deliver features and integrations. Scope of Work · Design, develop, and maintain scalable and secure software applications · Implement features based on business and technical requirements · Build and maintain RESTful APIs and web applications · Collaborate with senior engineers and architects on technical design decisions · Participate in integrations with internal systems and third-party APIs · Write clean, maintainable, and well-documented code · Participate in code reviews and follow engineering standards and best practices · Support troubleshooting, debugging, and performance improvements · Participate in Agile ceremonies including sprint planning, standups, and retrospectives · Contribute to CI/CD pipelines and automated deployment processes · Utilize AI-assisted development tools to improve productivity and code quality · Work with Infrastructure and DevOps teams to understand deployment environments and system operations · Perform other duties as assigned Knowledge, Skills, and Abilities - Education & Experience - Bachelor’s degree in computer science, Information Systems, or related field (or equivalent experience) - 3–5 years of professional software development experience - Core Backend Technologies - C# / .NET (ASP.NET Core or Web APIs preferred) - RESTful API development - Entity Framework or similar ORM technologies - Understanding of asynchronous programming and modern backend patterns - Front-End & Web - HTML5, CSS3, responsive design principles - JavaScript or TypeScript - Experience with modern frameworks such as React (preferred) or Angular - Databases & Data - Microsoft SQL Server - Writing SQL queries, stored procedures, and views - Understanding of relational database design and query optimization - Cloud, DevOps & Tooling - Experience with Azure or AWS environments is a plus - Familiarity with CI/CD pipelines (Azure DevOps, GitHub Actions, or similar) - Git-based version control and branching workflows - Exposure to containerization (Docker) is a plus - UI & Third-Party Libraries - Experience with modern UI frameworks (Bootstrap, Tailwind, Material UI, etc.) - Familiarity with component libraries such as Telerik or similar tools is a plus - Integration & Data Movement - Experience building or consuming APIs - Understanding of system integrations and data exchange patterns - AI & Modern Engineering Practices - Experience using AI-assisted development tools (GitHub Copilot, ChatGPT, or similar) - Ability to leverage AI tools for code generation, testing, documentation, and debugging - Awareness of responsible AI usage and data privacy considerations - Soft Skills & Ways of Working - Strong analytical and problem-solving skills - Good written and verbal communication - Ability to work collaboratively within cross-functional teams - Comfortable learning new technologies and frameworks - Experience working in Agile or Scrum environments - Limited travel may be required #LI-Remote Maximum Base Pay 110,000.00 USD

• Design, develop, and deploy integrations using MuleSoft Anypoint Platform on Cloud. • Build sync and async APIs and microservices following the XAPI / PAPI / SAPI model. • Collaborate with business analysts and stakeholders to gather requirements and define integration specs. • Support the creation of frameworks for error handling, logging, monitoring, and notifications. • Monitor, troubleshoot, and optimize integrations for performance and reliability. • Document APIs, integration flows, and technical specifications. • Participate in code reviews and ensure best practices and coding standards. • Support and maintain existing integrations.

Solutions for Today’s Challenges. Vision for Tomorrow’s Opportunities. Join William Blair, the Premier Global Partnership. INTRANET POSTING NOTICE TO ALL EMPLOYEES OF FILING OF APPLICATION FOR PERMANENT ALIEN LABOR CERTIFICATION Pursuant to Section 20 C.F.R. 656.10(d), you are hereby notified that this notice is being provided as a result of the filing of an application for permanent alien labor certification for the relevant job opportunity described below: NAME OF EMPLOYER: William Blair & Company, LLC POSITION TITLE: Lead Software Development Analyst POSITION LOCATION: 150 N. Riverside Plaza, Chicago, IL 60606 JOB DESCRIPTION: Lead the design, modification, testing, implementation, and maintenance of firm software applications. Guide software developers in defining requirements, developing test cases, designing, implementing, and providing support for firm applications. Plan and oversee the execution of large-scale software development projects. Resolve escalated technical issues. Provide guidance to less experienced team members. Collaborate with business partners to develop a detailed understanding of their business needs and determine how software applications can facilitate their business operations or needs. Contribute to the long-term planning of firm applications throughout the software life cycle. Provide subject matter expertise on software development methodologies, tools, system architecture, usage, and functionality. Drive the achievement of key milestones and project objectives. Ensure that software development activities comply with firm standards and procedures. Coordinate the requirements definition and development of test cases for new applications and software modifications. Consult with software developers, IT infrastructure staff, and vendors to implement fixes. Develop and implement changes to procedures or methodologies to prevent future issues. Develop application specific business continuity and disaster recovery plans. Oversee testing and documentation of business continuity plans. Evaluate new technologies and vendors. Recommend direction based on holistic understanding of firm application needs. Monitor industry trends and external developments that may impact firm software application solutions. Ensure all activities follow applicable rules, regulations, policies, and procedures. 100% telecommuting permitted. REQUIREMENTS: This position requires a Bachelor’s degree, or foreign equivalent in Information Technology, Management Information Systems, Business Analytics, or a related field, plus 7 years of experience as a Software Developer or related occupation. Additionally, the applicant must have employment experience with: (1) Writing and optimizing stored procedures; (2) Utilizing software development methodologies, specifically Agile, and best practices in code management and process; (3) Using Microsoft SQL and server services (including SSRS, SSIS, SSAS); (4) Managing IT project rollouts to end users; (5) Working with outside teams and senior management; and (6) Writing documentation to be consumed across teams and business units. RATE OF PAY: $153,317 per year BENEFITS: This role is eligible for either a discretionary annual bonus (based on company, business unit and individual performance) and/or commission-based incentives. Our featured benefit offerings include medical, dental, and vision coverage; employer paid short and long-term disability and life insurance; 401(k); profit sharing; paid time off; Maven family and fertility benefit; parental leave (including adoption, surrogacy, and foster placement); as well as other voluntary benefits. Any person may provide documentary evidence bearing on the application to the Certifying Officer of the U.S. Department of Labor at the following address: Certifying Officer U.S. Department of Labor Employment and Training Administration Office of Foreign Labor Certification 200 Constitution Avenue, NW Room N-5311 Washington, DC 20210 Certifying Office E-mail: plc.atlanta@dol.gov Applicants who are interested in this position should email resume to HRImmigration@williamblair.com A reasonable estimate of the current base salary range at time of posting is below. Base salary does not include other forms of compensation or benefits. Actual base salary within the specified range is based on several factors, including but not limited to applicant's skills, prior relevant experience, specific degrees and certifications, job responsibilities, market considerations and, if applicable, the location of the position. This role is eligible for either a discretionary annual bonus (based on company, business unit and individual performance) and/or commission-based incentives. Our featured benefit offerings include medical, dental and vision coverage, employer paid short & long-term disability and life insurance, 401(k), profit sharing, paid time off, Maven family & fertility benefit, parental leave (including adoption, surrogacy, and foster placement), as well as other voluntary benefits. Salary Range $133,700—$160,000 USD About Our Firm William Blair strives to attract qualified candidates who specialize in investment banking, investment management, private wealth management, and other strategic resource groups. We are committed to empowering our colleagues to deliver client success and engage in our communities. Our firm has delivered trusted advice for nine decades, continuing to deepen our expertise and relationships across asset classes and markets throughout North America, Europe, and Asia. We provide advisory services, strategies, and solutions to meet clients’ evolving needs amid dynamic market conditions and varying industries. What sets us apart is that we are an independent partnership, with colleagues who have unique experiences, perspectives, and backgrounds. We empower our people to bring their best thinking so we can deliver the tailored, thoughtful work and problem-solving abilities that our clients expect. We invite you to learn more about us by visiting williamblair.com. William Blair is an equal opportunity employer. It complies with all laws and regulations that prohibit discrimination in employment practice because of race, color, religion, creed, ancestry, marital status, gender, age, national origin, sexual orientation, unfavorable discharge from the military service or on the basis of a physical or mental disability that is unrelated to the employee's ability to perform the duties of the job applied for. EOE m/f/d/v Be aware of hiring scams: William Blair has clear processes and guidelines with regards to recruiting. We do not request personal financial information in connection with an employment application nor does William Blair extend any employment offers without first conducting an interview through one of its registered offices. William Blair does not use instant messaging services such as WhatsApp, Telegram, or iMessage as part of the recruiting or interviewing process. Note to External Recruiters / Search Firms: William Blair does not accept unsolicited resumes and will not pay for any placement resulting from the receipt of an unsolicited resume. Any unsolicited resumes received will not be considered as a valid submission. Download William Blair's privacy policies for job applicants: - California Consumer Privacy Act Privacy Notice (CCPA) - General Data Protection Regulation Privacy Notice (GDPR) Contact us should you have any questions or concerns.