Software engineer Jobs in St Louis, MO

At Armanino, you determine your career path. This means it's possible to pursue challenges you are passionate about, in industries you care about.

Armanino is proud to be among the top 20 largest firms in the nation and one of the Best Places to Work. We have built a community of resources ready and willing to support your ideas, strengthen your skills, and expand your professional network. We believe your career should integrate with the rest of your life. At Armanino, you don’t check out of life when you check in at work. That’s why we’ve created a unique environment where your passions, work, and family and friends can intersect. Our goal is to support your growth by connecting you with smart, collaborative professionals who value your ideas.

We are seeking a highly skilled Full-Stack Senior Software Engineer to join our team. In this role, you will design, develop, and maintain modern web applications across the stack. The ideal candidate brings extensive software development experience, strong technical depth, and a passion for mentoring and elevating other engineers.

Our team solves real business problems using modern technology approaches. We embrace Agile principles and deliver work early and often, including frequent customer feedback sessions and weekly demo days. Engineers, product managers, and designers collaborate closely and hold themselves to high engineering standards. We leverage generative AI in prototyping and product development and are building meaningful AI agents—not unnecessary chatbots—among other innovations. This is a team committed to applying current best practices while continuously iterating toward what’s next.

Job Responsibilities

• Develop and maintain a secure, reliable, and scalable, and efficient platform spanning back-end persistence and compute, APIs, and web applications

• Collaborate with cross-functional teams to design and implement software solutions that meet business requirements

• Conduct code reviews and provide constructive feedback to ensure quality and adherence to best practices

• Mentor and guide engineers, fostering technical growth and development

• Participate in the full software development lifecycle, from requirements gathering through deployment and maintenance

• Troubleshoot and resolve complex technical issues

• Drive continuous improvement of development processes, tools, and engineering practices

Requirements

• Minimum 5 years of software development experience

• Strong proficiency in at least one strongly typed language, with a willingness to work in TypeScript

• Minimum 3 years of experience with one or more major cloud platforms (AWS, Azure, or GCP)

• Extensive experience with back-end technologies, NoSQL and/or SQL databases, React, TypeScript, and Node.js

• Solid understanding of software development principles, design patterns, and best practices

• Experience conducting code reviews and mentoring engineers

• Proficiency with AI-enabled software development and adaptability to evolving best practices

• Excellent problem-solving skills and attention to detail

• Strong communication and collaboration skills

Preferred Qualifications

• Experience with GraphQL

• Knowledge of serverless architectures, event-driven systems, and microservices

• Familiarity with Infrastructure as Code (IaC), including AWS CDK

• Experience building agentic AI solutions

• Experience developing software for tax, accounting, or compliance-driven industries such as healthcare or finance

• Experience building multi-tenant SaaS applications

• Experience in a technical leadership role

"Armanino" is the brand name under which Armanino LLP and Armanino Advisory LLC, independently owned entities, provide professional services in an alternative practice structure in accordance with law, regulations, and professional standards. Armanino LLP is a licensed independent CPA firm that provides attest services, and Armanino Advisory LLC and its subsidiary entities provide tax, advisory, and business consulting services. Armanino Advisory LLC and its subsidiary entities are not licensed CPA firms.

Armanino provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability or genetics. In addition to federal law requirements, Armanino complies with applicable state and local laws governing nondiscrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

Armanino expressly prohibits any form of workplace harassment based on race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, genetic information, disability, or veteran status. Improper interference with the ability of Armanino employees to perform their job duties may result in discipline up to and including discharge.

Armanino does not accept unsolicited candidates, referrals, or resumes from any staffing agency, recruiting service, sourcing entity, or third-party paid service at any time. Any referrals, resumes, or candidates submitted to Armanino or any employee or owner of Armanino without a pre-existing agreement signed by both parties covering the submission will be considered the property of Armanino and not subject to any fees or charges. For existing agreements, a role must be approved and open to external search; otherwise, unsolicited and unapproved submittals and referrals will be considered Armanino property and free of fees. In addition, Talent Acquisition is the sole point of contact, and contacting others in our organization without Talent Acquisition’s knowledge will result in termination of contract.

Certain states require us to disclose the pay range and benefits summary for job openings. For Colorado residents, the compensation range for this position: $125,900 - $148,100. For Washington residents, Illinois residents, New York residents, and Southern California residents the compensation range for this position: $138,500 - $162,900. For Northern California residents, the compensation range for this position: $144,800 - $170,300. Compensation may vary based on skills, role, and location. Eligible employees at certain levels can participate in a discretionary long-term financial incentive plan, subject to plan participation rules.

Armanino has a robust offering of benefits, including:

• Medical, dental, vision

• Generous PTO plan and paid sick time

• Flexible work arrangements

• 401K with Profit Sharing

• Wellness program

• Generous parental leave

• 11 paid holidays

For positions based in San Francisco, consistent with the SF Fair Chance Ordinance, an arrest and conviction record will not automatically disqualify a qualified applicant from consideration.

For Individuals who would be working within the City of Los Angeles, Armanino will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance

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We have a community of resources that are ready and willing to support your ideas, build your skills and expand your professional network.