Senior Software Developer

We’re looking for thoughtful problem solvers who are passionate about finding success for our clients, teams, and end-users through the human-centered design process.

Since 2001, Atomic Object has designed and developed software products for web, mobile, desktop, and embedded devices. We were founded on the belief that not all software is created equal. Many people can write code, but it takes a close-knit team of passionate people to create exceptional, innovative products that change the way people do business.

We’re an employee‑owned company with 100+ Atoms based in our Grand Rapids, Ann Arbor, Chicago, and Raleigh offices. Unlike many other technology companies, we have a flat organization. There is no corporate ladder to climb. As a company that values transparency, we practice open‑books management. At Atomic, you can stay close to the craft of making software for your entire career without missing out on owning a part of the company and its profits.

Atomic makers work on self‑managed, cross‑functional teams of 2‑10 designers, delivery leads, developers, and testers. They collaborate to create products for our clients, from the idea phase through launch and beyond. Projects typically span 6 to 12 months, so you will have many opportunities to work with different people and tackle new challenges.

As a senior software developer at Atomic, your primary responsibility is creating a great experience for our clients by leading projects with empathy, clarity, and technical insight. You’ll guide teams, mentor fellow developers, and help clients make confident technical decisions. While writing code and tests alongside other Atoms is an important part of your role, much of your impact comes from fostering collaboration, setting technical direction, and ensuring that both team and client succeed.

Atomic promises clients a great experience and a great product. Software developers deliver on that promise by being kind, curious, positive leaders who provide excellent high‑level technical advice to a diverse set of clients.

A key way senior developers contribute to this experience is by sharing their knowledge and helping others grow. Atomic lives by its “ teach and learn” value mantra. In this position, you’ll spend time daily with mentoring teammates, teaching what you’ve learned over your career and learning from those around you. We also support learning through professional development by sponsoring annual conference attendance and involvement in local and national organizations.

Additionally, you’ll help broaden the impact of our services by serving as a technical marketer through opportunities like attending and hosting local developer meetups and contributing to our shared company blog.

• Home base in Chicago, IL
• Work in our Chicago office 3‑4 days/week

• Write clean, logical, high‑quality code and adopt test‑driven development and Agile practices.
• Stay up to date on new technologies and approaches to software development, such as LLMs, emerging languages/frameworks, and tools that accelerate quality delivery.
• Adopt a pragmatic approach to time management with regard to project trade‑offs (e.g., refactoring vs. new feature development).
• Contribute to project documentation as needed by internal and external teams.
• Pair with team members to share knowledge and experience, fostering a two‑way learning environment.
• Model best practices in collaboration, code quality, and problem‑solving to shape an inclusive, high‑performing team culture.
• Support teammates in client‑facing situations, helping them communicate technical ideas clearly and confidently.
• Approach collaboration with kindness, curiosity, and respect for teammates of varying experience levels.
• Deliver high‑quality custom software across web, mobile, and embedded platforms—choosing tools and architectures that best fit the client’s goals, constraints, and timeline.
• Demonstrate broad technical versatility by contributing effectively across the stack and adapting quickly to shifting project needs.
• Get up to speed on existing projects’ domains, technology stack, and platforms.
• Participate in the Agile project flow…