Senior Backend Engineer

At In Tandem, we build technology that helps families manage everyday routines and navigate life’s biggest transitions. Through our four brands—Our Family Wizard , Cozi, Family Wall, and Custody Navigator—we help families stay organized, communicate well, and foster healthy childhoods.

We believe technology should strengthen relationships and make daily coordination less complicated. Everything we create is designed to lighten the mental load, reduce conflict, and support families through big and small moments.

If you want your work to make a real difference in the daily lives of parents and kids, In Tandem is the place where your impact will truly matter.

This is a senior engineering role for someone who has already made the shift to AI-native development. Your day is built around writing specifications, orchestrating agents, and reviewing the features they deliver. Your output is measured in features shipped and outcomes validated.

You're grounded in backend engineering — Java/Spring is our stack and preferred — but we're open to candidates whose depth is in another statically typed language (Kotlin, C#, Go) or who bring full-stack range (React/Web, iOS, Android) on top of real backend chops. What we won't compromise on is the AI-native operating model and the systems judgment that lets you review agent output critically.

This permanent role is structured as a rotation, giving you broad platform exposure and accelerated career growth across multiple teams and products before you find your long-term home in the engineering organization. You'll collaborate with product managers, designers, QA analysts, automation engineers, and web and mobile engineers to solve meaningful problems for parents, children, and practitioners across our platforms — using AI as a force multiplier at every layer of the SDLC.

Please note:

we're only accepting applicants located in the United States and are unable to provide sponsorship at this time.

Getting to know teammates, technology, and tactics.

Your first day, you'll pair with your manager and a colleague to set up your local environment and ship a bug fix — using our agent workflows end to end. The following 29 days involve connecting with engineers across the professional experience and Reporting to understand how we prioritize, plan, build, and deliver value on Our Family Wizard . You'll get immersed in daily and weekly agile rituals, the API guild, and our internal skills and plugins ecosystem.

By the end of your first month, you'll be running your own spec-to-ship cycles inside Pro Core's domain — the professional user experience and Reporting.

By day 60, you're operating our SDLC from planning through production release — authoring specs, orchestrating multi-file agent work, and reviewing outcomes rather than lines. You'll have a broad understanding of our backend architecture and deeper expertise in the services Pro Core owns and the APIs powering both the professional user experience on Our Family Wizard  and our Reporting product. You'll ship to production several times a day and start contributing skills and plugins that the rest of engineering can reuse.

Beyond month two, you grow into an autonomous operator — architecting solutions to complex problems, defining specs sharp enough that agents can execute them, and calibrating when a problem needs human hands vs. agent iteration. You'll partner with cross-functional teammates and leadership to shape execution plans for new features. We'll start conversations about long-term team alignment between days 30–60 and target a 3–4 month rotation.

With foundational understanding gained, you inform platform-level change and find your team home. Complex product problems, scale and modernization challenges, and the frontier of AI-integrated product experiences will establish you as a subject-matter expert and expand your ownership.

• AI-native operator. You've made the shift from writing code to orchestrating it. Specs are your primary input mechanism. You trigger agent work, review completed features, and iterate — you're not…