Senior Software Engineer

Lillio; North Dakota; Remote; USD 110,000 - 150,000; Full time

Benefits offered by this job

Flexible working arrangements

Health benefits package

Paid time off

Learning and development

Virtual social activities

Job summary

Lillio is seeking a Senior Software Engineer to design, develop, and maintain web applications using Ruby on Rails, GraphQL, and React. You will join a mission-driven team working to empower early childhood educators worldwide.

You will mentor peers, participate in on-call rotations, and help set technical direction while delivering high-quality, scalable software across platforms.

Qualifications

• Five plus years in software engineering.
• Experience with relational databases and full-stack web apps.
• Proficiency in Ruby on Rails, GraphQL, and React.

Responsibilities

• Develop secure, scalable web apps using Rails, GraphQL, and React.
• Collaborate with product, design, and eng teams on requirements.
• Mentor peers and contribute to code reviews.
• Lead technical decisions and establish best practices.

Skills

5+ years experience

Relational databases

Ruby on Rails

GraphQL

React

Team leadership

On-call experience

Monitoring/logging tools

Education

Bachelor's in Computer Science

Tools

AWS

PostgreSQL

Heroku

Sentry / New Relic / DataDog

Job description

About Lillio (formerly HiMama) and Our Mission:

At Lillio (formerly HiMama), we are a mission driven business with the goal of empowering early childhood educators through innovative, affordable tools that enable them to improve child outcomes, engage family members, and support continued professional growth for their staff. We are committed to serving the field as an authentic voice of the early childhood education (ECE) workforce, providing programs with all of the building blocks for high-quality early care and education and helping early educators focus on what matters most for children’s successful development and learning: relationships, play, creativity, and loving, nurturing caregiving. If you are excited about being part of an impact-driven business, focused on making a difference in the early childhood education industry, Lillio is the place for you.

Lillio is a Series B, private-equity backed company and we're proud to be part of the Bain Double Impact portfolio. Lillio is recognized as an industry leader, most recently selected in 2025 by Time Magazine as one of the world's top EdTech companies.

We’re looking for…

A talented and motivated full stack engineer to join our dynamic engineering team. You care deeply not just about the security, performance, and maintainability of your code, but about our mission to elevate early childhood programs with innovative design and quality solutions. As a Senior Software Engineer you will play a lead role in designing, developing, and maintaining web applications using Ruby on Rails, React, and GraphQL.

Lillio Engineering

At Lillio, our Product & Engineering teams are a tight-knit unit. By using strong product creation methodologies and processes, and by working closely together, we imagine and create great products that immediately make an impact in the lives of millions of educators, parents, and young children. The engineering team at Lillio is made up of full stack web engineers as well as multi-platform mobile experts. Every individual on the engineering team has the opportunity to make a big impact on growing the Lillio product offering with a wide and varied feature set as well as impacting how Lillio builds and delivers that product. From feature enhancements to the core product, ground-up engineering on brand-new architecture, data scaling, and system performance, our team strives for excellence. Engineering at Lillio requires being an adept problem solver that is hard working and motivated to get stuff done.

How You'll Make an Impact:

• Develop secure, performant, and well-tested code for web applications using Ruby on Rails, GraphQL and React.
• Collaborate with product managers, designers, and other engineers to define project requirements and specifications.
• Mentor and coach your peers, including compassionate code review.
• Troubleshoot and debug issues as part of our shared on-call rotation.
• Lead technical decision making and contribute to establishing best practices for your team.

What You Bring to the Table:

• Bachelor’s degree in Computer Science from an accredited University or relevant experience
• Strong communicator who enjoys collaborating with teammates
• Knowledgeable about best practices and emerging trends
• Ambition to work hard in order to make an impact
• Evidence of independence and self-starter attitude
• Propensity to always want to learn and improve
• Strong sense of empathy not only for the user but others that you work with

Required Technical Skills

• 5+ years as a software engineer
• Demonstrated technical or project leadership experience
• Demonstrated expertise with relational databases
• Proficiency with Ruby on Rails, GraphQL, React
• Experience with data monitoring and logging tools, ex Sentry, New Relic, Data Dog, etc

Nice to Have:

• Experience with mobile app development
• Knowledge of UX and UI best practices and trends
• Experience with AWS, Postgres, Heroku
• Comfort leveraging AI (such as): Claude, Gemini, Co-Pilot, MCP, etc.

Tech Stack:

• AWS, PostgreSQL, Heroku
• Ruby on Rails, GraphQL, React Native

Note: we are only considering Canadian applicants for the position at this time.

This role is posted to hire a backfill.

Lillio Perks

• Flexible working arrangements; we are a remote-first company who gathers together (virtually) every quarter, and in-person at least once per year. You must be willing to travel in-person as required for the role
• Health benefits package includes medical, dental and vision
• Paid time off, including vacation, personal and volunteer days
• Opportunities for learning, mentorship and professional development
• Ongoing team-wide and company-wide virtual social activities and success celebrations

Accessibility

Lillio is committed to inclusiveness, equity and accessibility. If you require accommodations at any step of the application or interview process, please indicate so under the "Accommodations Question" box on your application. Accommodations may include but are not limited to: alternative methods of communication, providing a detailed “what to expect”, or modified testing. Please note this list is not exhaustive and we are more than happy to discuss other accommodations as required.

Commitment to Diversity

Diversity, Inclusion and Belonging are central to Lillio's core values. Lillio aims to ensure we provide a safe environment for everyone to thrive while bringing their authentic selves to work. Our mission is to promote an inclusive work space for all employees through Education, Discussion, and Celebration of our differences. Embracing these differences while coming together with a common purpose is what makes our team extra special. Our focus on inclusion and belonging is activated in the day-to-day culture at Lillio through our Diversity, Inclusion and Belonging (DIBS) committee, our bi-weekly DIBS discussions, DIBS Slack community, D&I training and education, volunteer days, donation matching, and more.

Equal Employment

Lillio is an equal employment opportunity employer. We consider all qualified applicants without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other legally protected characteristics.