Senior Software Engineer, Data

Who we are
Hallow is on a mission to help people pray. We’re the No. 1 prayer app in the world, with more than 1 billion prayers prayed across 150+ countries. We're building a product that is authentically Christian and Catholic, while at the same time a resource for anyone looking to grow deeper in a relationship with God. We believe that people are hungry for peace, and that there is no surer way to find it than by learning to sit in silence with Christ: “Come to me, all you that are weary and are carrying heavy burdens, and I will give you rest” (Mt 11:28).
Our goal is to build something truly great. Something that combines the beauty of the Church's spirituality with world-class product and content execution. And we need a world-class team to make it happen.
We launched the app in December 2018 and have been blown away with the incredible growth & traction. Hallow has been downloaded more than 25 million times with over 250,000 5-star reviews. We're blessed to be backed by some of the best mission-driven investors in the world and are excited to build out the team to help a lot more folks grow closer to God.
We are a startup. We move quickly. We are small but we take big swings. Each person is responsible for making an impact. It is hard—but deeply meaningful—work. We'd be honored & humbled if you'd consider joining us.
Tldr: You're a senior Software Engineer with a strong focus on data. You bring deep, practical experience, thrive in complex systems, have a keen eye for improvements, and approach your work with a DevOps mindset and a strong sense of ownership. If you’re passionate about improving systems and delivering high-quality solutions at the intersection of software and data, we’d love to talk to you.

What You'll Do

• Engineer robust data systems: Design, build, and maintain scalable software systems that power our data infrastructure. Develop and enhance both new and existing data pipelines and integrations, leveraging modern software engineering best practices.
• Champion data quality: Collaborate cross-functionally with stakeholders and engineers to ensure data is accurate, consistent, and reliable throughout our products and platforms.
• Drive performance and reliability: Proactively monitor, troubleshoot, and optimize the performance of our data-driven systems, recommending, and implementing improvements to ensure resilience, scalability, and maintainability.

What You'll Love

• Mission: This work is incredibly humbling. Every day we hear amazing stories and we get the pleasure of working on something that’s impacting lives. One of our favorite user quotes: “I hate quoting an old, overused cliche, but I’ve been very lost. And I think for the first time in a while I may be found.”
• Ownership: When a company is this small, every employee is a core team member with an outsized impact. Data runs deep through Hallow. You'll impact every aspect of the business.
• Growth: From day one, you'll be a part of the startup journey. We're growing quickly and we'll need your help to build and maintain robust data-intensive systems to drive our product and support our mission.
• Flexibility: We operate as a remote-first team with members all over the globe and are open to candidates anywhere in the U.S. for this position. We don’t care when or where you work, just that it gets done! That being said, our HQ is in Chicago and if in-person work is something you are interested in, we’d love to have you there!
• Comp: We pay competitive market rates in terms of equity, cash, & benefits.

What We're Looking For

• Passion for technology and data: You’re enthusiastic about our mission and have a deep curiosity for both software engineering and data-driven solutions. You stay up to date with the latest trends and advancements in the industry, while remaining grounded in the core principles and history that underpin the field.
• Technical versatility: You bring 5+ years of hands-on software engineering experience and a proven track record of building and maintaining production systems. You are highly proficient in TypeScript, Python, and SQL, and thrive in environments where you work across multiple languages and frameworks. You have a deep, practical understanding of both transactional and analytical databases, and you’ve architected and maintained robust data workflows and orchestration systems.
• Pragmatism: You have a strong grasp of the real-world trade-offs involved in data modeling, data management, and data movement, and y