Sr. Software Engineer - Backend

Lively · Denver, CO · Remote

Posted 7/6/2026 · last confirmed live 8/26/2026

About Lively Lively set out to raise the bar on benefit solutions, because we believe no one should have to sacrifice personal wellness for financial wellness. While traditional benefits focus more on transactions and less on the humans using them, Lively harnesses user-centric design and innovative technology to deliver an effortless experience for employers and account holders alike. Our modern HSA is consistently top-rated, and we have since expanded our offerings to provide a full suite of other benefits and services for companies, consumers, and financial institutions. Lively is a remote-first company, headquartered in San Francisco with employees across the US. Come join us and help make getting the value out of your benefits as simple as it should be. About the Role We are looking for a strong Backend Senior Software Engineer who wants to create deep and meaningful product engagement experiences! We have an increasing user base, and you will be focusing on implementing and enhancing our investment and financial products. Our customers trust us with a lot: integrating seamlessly across financial institutions, moving funds, tracking balances, helping with their healthcare decisions, and keeping their data extremely secure.  In order to take on this mission we’re building our applications on modern web technologies around HTML/CSS/Javascript/React, NodeJS/Typescript, PostgreSQL, Amazon Lambdas and Kinesis etc. You should be comfortable in contributing to every part of the stack: from UI to API development, to complex integrations with financial institutions and partners, and building infrastructure, but you will be expected to be focused mostly on backend development. You should feel comfortable in a fast paced, growing, and nimble environment, keeping in mind that everything we do is to better the lives of our users! Responsibilities Analyze and provide feedback on product requirements. Implement features and functionality with clean and maintainable codes. Take pride in software quality through rigorous functional testing and writing automated unit tests. Troubleshoot production issues, provide resolutions and recommendations for improvement. Skills & Experience 5+ years of experience in software development, with a strong backend development background Bachelor's degree in Computer Science, Engineering, or a related field; or equivalent practical experience. Strong experience with Javascript, Typescript and Node.js. Strong fundamental understanding of relational Databases (Postgresql, Mysql). Proven experience in designing and developing scalable, high-performance web applications. Strong understanding of software architecture and design patterns. Excellent problem-solving skills and a proactive approach to identifying and addressing challenges. Proven experience on building backend services with high availability and scalability requirements. Able to model and design intuitive and scalable schemas. Experience with agile/scrum development methodologies. Strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams. Passion for technology and a continuous learner mindset. Motivated to leverage new AI tools and technologies. Someone who isn't afraid of responsibility, a good sense of humor and a down-to-earth personality. Familiarity with AWS cloud platforms and DevOps practices is a plus. Here's a glimpse into our Interview Process: Recruiting Interview (30 min via google video) Hiring Manager Interview (1 hr via google video) Technical Interview/Coding Exercise (90 min ) Panel Interview (Meet various leaders cross-functionally, split up into 4-5 video calls for 30-45 min each) Offer! The base salary listed is a range for this position. Actual pay will depend on the candidate’s location and experience. $125,000 — $200,000 USD We encourage you to apply even if you do not meet all of the qualifications, but feel you would be a good fit for the position. Benefits & Perks We offer competitive salaries, stock options, medical, dental, vision, life and disability coverage. An HSA with employer contribution, FSA, paid parental leave, medical travel benefits, a 401k plan, flexible vacation policy, lifestyle spending accounts, and more! At Lively, we believe having diverse teams in which everyone can be their authentic self is key to our success. We encourage people from underrepresented backgrounds to apply.  Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.  Come join us in our mission to help people optimize their healthcare spending, maximize their savings, and better their livelihood! Lively Inc. participates in the E-Verify program. Learn more about E-Verify here: https://e-verify.uscis.gov/web/media/resourcesContents/E-Verify_Participation_Poster_ES.pdf #LI-Remote

This role is published by Lively on greenhouse. SwiftFit is not the employer and does not accept applications.