Senior Full-Stack Engineer

Simple has had over 17 million downloads and more than 300,000 5-star reviews, having helped millions lose weight successfully and sustainably. Simple has earned recognition as Best Virtual Coach and one of the Top 100 AI companies — all thanks to a dedicated global team driving real impact.

With SIMPLE as a partner in their pocket, users feel cared for and empowered to embrace — and stick to — new healthy habits. To learn more, visit simple.life.

Simple is looking for a Senior Full-Stack Engineer to join a newly created team focused on internal platforms, product tooling, and automation.
You will work on tools and services used across the company, including mission-critical workflows for managing mobile app content, configurations, admin operations, and internal product processes.

What you will do:

• Build and maintain admin panels using Next.js, React, and TypeScript.
• Integrate platform services with backend microservices, mainly using Go.
• Design technical solutions for complex product and platform workflows, then own their implementation end to end.
• Work closely with engineers, product managers, content teams, and other stakeholders to understand their workflows and build effective tools.
• Work with AWS, Kubernetes, CI/CD, logging, and monitoring.
• Use AI tools actively in day-to-day development and explore AI-assisted workflows where they create real value.

What we’re looking for:

• Senior or Senior+ full-stack engineering experience.
• Strong experience with React, Next.js, and TypeScript.
• Strong backend engineering experience in Go or another backend language, with willingness to get productive in Go quickly.
• Good understanding of API design, databases, and distributed systems basics.
• Experience with cloud infrastructure, preferably AWS and Kubernetes.
• Ability to work with multiple stakeholders, clarify requirements, and turn business/product context into technical solutions.
• Product thinking: you care not only about implementation, but also about the workflow and users behind it.
• Practical experience using AI coding tools in everyday development.

Nice to have:

• Experience with CMS, content platforms, admin panels, or internal tools.
• Experience with S3, CDN, or media asset workflows.
• Experience building AI-assisted tools or integrations.
• Interest in UI/UX and building internal tools that are not only functional, but clear and pleasant to use.

Perks and Benefits:

• A newly created team with space to influence technical direction.
• Work on core internal systems that help teams across the company operate and improve our mobile app.
• AI subscriptions, tools, API keys, and experiment budget to help you work better.
• Senior-level ownership and direct product context.
• A competitive salary package based on your unique expertise, skillset, and impact on the product plus stock options.
• In-office, remote and hybrid work opportunities.
• The equipment whatever you need to be happy and productive.
• A premium SIMPLE subscription.
• 21 days annual leave, plus bank holidays (those observed where you live).
• Flexible hours. We focus on your results, not how long you spend at your desk.

About our values:

• Think deeper: We understand that in order to grow we need to make all our decisions reality-based and change our opinion based on what we learn. We appreciate data coming in various forms – quantitative and qualitative, feedback from users and colleagues, and strong and weak signals.We treat data as the main source for leveraging insights and expect people at every level to have conversations that start with data.
• Focus on impact: Results and speed matter. When we are competing to become an A-player in the digital health market, we don’t have the luxury of deliberation. We need to make decisions and changes quickly and, swiftly learn from our mistakes.We prioritize what will have the greatest impact and aren’t distracted by anything else. We create products that benefit users while we are meeting our metrics.
• Take ownership: We seek to improve all facets of our company even in ways beyond our job description. We seek and take responsibility for our actions and their impact. We value and set high expectations for our own work so that it can add to the overall quality and innovation results of the team. Each one of us is empowered to make this company a success, take the lead to resolve disagreements and systemic issues.
• Push the limits: We encourage our team to explore new ideas, challenge conventional thinking, and continuously improve work. This mindset can lead to breakthroughs in product development, improved operational efficiency, and increased competitiveness in the market. We believe that a culture and mindset of constantly striving to exceed existing standards, boundaries, or expectations that include innovation, experimentation, and a willingness to take risks, can bring us success. We don't accept what someone says as truth if we disagree with it, no matter what authority that person has in the company and express ourselves directly, not through back channels. We challenge ideas, from policy to product decisions, and always seek to understand the reason behind what we do.
• Be a Championship Team: As a part of the championship team, you must improve your own performance constantly also know your teammates, their talents and skills and be focused on a common goal and how to achieve it together. We hold each other accountable for our contribution to the shared success or failure, and we constantly look for ways to help our colleagues to improve and for us to perform better as a team. We collaborate within the team in order to compete with challengers in the outside world. We build relationships of trust. We provide our teammates with the autonomy and support they need to deliver their part of the goal.