Backend Developer

You will become a key player in our engineering team. Your mission is to build, scale, and optimize the core backend systems that power our platform:

• Build AI-First: Use Claude Code as your default workflow – from scoping and prototyping to refactoring and test coverage. You’ll help shape how our team works with coding agents: what we automate, where we keep humans in the loop, and how we hold quality steady as output volume goes up.
• Build High-Impact Features: Design, build, and deploy scalable backend services that deliver tangible business value and enhance the platform experience for our customers.
• Ensure Quality & Reliability: Write clean, maintainable code backed by robust unit and integration tests to guarantee high performance, security, and continuous deployment stability.
• Architect for Scale: Partner closely with our CTO and technical architects to optimize platform performance, high availability, and backend system architecture.
• Tackle Operational Challenges: Proactively identify and resolve technical edge cases and operational challenges alongside the engineering team.
• Innovate & Modernize: Stay ahead of software engineering trends, evaluating and introducing modern technologies and practices that elevate our tech stack and team workflow.
• Collaborate Cross-Functionally: Work hand-in-hand with frontend developers, product managers, and operational teams to transform product requirements into seamless technical solutions., * Real Impact & Freedom to Innovate: In our dynamic scale-up environment, you have the freedom to initiate and implement innovative technical ideas, shape our backend architecture, and see your code directly impact millions of users.
• Mentorship & Technical Growth: Accelerate your career through hands-on technical coaching and regular 1-on-1 feedback sessions directly with our CTO and platform architects.
• Choose Your Own Hardware: Work with the hardware and operating system you perform best with (Mac, Linux, or Windows).
• Hybrid Setup: Enjoy a flexible work setup with two home office days and three office days per week.
• Flexible Perks: A monthly budget for a perk of your choice (e.g., Edenred meal vouchers or public transport) and a discount on all checkyeti outdoor activities.
• Social Events: Become part of the checkyeti community! We host a mix of team and company-wide events at least once per quarter to celebrate our successes together.
• Office Wellness: Stay fueled with free barista coffee, fresh fruit, and cold beverages in the office. Plus, stay active with free access to our shared company cards for the John Reed gym located right in our building.
• Prime Vienna Location: Work with an international team in the heart of Vienna, right next to the State Opera. For those moving to the city, we’ll share all our best local tips and tricks to help you navigate and enjoy your new life in the city!

You are a quality-driven software engineer who combines strong core Java expertise with fluency in AI coding agents, plus a passion for scalable system architecture, proactive problem-solving, and continuous value delivery.

• AI-Native Engineering: You already work with coding agents daily and have opinions about it – where they save you hours, where they quietly produce garbage, and how you review generated code before it reaches a PR. You’re comfortable being accountable for code you didn’t type line by line.
• Core Engineering Expertise: 3+ years of hands-on Java. Experience with Spring Boot and reactive programming is a strong plus.
• Database & Data Architecture: You have 2+ years of experience working with relational databases like MySQL (exposure to Redis, MongoDB, or Elasticsearch is a great plus).
• Ownership: You thrive when taking full responsibility for your work – from initial architectural discussions to writing clean code, deploying, and maintaining feature health.
• Pragmatic Team Player: You communicate openly, actively seek and give constructive feedback. You bring flexibility, strong commitment, and stay focused on shipping reliable, well-tested code in an agile environment.
• Linguistic Skills: Professional fluency in English is essential as it is our company’s daily working language., * AI-Native Engineering
• coding agents
• Java
• Spring Boot
• reactive programming
• relational databases like MySQL, * English B2

A gross annual salary from EUR56,000, with willingness to overpay depending on experience and qualifications., Full Time (Permanent employment)

• Monday to Friday
• 38,5 hours

bei checkyeti GmbH Wien heute

Are you passionate about the outdoors and ready to make an impact at Europe’s leading platform for outdoor activities?

checkyeti is seeking a Backend Developer who thrives on variety and impact – someone who ships fast and still holds a high bar on architecture, testing, and code they can defend in review. In this position, you’ll take direct responsibility for the services that power our platform and build them with AI agents as a core part of the workflow.

How We Work at checkyeti checkyeti is Europe’s leading platform for outdoor activities, connecting travelers with 16,000+ adventures across 1,500+ destinations.

At checkyeti, we thrive on a collaborative culture where cross-functional teams – from Marketing to Business Development and Operations – work hand-in-hand. Our flat hierarchy ensures that everyone, regardless of role or seniority, is empowered to make a real impact from day one.

Within the Product team, we build event-driven microservices running on AWS, primarily powered by Java, Spring Boot, and Project Reactor. We manage data using MySQL, MongoDB, Elasticsearch, and Redis, and maintain fast continuous delivery (releasing multiple times weekly) using automated CI/CD pipelines with Docker and Jenkins within an agile framework. Our platform’s AI features run on GCP with Gemini, and we use Claude Code day to day to move faster.