Product & Engineering Reunited

Mirco Kraenz • Full Stack Engineer • Backend Focus

Available for Contract Work

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Services

Freelance NodeJS Backend and React Frontend Development

Looking for a Senior Fullstack Engineer with 9+ years of industry experience to supplement your team?

I have successfully written integrations with complex 3rd-party banking systems for Vestr where one mistake would have cost millions of Euro, kickstarted and scaled projects from scratch that reaches enterprise customers for LiveEO's EUDR compliance solutions TradeAware which is built on top of AWS, as well as developed and maintained mobile apps with several thousand downloads with GIFTD.

I have experienced the power of great DevOps and, what I call, the 'heart of agile, lean, and devops' in action. For me, this is driven by my values of Tangible Customer Value, System Thinking, Team Work, Openness, Courage, Ownership, and finally a desire to create a peaceful, more just, and sustainable future. I am continuously helping teams improve their workflows and tools like CI/CD pipelines, localization workflows, cross-department user onboarding flows, code reviews, and mentoring.

Let's chat to find out how I can support you and your team.

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Technologies

To give you a better overview of the services I provide, here is an incomplete list of technologies I have worked with professionally in the past:

TypeScriptJavaScriptNodeJSNestJSExpressReactNextjsChakra UIMantine UIMaterial UIHTML 5Semantic & Accessible HTMLCSSService Worker & PWAReact NativeExpoReact Native PaperReduxReact ContextTanStack React QueryMongoDBPostgreSQLPostGISFirebaseContentful CMSSendgrid EmailFTP & SFTPLokalisei18nextRevenueCatGoogle Play ConsoleApp Store ConnectHubSpotMixpanelRedisRabbitMQKafkaAWS LambdaAWS S3AWS RDSAWS EC2AWS App RunnerAWS CloudWatchAWS GuardDutyAWS EventBridgeSurveyJSMapboxNx Mono repoNetlifyAuth0JWTOAuth2.0OpenID Connect OIDCPassport.jsDomain-Driven DesignEvent SourcingCommand Query Responsibility Segregation CQRSEvent-Driven ArchitectureGitLab CIGitHub ActionsTerraformPulumiServerless FrameworkAWS SAMAWS CloudFormationDockerKubernetesBashGraphQLREST APICypressPlaywrightJestChai & MochaSvelte & SvelteKitSentryWebsockets & SocketIOLaunchDarklyHerokuPlatform.shNylas Calendar SyncVonage Communications APIElasticSearch

What Partners Say

EM
Eduardo Daniel Montenegro

Senior Software Engineer / LiveEO

When I started working at LiveEO Mirco already laid the foundation for the entire application, and he did an outstanding job. His architecture was well-structured, making it easy to extend and maintain. Beyond that, he was always mindful of security and scalability, ensuring that we built solutions that were robust and future-proof.[..]

It was a pleasure working with him in the back-end, and I would gladly do so again in the future. I highly recommend Mirco to any team looking for a strong and reliable engineer.
CB
Chris Bell

Product Manager / LiveEO

Mirco and I worked together on a greenfield project for LiveEO and his impact was immediate and extensive. His ability to connect and engage with the domain and the wider strategic questions behind the product really helped to ensure we made the right initial steps. He then was able to work across a broad array of aspects of the project that needed to be set up from scratch to make this happen. I would gladly work with him again.
SM
Sven Mesecke

Product Manager / LiveEO

Mirco and I have worked together on an application that uses satellite imagery to detect deforestation in global supply chains. Mirco was part of my team since the start of this greenfield project and with his broad knowledge in the latest web technologies and in software engineering best practices, he has been extremely influential in shaping the application architecture and the technical roadmap. He goes far beyond mere implementation, he thinks and understands deeply the problem domain and shapes solutions based on this deep understanding.

We have extended our contract with Mirco again and again and I can highly recommend Mirco in any FullStack or DevOps role and would always work with him again.
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Recent Projects

LiveEO logo

LiveEO

Supply Chain Compliance solution "TradeAware" help businesses implement the EU Deforestation Regulation to protect our world's forests and biodiversity.

Role: Freelance Full Stack Engineer, DevOps, Architect

Team: 50-150 people

GIFTD logo

GIFTD

Green Tech Startup for gifting apparel and clothing, eliminating leftover stock, and thereby helping on our way to a zero-waste economy.

Role: Freelance React Native Developer, Serverless Engineer

Team: 5-10 people

miralytik logo

miralytik healthcare consulting

Healthcare consulting and benchmarking platform for hospitals and medical professionals.

Role: Freelance Backend Developer

Team: 20-50 people

Screenshot of My Little Bubble Tea Shop

My Little Bubble Tea Shop

HTML 5 Game where you manage your own little Bubble Tea Shop for Desktop and Mobile. Entry to Glamjam 2025. Written purely in Svelte, HTML and CSS.

Role: Game Developer, Designer

Team: 1 person

Daily Questions logo

Daily Questions

Self-improvement app following leadership coach Marshall Goldsmith's Daily Questions from his book Triggers. Available on Google Play Store.

Role: Product Manager, React Native Developer

Team: 1 person

CoachHub logo

CoachHub

Coaching Platform connecting companies like Amazon and SoundCloud with Coaches for one-on-one online training sessions to increase employee engagement, skills, and happiness.

Role: Fullstack Developer

Team: 50-100 people

TypeScript Teatime logo

TypeScript Teatime

My weekly stream on software development in TypeScript, about infrastructure including AWS, game development, and more.

Role: Streamer, Host, Software Developer

Team: 1 person

vestr logo

vestr

Swiss Fintech startup providing bank-integrated workflow for Actively Managed Certificates with more than 500 Million Euro managed via the platform.

Role: Senior Backend Developer, Backend Developer and DevOps Engineer

Team: 10-20 people

You are Awesome App! logo

You are Awesome App! Daily Motivation Up!

Community-driven motivational quotes for Android and IPhone. Available on the Google Play Store.

Role: Product Manager, React Native Developer, DevOps, Marketing

Team: 1 person

Contact

Let's chat to find out how I can support you and your team.

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