Senior Full Stack Engineer, People Apps

Improbable

Improbable is a Venture Builder. We are working with leaders to create businesses in AI transformation, the metaverse and web3. We both create businesses from scratch and invest in existing businesses. Our central services teams work with ventures to help them achieve success; including early stage prototyping and initial product development where this role sits. At Improbable, you are surrounded by people who want to improve everything and everyone around them, and who compel you to improve yourself. We’re motivated by the fulfilment of solving hard problems to achieve something profound and transformative.   Your Mission As a Senior Full Stack Engineer at Improbable, you will work with Ventures to help them get to market faster. You will work with their leadership team, to design, prototype and launch initial versions of their product. This is a hands-on, strategic role where you will collaborate with executives, working all the way from identifying customer problems. About the Role We're looking for a Full-Stack Engineer to build across the breadth of what Somnia ships, from consumer-facing products to developer technologies to internal platform and tooling. One month that's a polished end-user app, the next it's an SDK, a CLI, or the internal systems the rest of the team builds on. This is a role for someone who cares as much about the product as the code. You'll own the full lifecycle, from rapid prototyping to deployment. You use AI tools as a multiplier and like shipping end-to-end. What you’ll be doing * Design and build production-grade products end-to-end—back-end through UI—across consumer apps, developer-facing technologies and internal platform tooling. * Build the high-performance back-ends and services these products depend on. * Create developer technologies—SDKs, APIs, CLIs, libraries and starter kits—that make the platform easy to build on. * Build internal tooling and platform infrastructure that raises the velocity of the whole team. * Work self-directed: watch the ecosystem and the team's needs, spot gaps and propose and build what moves things forward. * Work with DevRel, Marketing and BD so what you build lands with users and developers and fits go-to-market. What we’re looking for * Strong TypeScript across the full stack—this is the core of the role and our app stack. Some Golang where it fits. * Build high-quality, production-ready frontends. * Strong back-end engineering—APIs, services and the data layer behind them. * Genuine interest in crypto and on-chain products. * Strong ownership and self-direction—you generate ideas, not just execute them. * Able to turn the dial: prototype fast and loose to prove a feature out, then shift into steady-state mode to harden what's worth keeping—tests, edge cases, reliability.   Improbable Candidate Privacy Policy

Sensory-Minds

HEY, ARE YOU LOOKING FOR A NEW JOB? Or are you just a little bit curious? Cool, we might be the right place for you! Are we a match? May we introduce ourselves? We’re the SENSORY-MINDS team! We develop the ultimate experience for users of our digital products and for our customers. And also for us. We take this extremely seriously! We create an environment for our "Sensories" that leaves plenty of room for ideas and self-development. How you work is part of the experience too - hybrid or fully remote, your home base in Germany. WHAT WILL YOUR JOB BE? * Create performant, re-usable and expandable typescript code for web apps that are deployed around the world * Work with the latest and greatest tools of the web dev ecosystem like PayloadCMS, NextJS, Tailwind, ShadCN and much more * Creatively solve challenges in collaboration with others and expand the collective knowledge base * Own various tasks involved in the web development life cycle from start to finish Technology Stack * Backend: PayloadCMS, NextJS, TypeScript, gRPC, MongoDB, Redis, Docker, Kubernetes, git * Frontend: ShadCN, Tailwind CSS, tRPC, NextJS, React, TypeScript WHAT DO WE DO? SENSORY-MINDS consists of designers, UX specialists, coders, People & Culture, office team, and project leads with a focus on digital transformation. We build applications for our long-term clients. They appreciate us for our creativity and agility. You'll feel right at home here if you.. * Enjoy working in a digital and highly sociable environment * Are kind and respectful to people and animals * Take ownership and responsibility for your work * Are mindful of yourself and others WHAT YOU CAN COUNT ON * Flexible work tailored to you - hybrid or fully remote, with your home base in Germany * A family-friendly workplace – we’ve been officially awarded for creating a work environment that supports work-life balance and family needs * Reducing overtime with our 'flex friday' * A properly equipped office and sponsored massages * Regular team events, merchandise and lots of (delicious) goodies to make your life more enjoyable * Training budget and additional three free training days per year * Egym Wellpass discount * A healthy feedback culture * An Office and People & Culture team that is open to your suggestions WHAT'S NEXT? Just send us your CV or LinkedIn profile. For the hiring process at SENSORY-MINDS, we take a lot of time to get to know you. We want to make sure that you like it here and that we will be a good match. Can you imagine starting with us? Any further questions? Don’t hesitate to contact us.

Runna

We're putting together a talented team to build the #1 training platform for Runners We help everyday runners become outstanding by building an incredible app providing world-class training, coaching and community for everyone, whether you're improving your 5k time or training for your first marathon. We’re growing extremely fast! In November 2023 we closed a $6.5M funding round led by JamJar with participation from Eka Ventures, Venrex and Creator Ventures. In 2024, we were selected by Apple as one of three global finalists for the iPhone app of the year, reflecting the innovation and impact of what we’ve built & in 2025 we were acquired by Strava! Our ambition is huge: to become the go-to global leading training platform for millions of runners everywhere. We’re growing with purpose and looking for people who want to build something meaningful with lasting impact. With the recent acquisition by Strava accelerating our journey, now is a really magical time to join. 🚀 ABOUT THE CONTRACT ROLE We are looking for talented, creative and positive team players for our highly-skilled cross-functional engineering group on a contract basis. This role will collaborate closely with our modelling teams to integrate features that are core to Runna’s mission (think adapting plans around holidays and B races, supporting new cutting edge plans, and building in-app experiences around our AI/ML tooling). This will be a 6-month contract role. WHAT YOU’LL BE DOING * Architecting, building, testing and delivering new features across the full stack * Working with the Product team to identify the most suitable solution for the best customer experience * Collaborating with modelling/AI engineers to design architecture used to interface between the Runna training engine and Runna app * Always be on hand to help when help is needed on technical matters * Coaching and supporting engineers, providing guidance, mentorship, and code reviews without creating bottlenecks. * Contribute to us operate more efficiently, by building and maintaining our developer tooling and CI/CD pipeline * We rotate the responsibility of releases across engineers, so you will get the opportunity to lead the process and deploy changes to production * Impacting engineering by championing new technologies and setting standards for engineering quality WHAT YOU’LL BRING TO THE TEAM: * Very proficient in TypeScript/JavaScript development * Able to work in a highly skilled engineering team in a fast-paced, iterative environment. In 2024 we shipped: * 99 mobile app releases (iOS and Android) * 443 API releases * 237 modelling backend releases * 4+ years experience in your main expertise area (Frontend, Backend etc) * Comfortable picking up new things and working on technologies outside your comfort zone * Are skilled in delivering features end-to-end, from architecture design and building through to releasing, testing and supporting * Enthusiasm for our ways of working which include: * Iterative development, continuous deployment and test automation * Knowledge sharing, pair programming, collaborative design & development * Shared code ownership & cross-functional teams * Have experience with React Native (worked on large scale applications) * Have experience with AWS * Are experienced in delivering features full-stack BONUS POINTS IF YOU HAVE: * Are experienced in SwiftUI * Are experienced in deployment, releasing cycles or CI/CD * Have experience with Serverless architectures * Experience with Terraform or other IaC tooling (e.g. CDK, CloudFormation, etc.) * Have experience in open source contributions, including reporting bugs/issues in GitHub, testing new releases, or contributing to code OUR TECH STACK Below you can find a small reflection of our current tech stack: Frontend: * React Native (iOS and Android) * Typescript * GraphQL (Apollo Client) * Fastlane * SwiftUI (Apple Watch) * Maestro E2E tests Backend: * Serverless (AWS) * Lambdas (NodeJS & Python) * AWS AppSync * DynamoDB, S3, SQS, SNS, EventBridge, SageMaker * Snowflake All the other good stuff: * Sentry * GitHub Actions * Intercom, Mixpanel * RevenueCat * App Store Connect / Play Store * Google Tag Manager OUR INTERVIEW PROCESS: Our aim is to keep the interview process as straightforward and enjoyable as possible, and will consist of the following stages: 1. Screening call with Talent team (30 minute video call) 2. Getting to Know You + Live Coding (45-minute video call, first 25 mins will be an introductory chat followed by two live coding exercises from https://leetcode.com/) 3. 1.5-hour technical interview (the first half of the call will be used to discuss the take-home technical task from the previous stage and the second half will consist of system design and some general architecture/tech questions) Please let us know if there’s anything we can do to better accommodate you throughout the interview process - this can be from scheduling interviews around childcare commitments to accessibility requirements. We want you to show your best self in the process, so please speak to your Talent Partner