Junior Marketing Manager (m/w/d)

WHAT TO EXPECT We are a startup digital agency, and no two projects, clients, or even days look the same. In ecommerce we build on Shopify and Liquid and Next.js, with custom AWS microservices and apps that take Shopify well past the defaults.  On the marketing side we build highly customised sites in Next.js and React, with careful design and animation and a real focus on how the page performs and feels.  In automotive we build full platforms, from stock-car locators to configurators and more. Across all of it, we bring AI into the work through our own products. Here nothing will be fixed. You will work across changing projects and settings, on long builds that run for months and shorter spikes to figure out how a business can actually use AI, and you will help us rethink how agency work is done. Sound like your kind of place? Here is what we need from you. YOUR COMPETENCIES Mindset Is your goal to deliver great software, whether the problem is easy or hard? Do you push deeper than most to find the right solution, not just the first one that works? Then you are the person we need.  Responsibility You own what you build, all the way through, not just until it ships and becomes someone else's problem. The parts that go smoothly and the parts that get messy are both yours to see through. You bring your ideas and your curiosity, you use AI to build better and faster, and you stand behind what you put your name on. Drive You will not know everything yet, and that is fine. What we cannot teach is drive. We bring the tools and the guidance. You bring the push to grow fast, understand what you build, and keep reaching past what you know. What you bring to the table: * You work across crafts, not in a corner. You are close with developers, designers, and strategists, and you would rather build in the open than behind a wall. * You make the team better. You speak up when something can be sharper, and you share what you learn instead of sitting on it. * You care whether the client wins. You focus on the quality of the product and the experience, not just the ticket in front of you. WHAT YOU CAN LOOK FORWARD TO What you will actually do: We build complex, end-to-end products for both big-names and niche clients. You will own the frontend side of that work, plus the bits right next to it. Day to day, that means: * Turning designs into real interfaces in React and Next.js. * Building small pieces of UI and the logic behind them on your own, and taking on medium ones with a more senior engineer alongside you. * Working in an responsive team with clean tickets, clear updates, and knowing when to push on alone and when to ask for help. * You’re enjoying being part of a team, not a remote desk which prefers to work in isolation most of the time. The tech stack you will work with: * Languages and frameworks: React, Next.js, TypeScript, HTML, CSS * APIs: REST and GraphQL * Delivery: Existing CI/CD practices * AI tooling: Claude, Cursor, Pi, Antigravity, plus your and our own Skills and MCP setup Who you will work with We are a bunch of colleagues originally from similar backgrounds who got tired of how things were usually done and set out to find better ways. That is the whole reason this company exists, and it is still what we are doing. We are not a place of rockstars and egos. People here ask questions out loud, show rough work without flinching, and would rather help each other get something right than look clever alone. We push each other, in the good way, and we do not take ourselves too seriously while we are at it. You would be joining that. You’ll work closely with the crafts, designers and strategists, and just as easily with the people steering the projects and the business. There is no wall between you and any of it. Take on the parts you are ready for, and when you want more, a pitch, a client conversation, a bigger call, speak up at the right moment and the door is open. Smaller team. More ownership. Bigger work.

INTRO Hamburg Hybrid (2–3 days/week onsite) | €55.000 - 60.000 p.a. | 30 Days Vacation | English B2 Are you enthusiastic about intelligent and effective software solutions to the energy transition? Join us at suena energy as a Junior Backend Engineer (f/m/x) and become an essential part of our new platform team. You’ll work side-by-side with experienced engineers on both APIs and data-driven backend systems, gaining hands-on experience in everything from database design to real-time integrations for next-generation energy trading. This is your chance to learn, grow, and have a real impact in a friendly, ambitious, and sustainable tech environment. suena energy is a green tech startup specializing in algorithmic energy trading for energy storage systems and renewables. Our vision: a world where clean energy is used reliably, economically, and intelligently. Our AI-powered software maximizes the revenues of large-scale energy storage and renewable assets on European short-term power markets—while minimizing risk. We're a 50+ person team that's fast-paced by nature, but the kind of place where people actually look out for each other. Following our successful Series A, we're investing in expanding our team – and we're excited to strengthen our team with new talent and continue growing together! Quick Check: Is this your Engineering Playground? * Tech Stack: Python (Django/FastAPI), PostgreSQL/TimescaleDB, Redis, Celery, Docker, AWS, GitLab CI/CD, Sentry, Grafana * Your Focus: Support API and data projects, build and improve backend features, help connect real-time data and analytics, automate tasks, and contribute to both greenfield and legacy improvements * Team: Platform squad with Senior Engineers (API & Data focus), a Modelling expert, and direct CTO access—collaborative, async-friendly, pair programming, lots of mentoring * Product: Advanced energy trading & optimization platform, real-time APIs, data-driven, ML-integrated, high complexity * Who thrives here: Junior backend engineers eager to learn, contribute, and develop skills in both API and data/backend engineering * Must-haves: 1–3 years backend experience, solid Python skills, first experience with SQL databases, keen interest in APIs & data, willingness to learn new tools, collaborative mindset * Dealbreakers: No backend coding experience, no interest in both APIs and data, desire to work fully solo YOUR MISSION * Work closely with Senior Engineers to help design, build, and optimize backend features and APIs * Support the development and maintenance of databases, data pipelines, and real-time integrations * Participate in automating workflows and improving reliability, scalability, and security across the platform * Collaborate with data science, modelling, and product teams to deliver features for energy trading and analytics * Contribute ideas and improvements—whether for new greenfield projects or for optimizing legacy systems * Grow your skills through code reviews, pair programming, and regular feedback in a supportive team environment YOUR PROFILE * 1–3 years’ experience in backend development (Python, ideally with Django or FastAPI) * Hands-on experience with SQL databases (e.g. PostgreSQL) and an interest in data-driven products * Eager to learn API design, event-driven systems, and cloud tools (AWS, Docker, CI/CD etc.) * Collaborative, proactive, and open to feedback—ready to work in a team and learn from others * Good communication skills in English (B2); bonus if you have worked in international or cross-functional teams * Dealbreakers: No backend coding experience, no willingness to learn both API and data topics WHY US? * People at the Core: Clear structures, democratic decisions, and a feedback culture where your voice counts. * Shape the Future: Contribute to the energy transition by working on sustainable energy solutions in a growing market environment. * Connecting & Co-Creating: Strategy off-sites and onsite weeks for real collaboration and shared ideas. * Work Your Way: Home office and flexible hours – you know what works best for you and your team. * Good Vibes: Yoga, shared lunches, after-work fun – we keep the energy up, even when it's busy. * Body & Mind: Urban Sports Club membership, wellbeing check-ins, and mental health support – your energy matters. * New Office: 10th-floor office with rooftop terrace, canteen, great views, ergonomic desks, hardware of your choice, and a pet-friendly environment. * Sustainable Extras: Deutschlandticket, FutureBens, and more – supporting your mobility and future. WHAT ELSE? We look forward to receiving your application, earliest start is as soon as possible. If you have any questions, feel free to reach out – your contact is Kathi (Interim Talent Partner). You’ll hear back from us within 5 working days of your application. We value your time and want to make the process as transparent as possible. Once we receive your application, we’ll send you a confirmation email outlining the next steps and what you can expect from our interview process. We can’t wait to meet you! suena energy is an equal opportunity employer. We celebrate diversity and reject any form of discrimination. It is important to us to create an inclusive environment for all our team members. We want to particularly emphasize that our call for applicants is addressed to all genders. The integration of people with disabilities is an opportunity and not a problem for us, and we, therefore, welcome their application.