Executive Assistant (f/m/d) to Co-CRO

Aleph Alpha

OUR MISSION Aleph Alpha is one of the few companies in Europe doing serious foundation model pre- and post-training. We're building models that have general-purpose capabilities, and specifically excel at addressing the needs of our customers. We're looking for exceptional Software Engineers to join our model training team. Most of the team is based in Heidelberg . TEAM CULTURE At Aleph Alpha, we foster a culture built on ownership, autonomy, and empowerment. Teams and individual contributors are trusted to take responsibility for their work and drive meaningful impact. We maintain a flat organizational structure with efficient, supportive management that enables quick decision-making, open communication, and a strong sense of shared purpose. We believe a strong engineering culture is the key to model training success. We like Extreme Programming and favor trunk-based development. We often mob-program, which keeps us aligned and means we always learn from each other. ABOUT THE ROLE As a Senior AI R&D Engineer in Model Training (f/m/d), you will join our model training team in Heidelberg or Berlin. Most of the team is based in Heidelberg. The model training team is training models, but more importantly in order to do so building and improving our model training pipeline. * You will work across our full stack. Some weeks you might be optimizing how training loads are scheduled on our cluster and making the pipeline more robust and performant so we can iterate faster. Other weeks, you will be enabling large-scale code execution for reinforcement learning. And at other times, you might dig deep into our evaluation codebase to lift inference throughput on evals. * No two days are the same. Things move fast, and your ability to focus and prioritize is what lets you unblock the team day-to-day while designing the high-quality tooling and infrastructure that speeds us up long-term. * We're still building out our training pipeline and infrastructure. Some pieces exist, some do not, and you will have real influence on what gets built and how. Your work directly shapes how quickly we can experiment and improve our models. * Identifying issues and taking initiative is what drives our day-to-day work. * Working mode, design decisions, priorities are all done in your team together with your team mates. The strongest teams often use highly collaborative techniques, like mob or pair programming. * Due to the highly collaborative nature of our work you are expected to be on-site at least two days a week. If you are in Berlin, you should expect to travel around every second month for a few days to Heidelberg. * We are specifically looking to strengthen the Software Engineering in the teams which are research heavy. Major points include improving the maintainability of our code through tests and design & architecture changes. REQUIREMENTS * At its core, you need to be able to dive into a codebase, change the behavior as necessary, and after the change the code should be better tested and easier to understand than before. * As such we look for candidates for an understanding of how to design for low coupling and high cohesion paired with the ability to incrementally refactor. * Experience with the following technologies is likely to be helpful: * Test Driven Development (TDD) * Trunk based development * Continuous integration * Domain Driven Design NICE-TO-HAVES * Most of our code is in Python, there is also the occasional Rust codebase. * Large parts of our training pipeline are built on top of Kubernetes. * We do not hire for skills in a particular technology or language, but rather ability to learn and mindset, yet experience with these technologies is a plus. WHAT WE OFFER * Become part of an AI revolution! * 30 days of paid vacation * Access to a variety of fitness & wellness offerings via Wellhub * Mental health support through nilo.health * Substantially subsidized company pension plan for your future security * Subsidized Germany-wide transportation ticket * Budget for additional technical equipment * Flexible working hours for better work-life balance and hybrid working model * JobRad® Bike Lease

Joko

At Joko, we help consumers shop smarter. Our mission is to revolutionize shopping, empowering people to find what they need, make informed decisions, and save money. Founded in Paris, Joko is a tech company and certified B Corp with over 105 talents across Paris, Barcelona, and New York (and beyond). More than 6 million users already save money every day at 10,000+ merchants with Joko. From cashback and automatic coupons to price alerts and carbon tracking, we keep expanding our products to make shopping smarter. We’re now building an AI-powered shopping assistant to help users find the best products by price, quality, and environmental impact. Having reached profitability in our core market, we’re now scaling globally, with a strong focus on the US. It’s still day 1, come build the future of shopping with us! This position is based in Paris. 🔥 THE CEO OFFICE The CEO Office is a hands-on team of high-potential generalists who lead Joko's strategic projects and, when needed, step in to reinforce teams on short to medium deployments. You'll take over a team of five Founder Associates, with room to grow as the company scales. As the leader of that team, your job is to build a team people are proud to be part of, where every Founder Associate grows quickly and contributes meaningfully to Joko’s most important priorities. 🎯 WHAT YOU WILL DO You'll be the CEO's strategic partner at a specific, rare moment in a company's life: a profitable scale-up entering its international chapter, expanding new business lines, doubling in headcount over the next 18 months, and investing heavily in AI — with a mature leadership team, a culture worth protecting, and a team that demands excellence. You'll report directly to Xavier (CEO), partner closely with co-founders Nicolas (CRO) and Alexandre (CTO), and serve as secretary of the Steering Committee, which is composed of the founders, the CMO, the COO, the VP People, and the Head of Online — putting you at the heart of every strategic decision the company makes. The Chief of Staff role is built around the CEO, and the CEO Office is in turn built around the Chief of Staff — together, the team exists to act as an extension of the CEO. The mandate is fourfold today, and you'll be the architect of all four pillars (as well as the future ones). 1. Governance. Your team and you will own the rhythm and quality of how Joko is run at the top — board meetings, executive team meetings, All Hands, and the communication cadence that ties them together. You'll play a central role as animator and alignment driver for the leadership team. 2. Proactive projects. Your team and you will lead the company-wide initiatives that matter most to the CEO and to Joko's next chapter — the kind of cross-functional, high-stakes work that doesn't naturally fit any single team. 3. Reactive missions. When a team needs short-term reinforcement, you'll deploy Founder Associates as a strike force, helping us address critical gaps without hiring in a rush. This will represent a decreasing share of the team's activity as the organization grows. 4. Culture. Like every member of the SteerCo — and like the CEO — you'll be expected to embody Joko's culture and lead by example. A word from Xavier "This is one of the most consequential hires I'll make this year. I'm looking for a real partner — someone with the rigor to challenge my thinking, the architectural mind to build durable systems, and the warmth to carry our culture as we scale. The Chief of Staff is, in many ways, an extension of me, and the right person will shape Joko's next chapter alongside Alex, Nico, and me." — Xavier Starkloff, CEO 👀 WHO WE'RE LOOKING FOR * 10+ years of experience, combining Tier 1 strategy consulting (BCG, McKinsey, Bain, or equivalent) with operating experience in a high-growth tech startup or scale-up. * Direct and substantive management experience, with a proven ability to hire and retain great talent. * Architectural thinking: You're as comfortable designing a multi-quarter operating model as you are fixing a broken process. You think in systems, not tasks. * Analytical rigor: Structured thinking, attention to detail, comfort with numbers, ability to write a board memo that holds up under CEO and investor scrutiny. * Emotional intelligence and stakeholder management: This role lives at the intersection of the CEO, the SteerCo, the Founder Associates, and every team in the company. You read people well, you build trust quickly across very different stakeholders, and you handle sensitive conversations with care. * Energy: You bring genuine drive and presence into a room. You'll be one of the cultural carriers of the company and a representative of the CEO. * AI fluency: You already use AI tools fluently in your own work, you have a point of view on how they reshape how teams operate, and you're excited to help Joko go further — the CEO Office is expected to lead by example on this front. * Efficiency: You're fluent in productivity tools, ruthless about prioritization, and known for delivering on time across complex projects with many stakeholders. You instinctively look for the highest-leverage version of any task. * Entrepreneurial mindset: You thrive in fast-moving, ambiguous environments. You take ownership without being asked, you welcome feedback, you're an insatiable learner, and you go the extra mile by default. * Languages: Fluency in English. * Location: Paris-based. Bonus: M&A, corporate development, and/or corporate finance exposure. 💎 OUR PERKS (Some of the benefits listed below are available to full-time positions only) At Joko, we believe that flexibility and trust are essential. Our work environment reflects this through: * Flexible remote : If you live in Paris, you can choose to work from our office or from home with no constraints. If you live elsewhere, we can provide access to a coworking space and a coworking budget. * Work from anywhere : Want to spend a month in Italy while working? You can work from most countries in the world for up to 3 months per year. On top of that, we offer plenty of perks: * 💸 Top-market compensation * 📈 Equity for everyone with the chance to own a piece of what you build * 🤖 Half-day each week dedicated to leveling up with AI by exploring new tools, iterating hard, and sharpening your skills * 🌴 Yearly offsite in amazing locations and budget for team-building events & monthly in-person gatherings * 💪 Contribution to your ClassPass subscription * 🍼 8-week leave paid 100% for the second parent * …and much more, check the full list here! 🤝 OUR HIRING PROCESS 1. Intro call: Quick screening with the Hiring Manager or the Talent team. 2. Step 1 – Team interview (45 min): Conversation with two Joko team members (could include the Hiring Manager, people from the team you’d join, or colleagues from other teams). 3. Step 2 – Role-specific assessments * For non-engineering roles: A take-home case study followed by a 45-min interview. We assess both your output and how you think in real time. The exercise will be relevant to your role (e.g. analysis, strategy, or process design). * For engineering roles: A 90-min live technical interview on CoderPad covering code understanding, review, system design, and product thinking (with AI serving as a collaboration tool). 4. Step 3 – Leadership interview (45 min): Conversation with a SteerCo member and a Founder. 5. References: Up to 3 calls with former colleagues or managers. ☕ You may also be invited for coffee with team members to get a feel for our culture.

VARM

DEINE MISSION * You become an extension of the CEO's judgment: trusted to represent their priorities, take full ownership of strategic projects, and protect their time and focus * You context-switch constantly – strategy one hour, an operational fire the next – without losing the thread on what matters most company-wide * You bring calm, structure, and follow-through to a fast-moving environment, turning the CEO's intent into reliably executed outcomes DEIN PROFIL * You bring 2–4 years of experience in a fast-paced startup or scale-up environment, consulting, investment banking, or VC – for example as a Strategy Consultant, Management Consultant, Investment Banking Analyst/Associate, VC Analyst/Associate, Founder's Associate, Business Analyst, Business Operations Manager, or Project Manager * Alternatively, you bring at least 2 years of experience as a Founder, Co-Founder, or Managing Director of your own company – whether it scaled, exited, or taught you hard lessons * Strong analytical and problem-solving skills paired with a proactive, hands-on mindset * You communicate fluently in both English and German, written and verbal, and can convey complex ideas concisely to different audiences * You thrive in a dynamic, rapidly changing environment and are a self-starter with a high sense of ownership and the ability to work independently * Genuine interest in contributing to our goal of energy-efficient buildings and a sustainable future This role is ideal for you if... * you enjoy pulling the strings behind the scenes and care more about outcomes than the spotlight * you want to bring structure to chaos without becoming rigid yourself * you're looking for a close, eye-level working relationship with a founder/CEO * you're coming from a role as Founder's Associate, Executive Assistant to the CEO (strategic), Business Operations Manager, or Junior Chief of Staff – and this is your next step WARUM WIR? Join one of Europe’s fastest growing climate companies, fresh off a €17.5M Series A! Our Benefits: * Competitive compensation package: We will offer you a mix of cash and stock options based on your appetite for upside * Be part of our core-team, building in a super-hot phase of an early-stage climate-tech startup * Make an impact at VARM: Shape our culture and the way we work and collaborate together. Nothing is set in stone – you have a direct impact, while we are growing and building together * Make an impact on the earth: Do you want to make a difference in the fight against climate change? Become part of the solution and actively shape the energy transition * Onsite first, but hybrid work keeps us flexible: We believe that in-person collaboration is an integral part of working together, but offer flexibility for remote working * Grow with us: We take your personal development seriously, which includes being mentored and challenged in regular founder feedback sessions * Start–up culture: We offer you hybrid work, training, team events, and a great office setup in the heart of Kreuzberg * Discounted fitness programs * Diversity & Inclusion: We value diversity and welcome people from all backgrounds