Stage - Assistant(e) Comptable (H/F) - Paris

Centre for Effective Altruism

ABOUT CEA The Centre for Effective Altruism (CEA) stewards the movement of people putting effective altruism principles into practice to solve the world’s most pressing problems. We’re working to build a flourishing future by applying evidence, reason, and compassion to challenges like global poverty, animal suffering, and existential risks. Our work centers on growing and supporting a global community of people who rigorously analyze where they can do the most good – and take action on those insights. Current strategic priorities include increasing understanding of effective altruism and its principles, growing the number of people who are motivated by EA principles to take significant action to address pressing problems, and diversifying funding sources for high-impact work. We had significant success in 2025, building momentum within CEA. Our headcount grew from 42 to 66 core staff. Program participation (e.g., events, courses, groups) grew by 20-25% year over year. We merged with EA Funds and are rapidly scaling up our capacity for grantmaking and associated fundraising: our first Fund staffed with full-time employees (EA Animal Welfare Fund) raised almost as much as the previous three years combined. In 2026, we’re maintaining ambitious momentum while building the foundations for a step-change in the wider EA ecosystem’s growth trajectory from 2027 onwards. ABOUT THE TEAM The team behind the Opportunities Board is responsible for helping people discover and pursue high-impact career opportunities. We combine product development, user research, marketing, engineering, and operations to build and improve a product that helps people find impactful work and better understand how they can contribute to solving the world's most pressing problems. As Product Lead, you'll own the board's strategy and day-to-day development, working with software engineers, contractors, and colleagues across CEA to grow the product and maximise its impact. CEA’s Opportunities Board is a free, curated board of high-impact opportunities, hosted on effectivealtruism.org. It brings together full-time roles, fellowships, internships, volunteering, and courses helping people find impactful work and understand how they can contribute to the world’s most pressing problems. The board was revived in early 2025 and given focused attention in early 2026; monthly visitors have grown from around 1,500 at the start of 2025 to around 7,900 now. Early signals on product-market fit are encouraging: of the respondents to our most recent survey, 36 out of 45 said they would be very disappointed if they could no longer use the board, and around 32% of visits click through to view an opportunity. The opportunity here is growing. The 80,000 Hours job board provides a strong precedent and track record for the impact potential of this kind of service, but has narrowed its focus toward AI and is featuring fewer non-AI roles, leaving a gap for a broad, trusted board covering opportunities within a wider range of top problems. The board’s goal is to increase the number of people who land high-impact roles, both by helping them find and apply to specific opportunities, and by helping earlier-stage people orient, build skills, and work out where they fit. The board is now shifting from initial discovery into validating and scaling the model. We have evidence of demand, healthy engagement, and a plausible path to cost-effective impact at scale. What is needed now is a capable operator to own the board, grow it, and chase the ceiling of just how much impact this can generate. ABOUT THE ROLE You'll own the strategy and execution of CEA's Opportunities Board. The board has strong early traction, but there are two outstanding big questions: can we drive enough traffic to the board, and can we convert from traffic to placements into high-impact roles at a high enough rate? The track record of comparable job boards (especially 80,000 Hours) provides strong precedent here, but we need to experiment and validate that we can drive impact at scale through our own board. Alongside answering these, there are larger opportunities to explore: a logged-in experience with CV upload and matching, an AI career advisor, or evolving the board into a myriad of potential more comprehensive products helping people to land new high-impact roles. You'll inherit a working product with existing infrastructure, growing traffic, and a body of evidence about what's working and what isn't, including user research and a detailed handover document. Your job will be to use that foundation to grow the board's reach and its positive impact; iterating on the product itself while testing and refining the marketing channels that will drive sustainable growth. You'll combine product thinking with hands-on execution. You'll make strategic calls about what to focus on and what to drop, then build it; shipping changes to the board, running marketing experiments, setting up tracking, and exploring new directions. You'll be able to work with contractors, such as for marketing experiments or curating the board's listings, and with our staff software engineers to make technical changes. You will have flexibility to choose what to handle yourself, delegate, outsource, or automate. One version of success in this role is getting the board running well with little ongoing input: quickly making the highest priority improvements or automating enough of the work that running the board takes only a small fraction of your time, and then taking on another responsibility within CEA. That might be management of another product, launching a new product, AI uplift responsibilities, or a product engineering role, depending on the skills and expertise you bring. You'll report at first to Jamie Harris, our Courses Project Lead who has been advising on the initial testing and development of the board, potentially shifting to a new manager once we hire a Head of Digital Product later in the year. KEY RESPONSIBILITIES PRODUCT DELIVERY AND IMPROVEMENT * Iterate the board’s framing, UX, and features to better serve target users and increase the rate at which they find, apply to, and land high-impact opportunities * Ship improvements to the board, either working hands-on in the codebase or delegating to software engineers: filters, search, SEO and AEO pages, tracking * Improve the sourcing and curation of high-impact opportunities, likely delegating the day-to-day work to a virtual assistant or contractor * Run experiments with clear success criteria across every stage of the theory of change, from growing traffic to increasing the rate at which users land high-impact roles * Build the tracking and evaluation needed to understand whether, how, and for whom the board is working, including placement data, conversion, and retention GROWTH AND MARKETING * Develop and test a marketing plan to grow traffic to the board reliably and repeatedly, likely in collaboration with contractors * Find the channels that work, and double down on the most cost-effective and repeatable ones * Prioritise and optimise targets across traffic, engagement, and placements PRODUCT STRATEGY * Refine the target audience, the user needs you’re addressing, and the board’s curation and feature set * Continue to test and (in)validate the open strategic questions: whether the board leads to placements, and whether traffic can be grown enough for the board to be cost-effective at scale * Explore the larger opportunity in this space and decide which bigger bets to pursue, for example a logged-in experience (CV upload, profiles, and matching), an AI career advisor, or evolving the board into a broader careers product WHAT WE’RE LOOKING FOR You might be a great fit for this role if you have: * A product-development mindset: You understand what makes products compelling, and can design experiments with clear success criteria and make hard decisions based on data (qualitative and quantitative) * Impact focus: You are laser-focused on achieving exceptional levels of positive social impact through your work and the product, and strongly align with effective altruism principles * Strategic thinking skills: You have a track record of setting a clear vision, developing actionable strategies, and adapting plans based on new insights and evidence * Marketing instinct: You can attract and grow an audience and run acquisition experiments across channels such as paid ads, SEO and answer engine optimisation, email, and social * Comfort with delegating and managing: You can brief and coordinate software engineers, plus contractors like marketers or virtual assistants, to get work done * Execution velocity: You ship things. You don’t just theorise about new ideas, you build and test them * Scout mindset & reasoning transparency: You actively seek out evidence that challenges your assumptions, change your mind when warranted, and explain your reasoning openly * Familiarity with the impact-focused talent landscape: You understand the impact-focused career and talent landscape well enough to curate the board sensibly and to hold your own in conversations with people working in unusually impactful cause areas * (Bonus) Technical execution: You’re comfortable building and shipping changes to a live web product, working hands-on in the codebase with (or without) the help of AI coding tools * (Bonus) Experience with job boards, marketplaces, or other two-sided products, or with growth, SEO, and scaling digital products * (Bonus) Appetite for exploring new directions: You’re excited to explore and build bigger bets, like a logged-in experience or an AI career advisor, and comfortable with the ambiguity of zero-to-one work, not only optimising what already exists We don't expect one person to be excellent at all of these. Strong candidates will be excellent at several and willing to grow into the rest, and you'll be able to lean on collaborators and contractors to cover areas you're less comfortable with, for example bringing in marketing or engineering support where useful. OTHER INFORMATION * This is a full-time, remote position. We prefer applicants who are able to work in time zones between US Pacific Time and CET. We have an office in Oxford, UK, that you would have access to. * Start date: September 2026 or sooner * Reports to: Jamie Harris, Courses Project Lead * Compensation * US: total compensation package of $109,867, comprising a base salary of $99,879, and a 10% unconditional 401k contribution. * UK: total compensation package of £66,095 , comprising a base salary of £60,087 , and a 10% pension contribution. * Other locations: For candidates outside the US and UK, we base compensation on our UK salary structure and adjust for the cost of employment and fixed local benefit costs to create an equivalent package * Benefits in the US/UK include private health insurance, flexible work hours, a $6,000 / £5,000 annual professional development allowance, a $6,000 / £5,000 mental health support allowance, extended parental leave, ergonomic equipment, 25 days of paid vacation, and more. * This role will involve travel. There are likely 2-4 trips annually, including several international trips to attend team retreats and events worldwide. We are committed to fostering a culture of inclusion and encourage individuals with diverse backgrounds and experiences to apply. We especially encourage applications from self-identified women and people of colour who are excited about contributing to our mission. The Centre for Effective Altruism is an equal opportunity employer. If you need assistance or an accommodation due to a disability, or have any other questions about applying, please contact jobs@centreforeffectivealtruism.org. CEA participates in E-Verify for US employees. We are committed to protecting your data. See our privacy policy for more information. EVALUATION PLAN We expect the interview process to include the following steps, subject to minor changes: * Application Review * Test task * Screening Interview * Final interviews (2, one culture-fit, one with Hiring Manager) * 1 day work trial (task based) * Reference checks

Centre for Effective Altruism

ABOUT CEA The Centre for Effective Altruism (CEA) stewards the movement of people putting effective altruism principles into practice to solve the world's most pressing problems. We’re working to build a flourishing future by applying evidence, reason, and compassion to challenges like global poverty, animal suffering, and existential risks. Our work centers on growing and supporting a global community of people who rigorously analyze where they can do the most good – and take action on those insights. Current strategic priorities include increasing understanding of effective altruism and its principles, growing the number of people who are motivated by EA principles to take significant action to address pressing problems, and diversifying funding sources for high-impact work. We had significant success in 2025, building momentum within CEA. Our headcount grew from 42 to 66 core staff. Program participation (e.g., events, courses, groups) grew by 20-25% year over year. We merged with EA Funds and are rapidly scaling up our capacity for grantmaking and associated fundraising: our first Fund staffed with full-time employees (EA Animal Welfare Fund) raised almost as much as the previous three years combined. In 2026, we’re maintaining ambitious momentum while building the foundations for a step-change in the wider EA ecosystem’s growth trajectory from 2027 onwards. ABOUT THE TEAM The Courses Team runs online programmes that inspire and empower talented people to explore the best ways that they can help others. We provide structured guidance, information, and support to help them take tailored next steps that set them up for high impact. As part of this team, the Career Bootcamp is a free, 4-day online program that helps accomplished professionals identify high-impact career opportunities, develop actionable career plans, and take concrete steps toward impactful career transitions. ABOUT THE ROLE We're hiring a Career Bootcamp Lead to lead the strategy, execution, and growth of CEA's Career Bootcamp. You will take ownership of a program that helps accomplished professionals identify high-impact career opportunities, receive feedback on their plans, and take concrete steps toward career pivots that address the world's most pressing problems. You will build on a strong foundation. The bootcamp was developed in 2025 through extensive user research, piloting, and rapid iteration, aiming for genuine product-market fit before investing in scale. We ran 6 cohorts with 137 graduates in our first year. Our initial public launch drew 713 applications without any paid marketing, exceeding benchmarks from comparable programs (which typically receive 100–500), and our most recent launch drew another 1,818 applications. Likelihood to recommend has ranged from 7.9 to 9.1 out of 10, and graduates have gone on to work at high-impact organisations including Secure Bio, the Centre for the Governance of AI, Coefficient Giving, New Roots Institute, the Centre for Effective Altruism, and Probably Good, as well as founding their own new nonprofits. You will lead the next stage of the bootcamp's growth as it transitions from discovery to scale. We are actively testing paid advertising, sponsorships, and partnership channels to reach accomplished professionals beyond the existing EA community, while expanding delivery through contract advisors to support larger cohorts. The format is inherently scalable, requiring less staff time per participant and fewer logistical bottlenecks than most alternatives. Our goal is to more than double the number of bootcamp graduates in 2026 while laying the groundwork for much more ambitious growth in 2027. You will have the autonomy to answer some of the most important questions about how the bootcamp can achieve highly cost-effective impact at scale. Which audiences should we prioritize, and how do we reach them? Which formats and features drive the strongest outcomes? How do we improve product-market fit and success at every stage of the theory of change—from first hearing about the bootcamp to landing a high-impact role? These are open questions with many promising directions to explore, and you'll have the autonomy to make the calls. You will inherit a working program with existing content, infrastructure, and a growing body of evidence about what's working and what isn't. Your job is to use that foundation to scale the product and grow its positive impact, iterating on the bootcamp itself (content, format, features, audience) while testing and refining the marketing channels that will drive sustainable growth. You will combine product thinking with hands-on execution, making strategic decisions about what to focus on and what to drop before designing experiments, editing content, iterating on marketing, running cohorts, and evaluating results. You'll manage contractors (virtual assistants, advisors, marketers) and have the opportunity to build a team around you as the bootcamp's impact grows. You'll report to Jamie Harris, our Courses Project Lead, within the Community Growth coalition led by Jessica McCurdy, Director of Community Growth. KEY RESPONSIBILITIES PRODUCT SCALING * Achieving ambitious growth targets for the Career Bootcamp. * Developing a marketing plan to reliably and repeatedly attract promising participants. * Building the capacity, including staffing, expertise, and funding relationships, needed to support sustainable growth. * Maintaining the quality and cost-effectiveness of the bootcamp as it scales. PRODUCT DELIVERY AND IMPROVEMENT * Refining the bootcamp to increase sign-ups, participant satisfaction, and cost-effectiveness, including developing and improving content, design, features, and program formats. * Iterating on messaging and marketing to better attract accomplished professionals. * Designing and running experiments with clear success criteria, while building evaluation systems across every stage of the bootcamp's theory of change—from increasing applications to improving the rate at which alumni transition into high-impact roles. * Making evidence-based decisions about where to iterate, what to scale, and what to stop. PRODUCT STRATEGY * Setting the strategic direction of the bootcamp, including making hard decisions about what to prioritize and what to stop in order to maximize impact at scale. * Refining the target audience, the user needs the bootcamp addresses, and the program's features, such as 1:1 advice, expert Q&As, and AI assistance. TEAM MANAGEMENT * Coordinating contractors, including advisors, marketers, and virtual assistants, to ensure successful delivery of the bootcamp. * Building and leading a team as the bootcamp's impact and scale grow. Depending on how the bootcamp evolves, there could also be scope for the Bootcamp Lead to take on other responsibilities related to CEA’s Courses portfolio. WHAT WE’RE LOOKING FOR You might be a great fit for this role if you have: * A product-development mindset: You understand what makes products and programs compelling, and can design experiments with clear success criteria and make hard decisions based on data (qualitative and quantitative) * Impact focus: You are laser-focused on achieving exceptional levels of positive social impact through your work and the product, and strongly align with effective altruism principles * Execution velocity: You ship things. You don't just theorize about new offerings – you’re able to build and test them * Strategic thinking skills: You have a track record of setting a clear vision, developing actionable strategies, and adapting plans based on new insights and evidence * Content creation skills: You can write and edit high-quality content (e.g. written activities, calls) and marketing copy. We have existing materials and you can work with contractors, but you’ll need to be able to implement your ideas to iterate and improve the product * Strong interpersonal skills: You can build relationships across cultures and engage with diverse stakeholders, and can apply this skillset both in high-level strategic discussions and practical project implementation * Scout mindset & reasoning transparency: You actively seek out evidence that challenges your assumptions, change your mind when warranted, and explain your reasoning openly * People management potential: You are excited to manage and motivate contractors and direct reports. You have successfully led and developed team members and can deliver results through others, or if you haven't already led a team, you are ready and excited to start and to improve your management skills over time * Career advising judgement: You have substantive understanding of the impact-focused career landscape and can hold your own in conversations with people working in unusually impactful cause areas. * (Bonus) Experience with scaling online courses, career advising products, or EA community-building services * (Bonus) You’ve made or are making a career pivot yourself OTHER INFORMATION * This is a full-time, remote position. We prefer applicants who are able to work in time zones between US Pacific Time and CET. We have an office in Oxford, UK, that you would have access to. * Start date: September 2026 or sooner * Reports to: Courses Project Lead * Compensation * US: total compensation package of $131,988, comprising a base salary of $119,989, and a 10% unconditional 401k contribution. * UK: total compensation package of £79,402, comprising a base salary of £72,184, and a 10% pension contribution. * Other locations: For candidates outside the US and UK, we base compensation on our UK salary structure and adjust for the cost of employment and fixed local benefit costs to create an equivalent package * Benefits in the US/UK include private health insurance, flexible work hours, a $6,000 / £5,000 annual professional development allowance, a $6,000 / £5,000 mental health support allowance, extended parental leave, ergonomic equipment, 25 days of paid vacation, and more. * This role will involve travel. There are likely 3-6 trips annually, including several international trips to attend team retreats and events worldwide. EVALUATION PLAN We expect the interview process to include the following steps, subject to minor changes: * Application Review * Test task * Screening Interview * Final interviews (2, one culture-fit, one with Hiring Manager) * 1 day work trial (task based) * Reference checks We are committed to fostering a culture of inclusion and encourage individuals with diverse backgrounds and experiences to apply. We especially encourage applications from self-identified women and people of colour who are excited about contributing to our mission. The Centre for Effective Altruism is an equal opportunity employer. If you need assistance or an accommodation due to a disability, or have any other questions about applying, please contact jobs@centreforeffectivealtruism.org. CEA participates in E-Verify for US employees. We are committed to protecting your data. See our privacy policy for more information.

Isar Aerospace

Mission Brief  As AIT Technician, you will join us on the arctic island of Andøya, and – as part of a small local AIT team – support onsite assembly, integration, test, and launch activities. Together with our dynamic multinational AIT and design teams based in Germany, and the local operations crew you will ensure flawless and timely delivery of flight hardware, and smooth conduction or test and launch campaigns. Your Role in Our Space Mission:  * Shaping the launch site: Continuously improve the AIT infrastructure, and help develop it to compete with world class AIT facilities around the globe * High-Precision Assembly: Precise assembly of advanced space components * Machining Carbon Fiber Composites: Working with cutting-edge carbon fibre materials * Component and Assembly Testing: Validating the functionality of individual parts and complete assemblies * Test and Launch Support: Assisting in setting up and preparing the flight hardware for stage testing and launch * High Cleanliness Standards: Maintaining high cleanliness standards to ensure component integrity * Detailed Documentation: Accurately documenting work processes to maintain high standards and quality * Compliance with Standards: Ensuring adherence to industry standards and regulations * Process Improvement: Contributing to continuous process improvement Qualification Checklist  * Completed vocational training as an aircraft mechanic specializing in production engineering, maintenance, engineering or comparable training in accordance with the requirements * Several years of professional experience in the field of aviation and/or aerospace * Excellent teamwork * Knowledge of gas/fluid bolting techniques * Good drawing skills, spatial awareness and good technical understanding * Willingness for occasional assembly work at different locations * High attention to detail and quality * Ability to work under pressure and in a highly dynamic environment * Foundational knowledge of computer and software applications * Well organized mode of working * Physical dexterity is required as working in confined spaces is necessary (including the ability to lift 25kg without assistance) * Class B driver’s license * Fluent in English (Norwegian and/or German are helpful) Bonus Skills * Any type of machinery licenses (forklift, craning, etc.) * Experience working with hazardous materials or systems under pressure Benefits  * Employee Participation Program: Share in our success through our virtual company share program * 6 weeks of vacation: Enjoy the days off to relax and recharge * Subsidised lunch: Stay energised with delicious, subsidised lunches every day * Relocation support: Benefit from our relocation bonus with deductible expenses up to an agreed amount * Wellness allowance: Stay healthy and fit with our yearly allowance for wellness activities (e.g., Gym, Massages) * Individual learning allowance: Grow your skills with an individual learning budget granted after the probation period * Physical and mental well-being: Access via OpenUp the online support from certified psychologists and lifestyle experts at no cost to you and your family * And Much More! Discover additional perks and benefits when you join our team.   Who we are We are Isar Aerospace and we are at the forefront of New Space building a modern space business to enable faster, better and cheaper access to space. Our mission is to help democratise space and use it for good in order to improve life on Earth now and for the future generations. We are a fast-growing company aiming to provide sustainable and environmentally friendly launch solutions for small and medium-sized satellites and constellations into Low Earth Orbit. The company is privately funded by world-leading technology investors with strong commitment and support and our team is made of driven and talented people with a real passion for space innovation. We're making rockets in a way that hasn't been done before disrupting a traditional industry. If you are up for the challenge, want to work on cutting-edge projects and be part of a team changing the world for better, come, join us and launch your career! Want to find out more about us? Visit www.isaraerospace.com   Data Protection We process your personal data for the purpose of managing the recruitment process and assessing your application. For detailed information on how your data is processed, including your rights, please refer to our Privacy Policy.   Disclaimer Isar Aerospace SE is an equal-opportunity employer committed to fairness and inclusivity. We do not prioritize any specific religion, gender, nationality, or background. Due to security clearance requirements, affiliations with countries listed under § 13 para. 1 no. 17 SÜG may affect the application process. All qualified applicants are encouraged to apply. We use Metaview to record interview audio so our team can review it later and stay focused during the conversation. We will record interviews only if you opt in. Please note that we will request your consent separately during the interview process. Participation is completely voluntary and will not affect your application in any way. For more information on how we process your personal data, please see our Privacy Policy