
Catawiki · Belgium; Netherlands
At Catawiki, every day brings the extraordinary! Whether it’s Daniel Ricciardo’s Formula 1 Car, a Woolly Mammoth’s Skeleton, Lady Gaga's Jumpsuit or Usain Bolt’...
At Catawiki, every day brings the extraordinary! Whether it’s Daniel Ricciardo’s Formula 1 Car, a Woolly Mammoth’s Skeleton, Lady
Gaga's Jumpsuit or Usain Bolt’s running shoe, we encounter exceptional objects every day.
We’re a one-of-a-kind marketplace for buying and selling special objects. Each week, more than 100,000 unique items are auctioned,
all carefully curated by our passionate in-house experts.
Having sold over 25 million unique objects, our mission is to become the world’s most popular destination for special objects. As
a growing, diverse and sustainable scale-up, we proudly live by three core values. If these values resonate with you, we’d love to
explore how you can join us.
As a Stamps Expert for the Benelux market, you will curate high-quality auctions that attract engaged bidders and trusted sellers.
Your expertise ensures that every lot meets the right standards of quality, relevance, and transparency. You play a key role in
maintaining fair and compelling auctions by combining deep market knowledge with strong commercial judgement, contributing
directly to the success and growth of your category.
This is a 100% remote role based in the Netherlands or Belgium.
our flat structure, every role has a broad scope and directly impacts both our customers and the business.
support your career progression.
foster an inclusive and queer-friendly environment where everyone is encouraged to bring their full self to work.
extra day off each year to “Pursue Your Passion”. We also offer additional leave for key work anniversaries and important life
events. Benefits may vary by location.
Our vibrant offices in Amsterdam and Lisbon are designed to inspire collaboration. Most Catawikians operate in a hybrid setup,
combining office-based and remote work, with a minimum of two days per week in the office, unless a role is explicitly stated as
fully remote or fully office-based.
Apply with an English CV and Cover Letter. By applying, you agree to Catawiki’s Applicant Privacy Policy. If you’re excited about
this role but don’t meet every requirement, we still encourage you to apply anyway. You may be just the right candidate for this
or other roles.
DEPT® is a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, our 4,000+ specialists deliver growth invention services across Brand & Media, Experience, Commerce, CRM, and Technology & Data. We’re 50|50 tech and marketing, partner-led, and first to move. Clients include Google, Lufthansa, Meta, eBay, and OpenAI. We have been certified B Corp and Climate Neutral since 2021. JOB PURPOSE The Media Account Director is the strategic engine of our client relationships. You don't just manage accounts; you act as a vital business partner, translating commercial objectives into high-impact media strategies. Leading a high-performing, multi-channel team, you will deliver innovative, data-driven, full-funnel strategies that drive client success while ensuring agency growth and sustained profitability. WHAT YOU'LL DO * Serve as the senior point of contact, navigating complex stakeholder environments and fostering enduring, high-level partnerships. * Act as the ultimate point of resolution for critical account issues, providing decisive leadership and conflict mediation to turn challenges into opportunities for trust-building. * Identify and convert organic growth opportunities within your portfolio and lead high-stakes pitches for new business. * Take full ownership of the financial health of your portfolio. This includes the estimation, creation, and rigorous review of budgets and pricing models for new services, ensuring all proposals are both competitive for the client and profitable for the agency. * Manage a portfolio of key accounts with precision, overseeing forecasting, budgeting, and strategic resource allocation. * Mentor and develop a team of Account Managers, fostering a culture of curiosity and excellence. You will empower your client's team to be proactive and build strong partnerships with clients counterparts. * Collaborate with Analytics teams to interpret performance data, delivering actionable business insights rather than just "reporting the numbers." WHAT YOU BRING * Extensive experience in sales or account management, including 4+ years within a media agency environment. Proven leadership experience is a significant plus. * Experience in building complex agency proposals for media clients. You must be proficient in scoping new services, calculating resource-based pricing, and maintaining healthy margins. * Bachelor’s degree in Marketing, Communications, Business, or a related field. * Deep experience managing media clients (Retail Media, Amazon, and Marketplaces preferred). * A portfolio demonstrating successful management of accounts exceeding $5M+ in annual media spend, spanning full-funnel strategy and activation. * Expert use of Salesforce and PowerBI. Familiarity with Google Marketing Platform, Meta Business Suite, Amazon Advertising, Pacvue, or Amalytix is highly advantageous. * High emotional intelligence, expert-level negotiation skills, and the ability to translate complex technical jargon for C-suite stakeholders. * A proactive, "hands-on" personality with a flexible, solution-oriented mindset. * Business fluency in both English and German is required. WE OFFER * Flexible hybrid working policy (1-2 days at the office, depending on location); * Company pension scheme; * Lease bike options / JobRad and 25% subsidy for the Deutschlandticket; * Occasional breakfast/lunch at the office, Smoothie Tuesdays; * €30 per month - You can use the flexible package for digital food stamps and/or fitness providers/sport clubs/massage studios, internet costs, and/ or public transport; * Future Bens - Exclusive access to sustainable, healthy products at attractive deals; * Stay happy and healthy with a contribution to your health through the OpenUp platform; * Social events, plenty of opportunities to connect with colleagues through organised activities and celebrations; * A reputation for doing good. DEPT® has been a Certified B Corp® since 2021 and named ‘Agency of the Year’ at both The Lovies and The Webby Awards; * Awesome clients. Whether big or small, local or global — at DEPT® you’ll get the opportunity to work with clients of all sizes and across all industries. And we celebrate all of our successes together! * The opportunity for possibility. We want to enable you to do what you do best and help you develop your skills further with training, development and certifications. WHY DEPT®? We are a Growth Invention company built to help the world’s most ambitious brands grow faster. Operating at the intersection of technology and marketing, we create what is next by pioneering ideas, acting fast, and moving further because standing still just is not in our DNA. We are drawn to people who stay curious, move with intent, and never stop inventing. Our culture runs on three values: better together, relentlessly curious, and get sh*t done. It is how we work, how we grow, and how we make things that matter. At DEPT®, you will find the freedom to explore, the space to collaborate, and the trust to make a real impact for our clients, for each other, and for the world we are helping to build. DIVERSITY, EQUITY & INCLUSION At DEPT®, we take pride in creating an inclusive workplace where everyone has an equal opportunity to thrive. We actively seek to recruit, develop, nurture, and retain talented individuals from diverse backgrounds, with varying skills and perspectives. Not sure you meet all qualifications? Apply, and let us decide! Research shows that women and members of underrepresented groups tend not to apply for jobs when they think they may not meet every requirement, when in fact they do. We believe in giving everyone a fair chance to shine. We also encourage you to reach out to us and discuss any reasonable adjustments we can make to support you throughout the recruitment process and your time with us. Want to know more about our dedication to diversity, equity, and inclusion? Check out our efforts here.
ABOUT THE PROJECT (DESCRIPTION, DURATION, STAGE) Hands-on AI-for-Security engagement with a regulated iGaming / online-gaming group. The client's security team is genuinely advanced: they already run an AI-driven offensive-security capability — continuous external-perimeter scanning feeding an LLM agent that plans exploitation, sources and validates exploits, and executes them in sandboxed environments — plus a runtime anomaly-detection layer watching for intrusion and privilege-escalation patterns across their products. They built this themselves and have explicitly asked us to challenge and improve it, not just rubber-stamp it. This is not a generalist AI project. Neurons Lab brings the AI-architecture and engagement depth; what's missing is the offensive-security domain lead who can sit across the table from a hands-on CISO team as a peer, pressure-test their pipeline, and own the methodology. You are that expert. The early work is concrete and consultative: understand what they've built, find where it's wrong or expensive, and propose a better way. Stage: pre-engagement / discovery (the immediate next step is a joint technical session with the client's CISO / security engineers). Duration: discovery → advisory / PoC, with strong extension probability as the security program scales across the group. Reporting: Neurons Lab CTO / engagement lead (@Alex Honchar); partners with the Neurons Lab AI Architect on the account. You are the security domain owner for this track. WHAT YOU'LL ACTUALLY DO (EXAMPLE TASKS) * Join joint working sessions with the client's hands-on security engineers; challenge and harden their AI-driven offensive pipeline end-to-end (recon → verification → AI-planned exploitation → sandboxed execution). * Design and refine the exploitation agent: how the LLM plans attack paths, selects and validates exploits, and orchestrates parallel sandboxes safely and reproducibly. * Optimise cost-per-finding of the existing exploitation pipeline: benchmark local / sovereign open models (Kimi, GPT-OSS, MiniMax, DeepSeek) against frontier models for the recon, exploitation and analysis loops; quantify accuracy / latency / cost trade-offs and recommend hardware sizing. * Shape the runtime anomaly-detection layer: define which intrusion / privilege-escalation precursor patterns are worth collecting (signal over raw-log volume), and design the missing pieces — automated response (kill a malicious process / disable an account on detection) and triage routing by criticality. * Stand up a quick-win PoC to anchor the engagement — e.g. an automated dependency / PR vulnerability-scanning pass, or a head-to-head local-vs-frontier benchmark of the exploitation agent. * Turn findings into a defensible technical proposal and roadmap; present methodology and trade-offs to a technical CISO / CTO audience. * Keep all sensitive work build-time and in-perimeter — no pushing intellectual property, configs, or recon-enabling data to external model providers; respect regulated-gaming certification constraints (no uncertified AI in runtime-critical paths). SKILLS (HANDS-ON FIRST) * Hands-on offensive security: vulnerability research, exploit development and chaining, web + network penetration testing; fluent with Nmap, Nuclei, Katana, Acunetix, Metasploit, Burp Suite and Kali tooling. * Building and operating LLM agents for security work — agentic tool-use, sandbox orchestration, prompt / flow design for recon and exploitation, guardrails for autonomous exploitation. * Local / self-hosted open models: running and tuning open weights (Kimi, GPT-OSS, MiniMax, DeepSeek) on rented or private GPU; quantization, throughput and the agentic-performance trade-offs that matter for security automation. * Exploit & threat intelligence: sourcing and validating exploits (including from underground / forum sources), CVE triage, exploitability and severity assessment. * Runtime detection: designing intrusion / privilege-escalation pattern detection, anomaly detection, and automated response. * Cloud security (AWS preferred): sandboxing, container isolation, secure inference hosting. * Writes their own code (Python + shell) and can explain methodology to non-security executives. KNOWLEDGE * Modern offensive-security methodology and the current exploit / zero-day landscape. * Strengths and limits of frontier vs. local LLMs for security automation (agentic tool-use, reasoning depth, cost-per-task). * Data-egress / sovereignty constraints: why IP and recon-enabling data must stay in-perimeter; private-cloud (AWS Bedrock) vs. rented-hardware trade-offs. * iGaming / regulated-infrastructure context and certification constraints (build-time vs. run-time AI) — strong plus. * Defensive side — SIEM, anomaly detection, incident response — plus. EXPERIENCE Key characteristics (ideally 4/4): * Hands-on offensive security * Built or operated AI / LLM-driven security automation (agents, pipelines), not just used a chatbot * Cloud hyperscaler experience (AWS preferred) * Technology consulting / client-facing delivery — can lead a CISO-level technical conversation Role-specific characteristics: * 3+ years hands-on offensive security / vulnerability research / red-team * Demonstrable exploit development and chaining; comfortable with zero-day research and exploit intelligence * Has wired LLMs into real security workflows (recon, exploitation, triage) * Has run self-hosted / local open models in a real engagement, with a view on cost and hardware * Comfortable being the sole domain expert in the room and owning the methodology TERMS & CONDITIONS * Allocation: ~0.25 – 0.5 FTE initially (discovery/advisory + joint CISO sessions), scaling with the engagement
JOB VACANCY THE ROLE Due to internal progression, we are looking to recruit within the established and busy New Build Property team of 5. In this role you will work in a fast-paced conveyancing department which specialises in New Build transactions. Your role will be to support the fee earners with their cases. You will be speaking with clients and referrers daily whilst progressing files. This is a great opportunity for someone with conveyancing experience to specialise and become an expert within this role. KEY RESPONSIBILITIES * Preparing the memorandum of exchange and all post exchange correspondence * Completion of all Stamp Duty Land Tax returns * Submitting the land registry priority searches and bankruptcy searches via the land registry portal * Preparing Certificates of Title for submission to lenders * Preparing invoices and completion statements * Preparing in advance of completion all paperwork and correspondence * On completion days dealing with telephone calls, notifying all parties of progress and completion and submitting the stamp duty land tax returns * Updating the LMS and Lender Exchange portals with all post completion tasks up to the point of registration * Submission of applications to change the Register (AP1) and First Registrations (FR1) of properties * Dealing with requisitions raised by the land registry with the support of the relevant fee earner * Maintain the team spreadsheet, where necessary, with the tasks relevant to your role in the transactions * Reviewing of files to ensure Stamp Duty and Registrations were submitted within the required timeframes * Monitoring of file on which a retention or other monies are held and following up when required for release of those funds * Attending to file closing * Providing overall support to fee earners in the team in order for the team to run and operate smoothly. WHAT SKILLS & EXPERIENCE DO I NEED? * Conveyancing experience obtained in a similar role. * Good knowledge of residential property processes and procedures and confidence in managing transactions. * Secretarial and audio dictation experience. * Efficient and well organised, with attention to detail. * Well-developed communication and interpersonal skills. * Adaptable and flexible with ability to work on own initiative as well as part of a team. * Ability to prioritise a case workload within tight time constraints under pressure. WHAT ATTRIBUTES DOES THIS ROLE REQUIRE? * Meticulous organisation * Sense of urgency, timely and reliable * Client focussed * Self-managing * A strong communicator both verbally and written WHAT WE OFFER At Holmes & Hills, we pride ourselves on our collaborative, respectful and authentic culture. We are a modern and progressive law firm committed to delivering exceptional client service while supporting the wellbeing and professional development of our people. * Competitive salary * Supportive, relaxed and flexible working environment * 28 days’ annual leave plus bank holidays * Medicash cashback scheme after one year of service * Life insurance * Employee Assistance Programme (EAP) * Physical and mental wellbeing support, including 24/7 virtual GP access * Enhanced maternity and paternity pay * Family-friendly policies and family events leave * Company sick pay * Cycle to Work scheme