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Theoremus

Project Coordinator & Client Support Specialist

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    ⚠️ IMPORTANT: We’re looking for someone who truly understands what this role requires. Applications that do not follow the requirements listed in the “How to Apply” section or don’t demonstrate understanding of the role will not be reviewed.

    Who We Are
    We are a Sofia based company and care about the city we live in. We have a common vision that we want to share and live in cleaner, healthier, happier and better cities overall, and we know that to live this dream today means we have to combine skills, reason and passion in a bold, new way. We’ve gained expertise and are currently focused on two main areas:

    • Mobility аnalytics & ticketing – We pride ourselves in developing Sofia’s public transportation ticketing system, and especially its online components, such as the QR tickets and the debit card payments. Furthermore, on top of that, we have developed its advanced analytics sub-system, which measures the behavioural patterns of public transit passengers, and aims to optimise for a frictionless experience. Our goal is to continuously enhance user experience and encourage people to limit the use of private vehicles, and thus improve urban mobility, traffic and air quality in the cities where your friends and family live.
    • Smart waste management – Our know-how in the waste management sector has been disseminated into multiple projects throughout Bulgaria and Spain. We have developed big IoT systems consisting of thousands of sensors attached to trucks and containers. The aim of these systems is to deploy data science methods in order to optimise the circular economy lifecycle and make waste taxation fairer.


    What we seek for:

    • 2-4 years experience in project coordination, PMO, or client support roles – you understand how projects work from kick-off to delivery, and you’re comfortable being the go-to person for both project updates and client questions.
    • Knowledge of Bulgarian Public Procurement Act – familiar with public sector requirements, procurement procedures, and compliance documentation.
    • Strong organizational and administrative skills – comfortable managing multiple project timelines, documentation, and deliverables simultaneously while keeping everything accessible and up-to-date.
    • Customer support experience – you’re comfortable handling client inquiries via email and phone, answering questions about projects, timelines, features, and technical issues professionally and promptly.
    • Excellent written and verbal communication – you write clear, professional emails that non-technical clients understand, and you know when to escalate issues.
    • Detail-oriented with a service mindset – you catch things before they slip through the cracks, and you genuinely care about making clients feel supported.
    • Proactive problem-solver – you don’t wait for things to break; you spot potential issues in project timelines or client requests early and coordinate solutions.
    • Comfortable with ambiguity – public sector projects and multi-client environments require flexibility and the ability to work things out as you go.

    That’s it. If you’re someone who gets satisfaction from keeping projects organized, clients supported, and information flowing smoothly, we want to meet you!

    What You’ll Learn:

    • Public sector project management – deep understanding of how smart city projects work from tender to delivery across multiple municipalities.
    • Bulgarian Public Procurement Act expertise – master the intricacies of public procurement, documentation requirements, and compliance procedures.
    • Multi-stakeholder coordination – learn to navigate complex relationships between teams, clients and government institutions.
    • Customer support excellence – develop skills in professional client communication, handling technical and administrative inquiries, and managing support workflows efficiently.
    • Smart city domain knowledge – become an expert in urban mobility and waste management project specifics across different cities and contexts.
    • End-to-end project lifecycle – from tender preparation through implementation to project closure.

    What You’ll Do:

    • Coordinate project operations – track timelines, milestones, and deliverables across multiple smart city projects, monitor dependencies, and flag risks before they become problems.
    • Manage project documentation – organize contracts, agreements, compliance documents, technical specifications, and delivery reports for various clients and ensure everything is accessible and up-to-date.
    • Handle client support inquiries – be the first point of contact for client questions via email and phone about project status, timelines, features, technical issues, billing, and contracts – responding professionally and promptly.
    • Support Bulgarian Public Procurement Act processes – assist with tender preparations, compliance documentation, and procurement procedures for public sector clients.
    • Maintain project visibility – create and update project status reports and stakeholder communications so everyone knows where things stand.
    • Coordinate administrative operations – manage contract tracking, and general administrative tasks across multiple projects and clients.
    • Keep communication flowing – ensure regular updates to clients, respond to their questions and concerns, and maintain professional relationships through consistent, clear communication.
    • Troubleshoot and escalate – when clients have technical questions or issues, gather information, coordinate with the team, and ensure the client gets a clear answer or resolution.


    What A Typical Day Looks Like:

    • You’ll start by checking client emails or taking calls – there might be a client asking about a timeline update, a support question about dashboard access, or a request for project documentation.
    • Morning typically includes responding to client inquiries, reviewing upcoming deadlines, etc.. You might need to troubleshoot why a client can’t access a feature, coordinate with the technical team to get an answer, and send a clear explanation back to the client.
    • Mid-day could involve preparing documentation for a tender submission, updating status reports for a client, coordinating with finance about invoicing, and responding to more client questions – someone needs their contract amended, another wants to know about upcoming maintenance, a third is asking about a feature they saw.
    • Afternoon might bring coordination work – syncing with project leads about next month’s deliverables, organizing files for an upcoming project kick-off, handling a few support requests, and making sure all your project documentation is current. You’ll wrap up by ensuring nothing urgent is waiting and tomorrow’s priorities are clear.

    No two days are exactly the same, but every day you’re keeping projects organized, documentation updated, and clients supported.

    How We’ll Set You Up For Success:

    • Structured onboarding – we’ll guide you through our projects, clients, systems, and processes over your first few weeks with hands-on training.
    • Clear processes and tools – we’ll introduce you to our documentation standards, support workflows, and communication protocols.
    • Support templates and guidelines – we’ll provide email templates and escalation procedures so you can handle client inquiries confidently.
    • Bulgarian Public Procurement Act guidance – if you’re still building public procurement expertise, we’ll provide support and review your work until you’re confident.
    • Client introductions – we’ll introduce you to key stakeholders across our client portfolio and help you understand each project’s context.

    Growth opportunities – as you master the role, you can take on more complex projects, lead specific PMO initiatives, or specialize in areas that interest you.

    What We Offer

    • Competitive salary with growth opportunities as you become indispensable and take on more strategic responsibilities.
    • Additional health insurance and Multisport card to keep you healthy.
    • Public transport card – because we believe in sustainable mobility (and we built the ticketing system, so it would be weird if we didn’t).
    • A team that values learning, organization, and having fun together – we work hard and we celebrate wins (with cake, obviously).
    • An amazing office in Sofia’s city center with a 360-degree panoramic view and a summer terrace for coffee, networking, and yes, more cake.
    • A mission that actually matters – your work will help improve city life for thousands of people across multiple cities through smarter mobility and waste management.

    What We Believe In
    We don’t just track projects – we make sure smart city solutions actually reach the people who need them, and that clients get the support they need along the way. Part of our values:

    • Ownership over processes – You get responsibility, not micromanagement.
    • Solutions over scripts – Think creatively, don’t just follow procedures.
    • Care over speed – Fix it right the first time rather than rushing to close tickets.
    • Collaboration over escalation – Try to solve it yourself first, but never hesitate to ask for help when needed.
    • Proactive over reactive – spot issues in timelines or client requests before they become problems.
    • Organized over chaotic – systematic approaches to documentation and coordination create sustainable success.
    • Responsive and reliable – every client question deserves a timely, professional answer.
    • People and sustainability first – projects should serve citizens and the environment.

    How to Apply?
    If this sounds like the kind of work that energizes you – where organizational skills meet genuine client care and meaningful impact – let’s talk!
    Send us:

    • Your CV
    • Examples of projects you’ve coordinated or clients you’ve supported successfully
    • A few sentences about what excites you most about this role

    Don’t meet every single requirement? Apply anyway if you’re excited about smart city projects and have a track record of keeping clients happy and projects organized. We care about potential, mindset, and how you approach problems – not just checking boxes on a requirements list.

    We’re looking for someone who gets satisfaction from keeping projects organized, clients supported, and information flowing smoothly across multiple workstreams.

    Is that you? Let’s meet!