
Harmattan AI · Paris
ABOUT US Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M Series B, valuing the...
Harmattan AI is a next-generation defense prime building autonomous and scalable defense systems. Following the close of a $200M
Series B, valuing the company at $1.4 billion, we are expanding our teams and capabilities to deliver mission-critical systems to
allied forces.
Our work is guided by clear values: building technologies with real-world impact, pursuing excellence in everything we do, setting
ambitious goals, and taking on the hardest technical challenges. We operate in a demanding environment where rigor, ownership, and
execution are expected.
As Harmattan AI expands its product portfolio, the 3D Designer will play a key part in shaping how new products are revealed to
the market. Using 3D visuals, motion, and storytelling, this role makes complex defense technologies immediately clear,
compelling, and credible — from first reveal to sales enablement. Reporting to the Head of Marketing, within the Sales & Marketing
department, you will define how each product is visually positioned and understood across its lifecycle.
digital content.
in a B2G environment.
libraries.
visually introduced and demonstrated.
motion design and video editing.
technical industries.
especially for product-focused contexts.
or product launch campaigns. Education matters less than proven deliverables.
across Marketing, Product, and Sales teams.
members to senior executives.
operational excellence.
We look forward to hearing how you can help shape the future of autonomous defense systems at Harmattan AI.
ABOUT VOODOO Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz. TEAM Our Gaming team is made up of hybrid-casual, casual and mid-core experts. Our 'Core' games team supports internal and external studios worldwide in creating, developing and launching new hit games, whilst our 'Live' games team focuses on delivering higher engagement on our existing and successful games. This is an opportunity to bring your ideas to life, to create your games, in an enjoyable and benign working environment among gaming lovers. Your games will be published by the worldwide leader in this field. You will get the chance to join a newly created small studio, focusing on creating and testing new hyper casual game prototypes to be published by Voodoo. You will have autonomy, a strong impact on the ideation, and a unique opportunity to reach hundreds of millions of players. You will take an innovative approach to gameplay ideas/features and give them their own spin. ROLE With this role, you will be core to the company by contributing daily to important decisions with a multidisciplinary team of passionate and talented people. Flesh out the details of a game's design, oversee its testing, and revise the game in response to player feedback. Thanks to your creativity and your teamwork, let’s entertain millions of people with your hit games. Our studios are looking for people who bring their own ideas and are always willing to compromise to move forward. * Support the Lead Artist in the ideation and execution of the game’s vision. * Design and implement a high-quality, scalable UI from concept to final integration in Unity. * Create and maintain a comprehensive UI Style Bible and reusable component libraries. * Create high-quality 3D assets (characters, assets, props and environment art) and ensure optimal performance across mobile devices. * Setup, integrate, and animate UI scenes in Unity. * Work with Game Designers to ensure UI supports gameplay and accessibility goals. * Improve and work on LiveOps * Iterate quickly based on team feedback and live user data. * Propose creative ideas to boost player engagement and improve the user experience. PROFILE * Strong Unity skills, with the ability to implement and optimise directly in engine. * Excellent 3D design skills, with a keen eye for visual hierarchy, composition, and readability. * Good UI experience * A keen eye for emerging mobile game trends with the ability to creatively deconstruct and learn from success cases. * Experience collaborating with cross-functional remote teams. * Fluent in English. BENEFITS • Best-in-class compensation • Other benefits according to the country you reside
ABOUT VOODOO Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz. This position is Paris-based, with relocation support available. TEAM For this position, you will be an integral part of a newly established internal studio, a dynamic and focused team dedicated to one of our most promising prototype in scale. This studio is specifically chartered to improve this high-potential game up to the successful and market-ready title it is meant to become. You will be part of the team building Castle Busters, a turn-based multiplayer game, working alongside its client engineers and game designers as a full member of the game team. You will be part of a small group owning the backend that this game needs as its requirements become more specific and demanding. You’ll also be plugged into Voodoo's shared gaming backend platform - the same architecture and patterns that power titles like Mob Control and Block Jam 3D - building on it and contributing back, in close collaboration with the wider backend team. You get the focus and ownership of a dedicated game engineer with the leverage and support of a battle-tested platform behind you. This is a pivotal hire: Castle Busters is moving towards competitive multiplayer, which means moving game logic from the client to the server. You will be central to that transition. ROLE You will design and build the server-side foundation that takes Castle Busters from a client-authoritative game to a competitive, server-validated one. The current game computes everything on the device - progression, economy, and match outcomes alike, which won't hold up for competitive PvP. Your job is to change that. Working closely with client developers and game designers from feature design through delivery, validation and iteration, you will: * Build server-side validation for the metagame - currency, card upgrades, chest opens, and progression - staged by risk, replicating economy and reward logic on the server. * Move toward server authority for competitive features, where game state lives in one place and can be trusted. * Design APIs and player-state management that the Unity client integrates against, and help shape how client and server split responsibilities. The responsibilities are cross-functional, ranging from infrastructure, API design & coding all the way to client-side integration (we are using Golang). To succeed in this role, you will need to have passion for everything you do. You love to write code that scales to millions of users, are skilled at requirements gathering, champion new tech initiatives & leverage existing solutions. PROFILE * 7+ years of backend development experience * Strong knowledge of computer science fundamentals * Extreme fluency in Golang (At least 1 year in a professional environment) * Mastery of SQL and NoSQL * Background in high-scale systems * Understanding of Unix-like environments * Experience working in cross-functional agile teams * Strong analytical skills with a track record of solving complex problems related to scalability, performance, and integration in high-stakes environments. * Excellent interpersonal and communication skills, capable of influencing teams and interfacing effectively with various stakeholders. * Ability to be self sufficient and work autonomously. * A deep interest in game development is a plus. BENEFITS * Best-in-class compensation * Other benefits according to the country you reside
ABOUT VOODOO Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Mob Control and Block Jam, alongside popular apps such as BeReal and Wizz. This position is Paris-based, with relocation support available. TEAM For this position, you will be an integral part of a newly established internal studio, a dynamic and focused team dedicated to one of our most promising prototype in scale. This studio is specifically chartered to improve this high-potential game up to the successful and market-ready title it is meant to become. You will be part of the team building Draft Showdown, a turn-based multiplayer game, working alongside its client engineers and game designers as a full member of the game team. You will be part of a small group owning the backend that this game needs as its requirements become more specific and demanding. You’ll also be plugged into Voodoo's shared gaming backend platform - the same architecture and patterns that power titles like Mob Control and Block Jam 3D - building on it and contributing back, in close collaboration with the wider backend team. You get the focus and ownership of a dedicated game engineer with the leverage and support of a battle-tested platform behind you. This is a pivotal hire: Draft Showdown is moving towards competitive multiplayer, which means moving game logic from the client to the server. They are also implementing cheat detection safeguards to the game. You will be central to that transition. ROLE You will design and build the server-side foundation that takes Draft Showdown from a client-authoritative game to a competitive, server-validated one. The current game computes everything on the device - progression, economy, and match outcomes alike, which won't hold up for competitive PvP. Your job is to change that. Working closely with client developers and game designers from feature design through delivery, validation and iteration, you will: * Build server-side validation for the metagame - currency, card upgrades, chest opens, and progression - staged by risk, replicating economy and reward logic on the server. * Move toward server authority for competitive features, where game state lives in one place and can be trusted. * Implement and improve matchmaking and cheat detection safeguards for a Deterministic lockstep PvP architecture * Design APIs and player-state management that the Unity client integrates against, and help shape how client and server split responsibilities. The responsibilities are cross-functional, ranging from infrastructure, API design & coding all the way to client-side integration (we are using Golang). To succeed in this role, you will need to have passion for everything you do. You love to write code that scales to millions of users, are skilled at requirements gathering, champion new tech initiatives & leverage existing solutions. PROFILE * 5+ years of backend development experience * Strong knowledge of computer science fundamentals * Extreme fluency in Golang (at least 1 year in a professional environment) * Mastery of SQL and NoSQL * Background in high-scale systems * Understanding of Unix-like environments * Experience working in cross-functional agile teams * Strong analytical skills with a track record of solving complex problems related to scalability, performance, and integration in high-stakes environments. * Excellent interpersonal and communication skills, capable of influencing teams and interfacing effectively with various stakeholders. * Ability to be self sufficient and work autonomously. * A deep interest in game development is a plus. * Based or willing to relocate in Paris BENEFITS * Best-in-class compensation * Other benefits according to the country you reside