Engineering Lead (Rust) at Keyrock | Brussels

About KeyrockSince our inception in 2017, Keyrock has emerged as a trailblazer in the digital asset sector, celebrated for our innovative partnerships and commitment to excellence.Today, we are a vibrant team of over 180 members spanning across the globe, representing 42 nationalities. Our diverse workforce includes everyone from DeFi experts to PhD holders.…

As a Freelance Test Automation Engineer at Resillion, you will have the opportunity to join a technically proficient team dedicated to developing and implementing cutting-edge test automation solutions.Your key responsibilities will include designing, developing, and maintaining automated test scripts, as well as testing software applications to ensure their quality and reliability.You will collaborate closely with our client’s development teams, testers, and project managers.Key Responsibilities:Analyze software requirements and specifications to define test cases and scenarios.Design, develop, and maintain automated test scripts using advanced test automation tools.Perform functional, regression, and performance testing.Report test results and identify issues and vulnerabilities.Work with development teams to integrate test automation into the development process.Contribute to the continuous improvement of test automation processes and practices.

As a QA Software Test Automation Engineer, you will play a pivotal role in enhancing the quality of various products. In our supportive and inclusive work environment, we are committed to helping you continuously expand your knowledge, improve your skills, and develop new competencies. Are you ready for a challenging career with job security, where you can make a significant impact? Test Preparation Assess the development of new features for the framework and scripts (extend the framework)Evaluate which test cases should be automated and determine the time required for automationContribute to identifying the most efficient testing strategiesUnderstand the maintainability strategyTest Execution Maintain and extend the framework through the development of new featuresProvide advice and support to developers for writing unit testsWrite and execute load and performance testsPrepare, review, run, and analyze scripts (correctly applying the testing pyramid)Propose improvements for the product being testedIntegrate with CI/CD ToolsInitiate CI, adjust pipeline scripts under guidanceBe eager to think about continuous improvementTest Reporting.Report on test improvement proposals for the product/service being testedFamiliarize and, if necessary, enhance the BI frameworkInterpret data from reporting toolsReport progress regarding the development of the Test Automation framework and content improvement to the responsible partiesGeneralYou will act as the liaison between the organization, the team, and external contacts and clients.Additionally, you will maintain existing client relationships and build new ones by networking and increasing the visibility of Resillion as a leading player in the software testing market.

About KeyrockSince our inception in 2017, Keyrock has emerged as a transformative force in the digital asset landscape, celebrated for our innovative partnerships and forward-thinking solutions.Today, we proudly count over 180 talented individuals from 42 different nationalities among our ranks. With a diverse range of experiences—from DeFi experts to PhD holders—our predominantly remote team operates from hubs in London, Brussels, Singapore, and Paris, fostering a collaborative environment through regular online and offline gatherings.We are active on more than 80 exchanges, partnering with a broad spectrum of asset issuers. As a recognized market maker, our unique expertise has catalyzed rapid expansion into various services, including market making, options trading, high-frequency trading, OTC, and DeFi trading desks.At Keyrock, we are more than just a service provider; we are innovators. We are pioneers in utilizing the Rust Development language for our algorithmic trading and advocate for its adoption across the industry. Through our Accelerator Program, we empower Web3 startups, enhance ecosystems by injecting liquidity into promising DeFi, RWA, and NFT protocols, and drive industry advancement through our research and governance initiatives.Join us at Keyrock, where we are not merely imagining the future of digital assets—we are actively constructing it.The RoleAs the Head of Security Engineering, you will lead the technical strategy and implementation of Keyrock’s security engineering initiatives—establishing secure-by-design cloud foundations, developer-friendly processes, and robust cryptographic/key-management controls essential for a high-availability trading environment.This position demands a hands-on leader with extensive knowledge of AWS and AWS Key Management Service (KMS), encompassing key policies, grants, cross-account patterns, and key rotation practices.Your ResponsibilitiesSecurity Engineering LeadershipLead and expand a high-performing security engineering team focused on cloud, platform, and application security, while establishing a clear roadmap, standards, and measurable outcomes.Create engineering patterns that harmonize speed and control (secure defaults, automation-first, self-service guardrails).AWS Cloud Security ArchitectureTake ownership of the cloud security architecture for AWS, developing landing zone patterns, multi-account strategies, network segmentation, identity and access design, logging/telemetry baselines, and infrastructure hardening.Implement preventive measures and controls...

As a Lead Electrical Engineer, you will oversee the electrical, instrumentation, and automation aspects of various projects during both the bidding and execution phases. Your responsibilities will encompass the basic and detailed design, procurement, installation supervision, and commissioning of projects.You will also be tasked with investigating the best solutions, selecting and managing suppliers and subcontractors, and collaborating with other disciplines for diverse projects of varying nature and scale in Flanders, located within approximately one hour from Antwerp.Responsibilities:During the Bidding Phase:Support the bid manager in preparing a technical and cost proposal that aligns with the client and/or consultant's requirements.Assist in technical negotiations with the client and/or consultant as well as with potential subcontractors for electrical and automation works.Lead technical and commercial negotiations with subcontractors/suppliers for electricity, instrumentation, and automation.During the Execution Phase:Support the project manager in determining the best (qualitative, commercial, and technical) solutions for electricity, instrumentation, and automation, in accordance with specifications.Negotiate with clients, consultants, and subcontractors/suppliers.Carry out and monitor basic and detailed engineering with subcontractors/suppliers.Assist the site manager or project manager during delivery, installation, commissioning, and startup.

Exciting Opportunity: BI Data Engineer (Data Lakes / Data Lakehouses)Trasys International is a vibrant global enterprise committed to supporting EU Institutions through innovative solutions. With over 30 years of experience, we pride ourselves on our ability to deliver top-tier services that empower our clients in their digital transformation journeys. Our mission is to match exceptional talent to the right opportunities, ensuring that we meet the evolving challenges of the tech landscape. We are constantly seeking skilled professionals ready to engage in impactful international projects and thrive in diverse environments. Our portfolio encompasses a range of services, including modernization of IT solutions, cloud technologies, digital workspaces, and IT security, with our headquarters located in Brussels and offices across Europe including Luxembourg, Amsterdam, Athens, Stockholm, and Geneva.Are You the One?We are currently on the lookout for a proactive BI Data Engineer to join our team for one of our primary clients located in Brussels, a European Institution. This role will involve the design of cutting-edge Business Intelligence (BI) architectures, emphasizing data lakes and data lakehouses. Key responsibilities include:Crafting BI architectures tailored for various environments with a strong emphasis on security and compliance.Evaluating business requirements for data pipelines and reporting solutions.Executing ETL/ELT processes and establishing data virtualization layers.Building data models, reporting applications, and refining database schemas.Performing database performance evaluations, instituting data quality frameworks, and defining testing protocols.Generating technical documentation and overseeing BI systems.Ensuring data security, optimizing BI platforms, and facilitating self-service BI capabilities.Required Expertise and Technologies:Design of enterprise data warehousesData lake and lakehouse design methodologiesProficiency in relational and non-relational databasesExpertise in SQLFamiliarity with BI reporting and analytics toolsExperience with ETL and ELT toolsKnowledge of data flow modeling toolsUnderstanding of OLAP technologies and data mining toolsExperience with near real-time data ingestion and Change Data Capture (CDC) technologiesCloud-based BI architecturesData governance and observability practices

Exciting Opportunity: Senior BI Data Engineer (Specializing in Data Lakes and Lakehouses)Trasys International is an innovative global organization dedicated to being a trusted partner for EU Institutions. With a robust commitment to excellence and a distinguished track record of 30 years in delivering top-notch solutions, we are passionate about fostering the growth and success of our clients. Our mission is to empower clients in navigating the complexities of digital transformation by supplying the right talent for the right tasks at the right moments. We are continually on the lookout for skilled professionals eager to engage in challenging international projects and produce high-quality outcomes within diverse multicultural settings. Our offerings span modernization of solutions, digital workspaces, cloud technologies, and IT security. Headquartered in Brussels, we maintain active operations across Europe, including Luxembourg, Amsterdam, Athens, Stockholm, and Geneva.Are You the Right Fit?We are currently seeking a proactive BI Data Engineer for one of our major clients located in Brussels, a prominent European Institution.The selected candidate will be responsible for designing state-of-the-art Business Intelligence (BI) architectures, with a strong emphasis on data lakes and data lakehouses. Key responsibilities include:Crafting BI architectures tailored for various environments, prioritizing security and compliance.Assessing business requirements to develop effective data pipelines and reporting solutions.Implementing ETL/ELT processes alongside data virtualization layers.Creating data models, reporting applications, and optimizing database schemas.Conducting performance analyses on databases, establishing data quality frameworks, and defining test programs.Generating technical documentation and managing BI systems.Ensuring data security, enhancing BI platforms, and enabling self-service BI functionalities.Required Expertise and Technologies:Designing enterprise data warehouses.Understanding data lake and lakehouse design patterns.Proficiency in relational and non-relational databases.Expertise in SQL.Familiarity with BI reporting and analytics tools.Experience with ETL and ELT tools.Knowledge of modeling tools for data flows.Understanding OLAP technologies and data mining tools.Experience with near real-time data ingestion and CDC technologies.Knowledge of cloud BI architectures.Familiarity with data governance and observability practices.

Senior Customer Engineer, Deasy LabsJoin our innovative team at Deasy Labs as a Senior Customer Engineer, where you will engage directly with clients to architect and showcase solutions leveraging the Deasy Labs platform. Collaborating closely with sales, product, and engineering teams, you will empower organizations to transform unstructured data into AI-ready knowledge.In this pivotal role, you will spearhead technical discovery sessions, present engaging product demonstrations and proof-of-concepts, and guide clients in utilizing Deasy Labs to tackle intricate data and AI challenges.This position operates under a hybrid work model, requiring a minimum of two days in our Brussels office each week. This approach fosters collaboration and allows our team to build strong connections while driving progress together.

Join BESIX Group as a Project Manager in Brussels, where you will play a pivotal role in leading and executing civil engineering and building projects. As a key member of our dynamic team, you will oversee project timelines, budgets, and ensure compliance with quality standards. This is an exciting opportunity for professionals passionate about construction and project management.

Join Soprasteria as a Life Sciences MES Engineer, where you will play a pivotal role in advancing our clients' manufacturing processes through cutting-edge Manufacturing Execution System (MES) implementations. We are seeking a highly skilled professional with a passion for life sciences and technology. You will collaborate with cross-functional teams to ensure seamless integration of MES solutions that enhance productivity and compliance.As a Life Sciences MES Engineer, you will work on exciting projects that leverage your expertise in software development and system integration within the life sciences sector. You will be responsible for analyzing client needs, designing effective MES solutions, and providing ongoing support and optimization to ensure system performance.

About the Role Speechify is looking for a Software Engineer focused on the iOS Core Product in Brussels, Belgium. This position centers on building and refining the core application that serves as the foundation for Speechify’s user experience. What You Will Do Develop new features and improve existing ones within the iOS core product. Collaborate with a skilled team to deliver a smooth, reliable app experience. Work on performance optimization and ensure the app runs efficiently.

Join Coreso on a thrilling journey as we lead the charge in the European energy sector!Your Future at Coreso Located in the vibrant European district of Brussels, Coreso is an innovative small-to-medium enterprise (SME) seeking a dedicated Power Systems Engineer who is passionate about grid operations, energy security, and international collaboration.In this pivotal role, you will be instrumental in enhancing and securing electricity exchanges across Europe. Utilizing cutting-edge grid security analysis, capacity calculations, and collaboration with Transmission System Operators (TSOs), you'll ensure the stability and reliability of the interconnected European power network.Projected Start Date: April - June 2026Your Mission Awaits!As a Power Systems Engineer, your responsibilities will include both shift-based grid operations and project-based office work to uphold the stability of Europe's energy grid.Key Shift Responsibilities:Conduct cross-border capacity calculations – Evaluate and allocate energy exchange capacities between European nations.Oversee grid security – Assess network conditions to identify and address potential risks, such as overloads and instabilities.Execute emergency measures – Collaborate closely with TSOs to implement coordinated remedial actions.

cabonorte is on the lookout for a dedicated Plant & Equipment Operations Engineer to join our seasoned operational team. This role is pivotal in managing and supporting a diverse fleet of construction equipment across various projects in Belgium.The position entails a regular presence on job sites, coupled with coordination efforts from a central operational base. You will engage in projects located between Brussels and Limburg, with additional responsibilities based in the Brussels region (Sint-Pieters-Leeuw). The primary objective of this role is to ensure the safe, efficient, and reliable operation of equipment across all assigned projects.

Join the Unstructured AI Team at Collibra At Collibra, we are revolutionizing how some of the world’s leading organizations handle data. Our mission is to empower Data Citizens by connecting them with the right data and insights. To achieve this vision, we are assembling a talented team of individuals who are passionate about delivering exceptional results. As a Forward Deployed Engineer, you will be pivotal in bringing Collibra's innovative products and vision to life for our customers and prospects. You will establish trusted relationships from the outset and act as a knowledgeable technical advisor. This role is hybrid, requiring at least two days a week in our Brussels office. This collaborative environment enhances our ability to connect, work closely, and make continuous progress as a cohesive team.

Collibra is looking for an Associate Product Content Engineer I to join the Product Management team in Brussels. This hybrid role requires at least two days each week onsite, encouraging close collaboration and steady progress with colleagues. What you will do Create use-case-driven content: Develop solutions such as Data Products and address regulatory topics like the EU AI Act, GDPR, and BCBS 239. Transform complex technical features into clear, accessible content that delivers value. Enhance onboarding and adoption: Configure and tailor the Collibra platform to improve the initial user experience, helping customers achieve results more quickly. Experiment with new technologies: Test AI and other emerging tools through rapid prototyping, learning from both successes and failures. Support the Collibra community: Serve as a platform expert in forums, assisting customers with scalable customizations and quality setups. Contribute to the platform roadmap: Collaborate with Product Management to help shape the future direction of Collibra’s Data Intelligence platform. Work location This position is based in Brussels, Belgium. The hybrid schedule includes at least two days per week in the office to support teamwork and connection.

Are you passionate about artificial intelligence and looking to make an impact? As an AI Engineer at Sopra Steria, you will be at the forefront of technological innovation, working on exciting projects that leverage AI to transform businesses. Join our dynamic team in Brussels and help us deliver cutting-edge solutions that drive efficiency and effectiveness.

Role overview Sword Technologies is seeking a Data Engineer to join its Brussels team. The position centers on building, optimizing, and maintaining data pipelines and Lakehouse structures within the Microsoft Fabric ecosystem. Reporting to the solution architect, the Data Engineer collaborates with technical teams to translate architectural plans into scalable, efficient data delivery systems. Main responsibilities Delta Lake implementation: Develop and refine physical storage layers (Bronze, Silver, Gold) using Delta Lake formats. Apply effective partitioning and Z-Ordering to improve performance and organization. Pipeline execution: Design and implement ETL/ELT workflows with Fabric Data Factory, Spark, and custom code to move data from multiple sources into OneLake. Custom application development: Build and maintain high-performance data processing modules or custom connectors using Java and/or Python. Cross-platform integration: Create data bridges between Microsoft Fabric and external platforms such as AWS, GCP, or on-premises systems, using Shortcuts and APIs. Code-based transformations: Write complex logic in Spark Notebooks for detailed data cleansing and business logic. System testing: Conduct unit testing, data profiling, and performance benchmarking to ensure the stability and integrity of data pipelines. Location This role is based in Brussels, Belgium.

Jobgether is looking for a Senior Software Engineer to help build AI-based SaaS solutions. This position is based in Belgium and focuses on designing, developing, and implementing software that improves user experience and supports business goals. Role overview This role centers on creating software products that use artificial intelligence within a SaaS context. Collaboration with cross-functional teams is a key part of the work, ensuring that project requirements are clear and that the final products align with business needs. What you will do Design and develop software solutions for AI-driven SaaS products Implement new features and enhancements to improve user experience Work closely with colleagues from different departments to define and refine project requirements Deliver high-quality software that meets project and business objectives Requirements Experience in software engineering, with a focus on AI or SaaS solutions Ability to collaborate effectively with cross-functional teams Strong skills in designing and implementing software systems

Join BESIX, a leading construction company, as a Technical Office Engineer / Site Superintendent Intern in the vibrant city of Brussels. This internship offers a unique opportunity to gain hands-on experience in managing site operations and technical documentation for construction projects. You will work closely with experienced professionals, contributing to the successful execution of various projects while enhancing your technical skills and industry knowledge.

Join everience as a Data Engineer (m/w/d) with a specialized focus on data migration. In this role, you will be instrumental in designing, developing, and implementing data migration solutions that ensure seamless transitions of data across various platforms. You will collaborate with cross-functional teams to identify and resolve data-related challenges, ensuring data integrity and accuracy throughout the migration process.