Role Description We are looking for an AI Engineer to join a product engineering team focused on introducing LLM-based capabilities into enterprise software and building systems such as MCP servers and agents. The role involves working on AI-driven product features, backend services, and integrations that connect models with tools and data in a scalable production environment. Location: Serbia (relocation support available), Croatia, Poland, Portugal Tasks - Design and develop AI-powered product features with a focus on LLM-based capabilities; - Build and maintain MCP servers and agent-based components; - Develop enterprise-grade web services and backend integrations; - Work with tools, data sources, and model interfaces across cloud environments; - Collaborate with engineering teams to deliver production-ready AI solutions. Qualifications - AI Engineer profile with strong SDE background; - Proficiency in C# or Python; - Knowledge of Model Context Protocol (MCP) for connecting tools and data into models; - Experience in developing enterprise-grade web services; - Experience working with cloud platforms such as Azure, AWS, or GCP. Requirements - Hands-on experience with LLM and RAG engineering, including retrieval design, chunking, vector stores, and structured outputs, using tools such as OpenAI, LangChain, or LlamaIndex; - Experience in building and orchestrating agentic systems that call tools and reason over retrieved context, using frameworks such as LangGraph or AutoGen, and OpenAI tool calling or the Responses API; - Familiarity with LLM evaluation and observability tools such as LangSmith or Langfuse; - Experience with guardrails and security measures such as prompt injection defense and output validation. Engagement Type - B2B contract. Location / Timezone - Remote work from Croatia, Poland, Portugal, and Serbia. - European working hours. - Occasionally available for meetings up to 10:00 AM PST (US overlap).

Role Description We're looking for Senior HTML/CSS Developers to join our Expert Network to help train and evaluate cutting-edge AI models. If you have a background in Software Engineering or Frontend Development, we'll send you a quick 10- to 15-minute test to assess your skills. If successful, you'll be invited to join Prolific as a participant, where you'll get paid to help AI understand and produce high-quality frontend code and design implementation. - Researchers looking for your skills tend to pay up to $40/hr, depending on skills and experience. - You must be prepared to complete paid tasks that require one hour of uninterrupted work, though many are shorter. Qualifications - Educational Background: a BSc or higher in Computer Science, Software Engineering, Web Development, or a closely related technical field. - Professional Experience: real-world experience as a Senior Frontend Developer or UI Engineer specialising in HTML/CSS. - Coding Proficiency: ability to independently build complex, responsive layouts and components without relying on frameworks or libraries. - Deep Domain Knowledge: expert understanding of the CSS cascade, specificity, the box model, Flexbox, CSS Grid, accessibility standards (WCAG), and cross-browser compatibility. - Code Quality: a high standard for clean, semantic markup and maintainable CSS, including adherence to BEM methodology, design tokens, and modern CSS standards. Requirements - Evaluate Code Accuracy: review AI-generated HTML/CSS for functional correctness, semantic structure, and adherence to best practices. - Validate Logic & Reasoning: audit the step-by-step explanations provided by AI for layout solutions and styling approaches to ensure they are technically sound. - Conduct Execution Testing: render model-generated markup and stylesheets in appropriate environments to verify visual output and cross-browser behaviour. - Annotate Model Performance: identify areas where a model produces inaccessible markup, inefficient selectors, deprecated attributes, or hallucinated CSS properties. - Refine Technical Logic: provide structured feedback on how models reason through responsive design, component architecture, or design system implementation. Key Technologies - Core Languages: expert mastery of HTML5 and CSS3/4, including custom properties, animations, and modern layout systems. - Frameworks & Methodologies: extensive experience with Tailwind CSS, SASS/SCSS, or CSS Modules, and familiarity with component-driven design systems. - Testing & Tools: proficiency with browser DevTools, accessibility auditing tools (e.g., axe, Lighthouse), and cross-browser testing platforms. Benefits - Competitive pay rates. - Flexible hours. - The ability to work from home.

• Collaborate with senior developers and other team members to design and implement software solutions. • Write clean, maintainable, and efficient code following industry best practices. • Participate in code reviews and testing to ensure high-quality deliverables. • Assist in debugging and troubleshooting application issues. • Contribute to the development and maintenance of technical documentation. • Stay updated on emerging technologies and trends to improve your skills continuously.

Role Description We are looking for a detail-oriented and analytical Software Engineer to join our Integration Engineering team. In this role, you will be responsible for ensuring the design and development of a cloud native API first platform for our patented data and AI-powered Security Knowledge Platform™. - Expertise in scalable API first architecture, service patterns, and robust API standards for third-party integrations - Expertise in the transition to Cloud native architecture - Expertise in AI tools adaptation and strategic outcome oriented responsibility - Driving modernization efforts toward a highly reliable, service-oriented platform - Building and maintaining integrations connecting our platform with customer systems, security tools, workflow engines, and more - Helping evolve our platform into a robust, service-oriented architecture with high reliability - Creating consistent service patterns and ensuring strong guarantees around interfaces and performance - Improving internal engineering tools that support security triage and vulnerability workflows - Collaborating with designers using our accessible and standards-compliant design system (bugcrowd.design) - Ensuring high accessibility, stability, and performance across integration workflows - Deep knowledge of Kafka or similar event streaming platforms - Mentoring engineers across multiple teams and contributing to engineering excellence Qualifications - 2+ years of experience - Bachelor’s or Master’s degree in Computer Science, Engineering, or related field - Experience in Cyber security domain - Strong technical skills - Deep understanding of AI tools and scalability, security, and reliability - Expertise in cloud-native API and microservices architecture - Experience with enterprise UI frameworks - Strong background in agile delivery, backlog management, and stakeholder communication - Excellent problem-solving, prioritization, and decision-making skills Requirements - The ideal candidate must be able to complete all physical requirements of the job with or without reasonable accommodation - Sitting and/or standing - Must be able to remain in a stationary position 50% of the time - Carrying and/or lifting - Must be able to carry/move laptop as needed throughout the work day - Work Environment - Primarily remote, with occasional in-person presence as needed ADA Statement Bugcrowd is committed to the full inclusion of all qualified individuals. In keeping with our commitment, Bugcrowd will take the steps to assure that people with disabilities are provided reasonable accommodations. Accordingly, if reasonable accommodation is required to fully participate in the job application or interview process, to perform the essential functions of the position, and/or to receive all other benefits and privileges of employment, please contact HR at ada@bugcrowd.com. Culture At Bugcrowd, we understand that diversity in the workplace is vital to a company’s success and growth. We strive to make sure that people are included and have a sense of being part of making Bugcrowd not only a great product but a great place to work. - Our team consists of a broad range of people: musicians, adventure sports junkies, nature lovers, parents, cereal enthusiasts, night owls, cyclists, artists—you get the point - We value the perspectives and experiences people from underrepresented backgrounds bring Disclaimer This position has access to highly confidential, sensitive information relating to the technologies of Bugcrowd. It is essential that the applicant possess the requisite integrity to maintain the information in the strictest confidence. Equal Employment Opportunity Bugcrowd is EOE, Disability/Age Employer. Individuals seeking employment at Bugcrowd are considered without regards to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, or sexual orientation. Apply at: https://www.bugcrowd.com/about/careers/