This engagement is focused on building an internal AI platform that enables developers to ship AI-powered services efficiently. Scope includes model connectivity, prompt testing and evaluation, monitoring/observability, and the underlying AI infrastructure layer. The objective is to improve DevEx and reduce time-to-market for AI features. Location: Serbia (relocation support available), Croatia, Poland, Portugal Tasks - Build and operate the AI platform infrastructure enabling developers to ship LLM-based services faster. - Implement and maintain Kubernetes-based runtime environments (incl. AKS) for AI workloads. - Manage infrastructure as code with Terraform (modules, environments, CI/CD automation). - Support LLM workflows: RAG, agents, prompt experimentation, evaluations, and deployment patterns. - Integrate and operate tooling such as Azure AI Foundry, LiteLLM, Langfuse, MLflow. - Orchestrate pipelines using Kubeflow Pipelines and/or Argo Workflows (build, deploy, evaluate). - Improve platform reliability and observability (monitoring, logging, tracing, cost/perf signals). - Collaborate closely with developers to streamline DX (APIs, templates, docs, golden paths, automation). Requirements - Strong hands-on experience with Kubernetes in production (preferably AKS). - Solid Terraform expertise (IaC best practices, multi-env setups). - Practical experience supporting ML/LLM workloads in a platform or DevOps/MLOps context. - Proficiency in Python for automation, scripting, and supporting APIs/evaluation tooling. - Understanding of CI/CD, release processes, and production-grade operations. - Ability to work under tight timelines and deliver pragmatically. Nice to Have - Experience building internal developer platforms or “paved roads” for engineering teams. - Familiarity with LLM evaluation frameworks, prompt testing workflows, and LLM observability. - Exposure to RAG architectures, vector databases, and agentic patterns. - Experience with Kubeflow, Argo, and ML lifecycle tooling. Engagement Type - Long-term B2B contract. Team - You will join a team of 5, with 3 AI Platform Engineers being added. 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).

CEQUENS is a leading global communications platform as a service (CPaaS, SaaS, AI) provider that simplifies customer engagement for businesses through its innovative, reliable, and secure communication solutions. Established in 2011, CEQUENS offers a comprehensive suite of APIs, including SMS, WhatsApp for Business, Voice, Push Notifications, and more, enabling seamless and personalized interactions across multiple channels. Our partner network covers MEA region with international access to messaging hubs worldwide and our clients include major banks, credit cards, digital payments, OTT applications, government authorities, health and education, and other industry verticals. If you have the passion for success and are ready to constantly challenge yourself within a collaborative team-environment join our team. CEQUENS is seeking a motivated and passionate Junior Full Stack Engineer with expertise in Node.js to join our dynamic engineering team. This role is perfect for individuals looking to kickstart their career in software development while contributing to cutting-edge communication solutions that serve global clients. You will work closely with senior engineers, gaining hands-on experience and mentorship while developing various web applications and services. We are looking for a motivated and enthusiastic Junior Full Stack Engineer with a focus on Node.js to join our growing development team. You will assist in designing, developing, and maintaining scalable web applications. This is an excellent opportunity for someone who is passionate about learning and growing in full-stack development. Key Responsibilities • Develop and maintain backend services using Node.js, Express, and related technologies. • Assist in building and improving frontend components using React, Vue, or similar frameworks. • Collaborate with senior developers, designers, and product managers to understand requirements and translate them into technical solutions. • Write clean, maintainable, and well-documented code following best practices. • Participate in code reviews and contribute to the improvement of internal coding standards. • Help with debugging, testing, and performance optimization. • Work with databases (e.g., MongoDB, PostgreSQL) to design and manage data models. • Stay updated with emerging trends in web technologies and suggest improvements.

CEQUENS is a leading global communications platform as a service (CPaaS, SaaS, AI) provider that simplifies customer engagement for businesses through its innovative, reliable, and secure communication solutions. Established in 2011, CEQUENS offers a comprehensive suite of APIs, including SMS, WhatsApp for Business, Voice, Push Notifications, and more, enabling seamless and personalized interactions across multiple channels. Our partner network covers MEA region with international access to messaging hubs worldwide and our clients include major banks, credit cards, digital payments, OTT applications, government authorities, health and education, and other industry verticals. If you have the passion for success and are ready to constantly challenge yourself within a collaborative team-environment join our team. CEQUENS is seeking a motivated and passionate Junior Full Stack Engineer with expertise in Node.js to join our dynamic engineering team. This role is perfect for individuals looking to kickstart their career in software development while contributing to cutting-edge communication solutions that serve global clients. You will work closely with senior engineers, gaining hands-on experience and mentorship while developing various web applications and services. We are looking for a motivated and enthusiastic Junior Full Stack Engineer with a focus on Node.js to join our growing development team. You will assist in designing, developing, and maintaining scalable web applications. This is an excellent opportunity for someone who is passionate about learning and growing in full-stack development. Key Responsibilities • Develop and maintain backend services using Node.js, Express, and related technologies. • Assist in building and improving frontend components using React, Vue, or similar frameworks. • Collaborate with senior developers, designers, and product managers to understand requirements and translate them into technical solutions. • Write clean, maintainable, and well-documented code following best practices. • Participate in code reviews and contribute to the improvement of internal coding standards. • Help with debugging, testing, and performance optimization. • Work with databases (e.g., MongoDB, PostgreSQL) to design and manage data models. • Stay updated with emerging trends in web technologies and suggest improvements.

Title: Senior Full-Stack Engineer Location: US - United States of America Job Description: Yahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results. About Search Yahoo Search is one of the most highly scaled applications on the planet, serving millions of users daily. We hire world-class engineers to reimagine the future of search through high-performance infrastructure and innovative user experiences. Our team operates in a highly collaborative environment where technical excellence meets rapid experimentation. As we integrate next-generation AI technologies into our core platform, we are looking for leaders who can help us reinvent how the world finds information. About You As a Senior Full-Stack Software Engineer, you are a technical leader who thrives at the intersection of architectural design and high-velocity execution. You don't just write code; you design scalable systems and oversee the technical health of major squad-level solutions. You are an AI-forward engineer who proactively identifies ways to augment the development lifecycle—improving speed, quality, and security through automation and intelligent tooling. You are a mentor, a strategic partner to Product and Design, and a champion for engineering best practices in a distributed, cloud-ready environment. Responsibilities - Lead the design and architectural direction of complex, full-stack search features, with a focus on front-end work, moving from task execution to high-level system optimization. - Drive engineering velocity by integrating AI-assisted development tools (e.g., GitHub Copilot, Cursor) into the squad’s daily workflow to accelerate code generation and unit testing. - Perform AI-augmented code reviews, serving as the final validator for quality, performance, and security while leveraging LLMs to identify edge cases. - Design and develop scalable, maintainable, cloud-native backend services and APIs that power high-concurrency search interfaces. - Proactively identify and implement AI-driven efficiencies in day-to-day work, replacing repetitive manual tasks with automated or AI-assisted workflows. - Collaborate with UX Designers and Product Managers to translate ambitious product strategies into measurable technical results. - Exercise critical judgment in validating AI-generated outputs (code, documentation, or diagnostics) to ensure they meet Yahoo’s rigorous standards for accuracy and security. - Drive the adoption of industry-standard UI best practices, including accessibility (A11y), internationalization (i18n), and performance optimization for global scale. - Mentor junior engineers on adopting an AI-augmented mindset, focusing on prompt engineering for productivity and high-level architectural thinking. Qualifications - BS in Computer Science or equivalent technical degree. - 7+ years of hands-on experience in full-stack web application development, with a proven track record of leading complex features at scale. - Advanced expertise in modern JavaScript frameworks including React, Next.js) and Node.js environments. - Strong proficiency in using AI-powered development environments (Copilot, Cursor, etc.) to optimize software delivery. - In-depth knowledge of CI/CD, automated testing frameworks (Jest, Cypress), and cloud services (AWS/GCP). - Experience validating and refining AI-generated code and a focus on responsible AI usage in production environments. - Exceptional communication skills with the ability to influence technical roadmaps across a squad. - A commitment to continuous learning and a demonstrated interest in staying current with emerging AI tools and software engineering methodologies. Preferred Qualifications - Experience building LLM-integrated user interfaces or AI-driven search features. - Advanced knowledge of web performance metrics (Core Web Vitals) and SEO optimization. - Experience leading small project teams or specific technical workstreams within a larger organization. The material job duties and responsibilities of this role include those listed above as well as adhering to Yahoo policies; exercising sound judgment; working effectively, safely and inclusively with others; exhibiting trustworthiness and meeting expectations; and safeguarding business operations and brand integrity. At Yahoo, we offer flexible hybrid work options that our employees love! While most roles don’t require regular office attendance, you may occasionally be asked to attend in-person events or team sessions. You’ll always get notice to make arrangements. Your recruiter will let you know if a specific job requires regular attendance at a Yahoo office or facility. If you have any questions about how this applies to the role, just ask the recruiter! Yahoo is proud to be an equal opportunity workplace. All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. Yahoo will consider for employment qualified applicants with criminal histories in a manner consistent with applicable law. Yahoo is dedicated to providing an accessible environment for all candidates during the application process and for employees during their employment. We believe that a diverse and inclusive workplace strengthens Yahoo and deepens our relationships. When you support everyone to be their best selves, they spark discovery, innovation and creativity. Among other efforts, our 11 employee resource groups (ERGs) enhance a culture of belonging with programs, events and fellowship that help educate, support and create a workplace where all feel welcome. The compensation for this position ranges from $128,250.00 - $266,875.00/yr and will vary depending on factors such as your location, skills and experience.The compensation package may also include incentive compensation opportunities in the form of discretionary annual bonus or commissions. Our comprehensive benefits include healthcare, a great 401k, backup childcare, education stipends and much (much) more.