Programmatic Software Engineer

Prismic

Work from anywhere in Europe! Hello. We're Prismic. At Prismic, we believe the future is all about autonomous websites & hyper-personalised user journeys. Our mission is clear: enable marketers & engineers to shape highly empathic web journeys at scale. We are at a pivotal moment for Prismic. The rise of agentic AI systems is transforming how content is created, edited, and scaled. What used to be a sequence of manual actions is becoming a set of interactions with agents that understand intent and produce concrete results. To lead this shift, we are building agents that will become primary interfaces to the product. The Editor Agent is central to this strategy. The Editor Agent operates within the same editing surface as our users. Its role is to take an instruction, sometimes precise, sometimes ambiguous, and use the same capabilities available to human content writers to create or edit a page in alignment with intent. It can assemble common page elements such as forms, CTA sections, testimonials, company logos, generated images, and much more. It serves both human users working in the editor and other agents that need to perform editing operations as part of larger workflows. Role 💫 As Prismic scales, our ambition grows: we are redefining how marketers interact with content creation itself. We’re looking for a Senior Software Engineer to join our Editor Agent Squad and bring the Editor Agent to a level where it reliably turns instructions into expected outcomes with speed, responsiveness, and correctness. You will design and build the systems that allow the Editor Agent to: -Interpret intent -Plan editing actions -Execute changes safely within the editing surface -Remain observable, testable, and evolvable over time The Editor Agent must expose a clear interface for both human and programmatic callers, and it must grow in capability without becoming fragile as we expand what it can do. What you will be doing 🔧 -Design and implement the core architecture of the Editor Agent, enabling it to transform instructions into reliable editing operations. -Build agentic workflows that orchestrate LLMs, tools, and internal APIs to create or modify pages within the editor. -Engineer systems that allow the agent to assemble rich page structures: forms, CTAs, testimonials, logos, generated images, and other reusable components. -Develop clear and stable interfaces so both human users and other agents can invoke editing capabilities safely. -Ensure the agent is observable and testable: define evaluation strategies, instrumentation, logging, and safeguards. -Implement real-time collaboration mechanisms so agent-driven edits coexist safely with human edits. -Enable localisation and content variation workflows powered by AI while preserving brand voice and structural integrity. -Design the system to evolve gracefully as new editing capabilities are introduced without regressions or architectural fragility. -Contribute across backend and frontend when needed to ensure the editing surface and the agent experience feel seamless. Technologies and tools -TypeScript (NodeJS) -AWS -SST -Serverless architecture -PostgreSQL -LangGraph -Playwright -GitHub Actions -React -Cursor / Claude Code Are you the one? 🧠 Ideally, you: -Are comfortable designing and building scalable backend services using modern TypeScript runtimes and serverless/edge architectures. You are a full-stack engineer or aim to become one. -Have experience (or strong curiosity) in agentic AI systems: orchestrating LLMs, chaining tools, evaluating outputs, and handling ambiguity. -Think in terms of reliability: you care about correctness, observability, testing strategies, and deterministic fallbacks when AI systems fail. -Understand the complexity of editing systems: state synchronisation, concurrency, conflicts, and low-latency updates. -Can design clean, stable interfaces that other systems (and agents) can depend on. -Think pragmatically about trade-offs: balancing responsiveness, cost, determinism, and model capabilities. -Thrive in close collaboration with designers and PMs to turn ambitious AI product ideas into robust production systems. -Write clear code, documentation, and design docs, and raise the bar through thoughtful reviews. -Are not afraid of frontend work, you’re happy to improve the Page Builder UI when it strengthens the end-to-end agent experience. -See AI not just as a feature, but as a new interaction paradigm that requires rethinking product and architecture. Bonus points -Experience building content creation platforms, page builders, or rich editing tools. -Experience designing evaluation frameworks for LLM-based systems. -Experience in high-growth SaaS environments where adaptability and speed are essential. If you don’t tick all the boxes, no worries, we still encourage you to apply. At Prismic, we’re committed to embracing diverse profiles. We care about how you think, how you build, and how you raise the level of the system around you. What are the perks? 🎉 -We are hiring across Europe, and this is a remote position. -MacBook: get top-notch tech to work with. -Home office budget: set up your ideal workspace. -International share-out sessions to discuss current affairs and compare life in your respective countries (led by a public speaking expert). -Yoga classes: online and onsite, 3x a week. -Yearly company gatherings to connect with international teams. Other benefits may depend on the country you’re based in. Afraid of missing out if you’re remote? 🌍 Worry not! -This role follows a hybrid model with mandatory in-office days at least once per quarter, communicated in advance. -Opportunities to spend time at our Paris office. -Regular virtual events and global meetings to stay connected. -A relaxed and informal atmosphere where you can thrive, grow, and keep learning. Ready to help define the future of AI-powered content creation? Apply now to become a Senior Software Engineer at Prismic and help us build the Editor Agent, a primary interface to how websites are created and evolved. We can’t wait to see what you’ll bring to the Editor Agent Squad.

Mediasmart

Do you want to work for one of the biggest consulting companies in Spain, working more than 12 hours a day and not having a life? We don’t either. So come and be part of a cool worldwide company, building things that matter to a real business, learning and making an impact while also enjoying your life. Our motto is: "Life before work". At mediasmart we are looking for a software engineer to join our team, whose main function will be to develop for the main products we offer to users: the API and the web frontend. About mediasmart mediasmart is part of the Affle group - a global adtech company that completed its successful IPO in India in 2019 and has been growing profitably since. Affle group has been in the adtech/martech business for over 15 years and runs multiple ad platform businesses including Appnext, MAAS, mDMP, Jampp, RevX, Vizury, Youappi in addition to mediasmart. Some of the key investors in Affle Holdings include Microsoft and D2C (JV between NTT DoCoMo & Dentsu). At mediasmart, our mission is to allow advertisers to effectively reach audiences across their digital journeys in real time, while maximizing engagement with campaigns and their incremental value to advertisers. mediasmart was one of the first players to enter the programmatic mobile ecosystem and to date our proprietary technology stack includes a DSP, DMP & Ad-Server, as well as direct connections to more than 30 ad exchanges where we buy display, video and native ads on mobile apps, Connected TVs, DOOH and desktop. The mediasmart business is headquartered in Spain having fast growing global teams across APAC, LATAM in addition to Europe.  Our culture and values * Be a generous team player. One that helps others succeed and celebrate their success. * Love curiosity. Keep learning and stay relevant. * It’s a team effort. Collaborate and cooperate to build a smart company. * Go farther. Be an example for others. Set the bar. * Love what we do. Love our work with passion and respect. * Do good and do well. Our work matters. We work hard and never forget to have fun in the process. Absolutely devoted to our customers and to building the best mobile advertising company out there, our passion shines through everything we do. Summary & Duties As a Senior Full Stack Engineer in our product technology team, you will play a key role in developing our web platform, serving large agencies and direct customers. Your responsibilities will span the entire product lifecycle, from initial concept to DevOps and deployment. * Deliver new features in short development cycles. * Polish a web-based platform (frontend and backend) with users all over the world. * Proactively improve and propose projects to make our product more effective and easy to use. * Interact with other teams to build new features or solve technical issues. * Individuals with stronger backend and cloud abilities will find this position customizable to their skills. Requirements * At least 4-5 years of experience as a full-stack developer * Strong knowledge of JavaScript and ES6 * Wide experience with Node.js and REST APIs * Experience with MongoDB database * Familiarity with cache databases, its data structures and operation commands * GNU/Linux administration * Exposure to cloud: AWS, GCP, Azure… * Proficiency in Spanish (native level), both oral and written, as this is the language used for interaction with the team.  * Fluent in English, both oral and written, as this is the language used for interaction with most of the stakeholders and the business language for all our tools and documentation. Desirable requirements * Experience working in a distributed team * AWS: In particular EC2, S3, Route53, Elastic Transcoder, load balancing, and CloudFront * Experience working with relational databases: in particular GCP BigQuery Skills * Analytical, curious, goal-oriented * Strong orientation to detail, with an ability to collect and organize data, understand the results, and communicate them effectively * Having a good eye for design * Excellent interpersonal and communication skills, both written and oral * Ability to motivate others to work as a team to meet the business case and customer goal * Strong influencing and negotiating skills * Being proactive * Ability to take personal initiative and prioritize workload whilst being a team player within a collaborative environment

Mediasmart

Do you want to work for one of the biggest consulting companies in Spain, working more than 12 hours a day and not having a life? We don’t either. So come and be part of a cool worldwide company, building things that matter to a real business, learning and making an impact while also enjoying your life. Our motto is: "Life before work". At mediasmart we are looking for a software engineer to join our team, whose main function will be to develop for the main products we offer to users: the API and the web frontend. About mediasmart mediasmart is part of the Affle group - a global adtech company that completed its successful IPO in India in 2019 and has been growing profitably since. Affle group has been in the adtech/martech business for over 15 years and runs multiple ad platform businesses including Appnext, MAAS, mDMP, Jampp, RevX, Vizury, Youappi in addition to mediasmart. Some of the key investors in Affle Holdings include Microsoft and D2C (JV between NTT DoCoMo & Dentsu). At mediasmart, our mission is to allow advertisers to effectively reach audiences across their digital journeys in real time, while maximizing engagement with campaigns and their incremental value to advertisers. mediasmart was one of the first players to enter the programmatic mobile ecosystem and to date our proprietary technology stack includes a DSP, DMP & Ad-Server, as well as direct connections to more than 30 ad exchanges where we buy display, video and native ads on mobile apps, Connected TVs, DOOH and desktop. The mediasmart business is headquartered in Spain having fast growing global teams across APAC, LATAM in addition to Europe.  Our culture and values * Be a generous team player. One that helps others succeed and celebrate their success. * Love curiosity. Keep learning and stay relevant. * It’s a team effort. Collaborate and cooperate to build a smart company. * Go farther. Be an example for others. Set the bar. * Love what we do. Love our work with passion and respect. * Do good and do well. Our work matters. We work hard and never forget to have fun in the process. Absolutely devoted to our customers and to building the best mobile advertising company out there, our passion shines through everything we do. Summary & Duties As a Senior Full Stack Engineer in our product technology team, you will play a key role in developing our web platform, serving large agencies and direct customers. Your responsibilities will span the entire product lifecycle, from initial concept to DevOps and deployment. * Deliver new features in short development cycles. * Polish a web-based platform (frontend and backend) with users all over the world. * Proactively improve and propose projects to make our product more effective and easy to use. * Interact with other teams to build new features or solve technical issues. * Individuals with stronger backend and cloud abilities will find this position customizable to their skills. Requirements * At least 4-5 years of experience as a full-stack developer * Strong knowledge of JavaScript and ES6 * Wide experience with Node.js and REST APIs * Experience with MongoDB database * Familiarity with cache databases, its data structures and operation commands * GNU/Linux administration * Exposure to cloud: AWS, GCP, Azure… * Proficiency in Spanish (native level), both oral and written, as this is the language used for interaction with the team.  * Fluent in English, both oral and written, as this is the language used for interaction with most of the stakeholders and the business language for all our tools and documentation. Desirable requirements * Experience working in a distributed team * AWS: In particular EC2, S3, Route53, Elastic Transcoder, load balancing, and CloudFront * Experience working with relational databases: in particular GCP BigQuery Skills * Analytical, curious, goal-oriented * Strong orientation to detail, with an ability to collect and organize data, understand the results, and communicate them effectively * Having a good eye for design * Excellent interpersonal and communication skills, both written and oral * Ability to motivate others to work as a team to meet the business case and customer goal * Strong influencing and negotiating skills * Being proactive * Ability to take personal initiative and prioritize workload whilst being a team player within a collaborative environment