Junior Full-Stack / Integration Developer – AI SaaS

Junior Full-Stack / Integration Developer – AI SaaSLocation: Brașov, RomaniaType: Full-time, on-site

Company: Aria KnowsAbout Aria KnowsAria Knows is an AI-powered platform built to help small businesses automate and digitalize their everyday operations — from customer communication to CRM, invoicing, workflows and reporting.ARIA connects the signals a business already generates — calls, WhatsApp conversations, bookings, customers, invoices and operational data — and turns them into useful actions and insights.Our platform includes AI voice and conversational agents available 24/7, CRM and customer history, automated workflows, invoicing and business reporting.ARIA was created by entrepreneurs with more than a decade of hands-on experience operating businesses in hospitality and tourism.

We started by solving problems we experienced ourselves and are now building the platform for small businesses across multiple industries.Our goal is simple: make powerful AI and automation genuinely useful for real businesses.The RoleWe are looking for a Junior Full-Stack / Integration Developer who enjoys building things, solving problems and learning fast.You will work directly on the Aria Knows product alongside the development, AI and product teams.This is not a role where you will only maintain existing code.You will help build real features used by real customers: integrations, APIs, interfaces, automations and AI-powered workflows.What you'll work onBuild and improve front-end and back-end features of the ARIA platformDevelop and maintain integrations with external platforms and servicesWork with REST APIs, webhooks and structured dataConnect systems such as CRM, messaging, telephony, calendars, invoicing and other business toolsSupport AI-powered conversational and automation workflowsWork with databases and business dataTroubleshoot and debug technical issuesTest features before they reach productionWrite clean, maintainable and understandable codeParticipate in code reviewsCollaborate directly with developers, product and founders on new featuresWhat we're looking forYou don't need to know everything already.We care about strong fundamentals, curiosity and your ability to figure things out.Must haveGood programming fundamentalsExperience with JavaScript / TypeScript, Python or another modern programming languageBasic understanding of front-end, back-end and databasesExperience working with REST APIsUnderstanding of JSON, HTTP and webhooksFamiliarity with SQL and databasesGit / GitHub experienceAbility to debug and investigate technical problemsAbility to read and understand technical documentation in EnglishStrong problem-solving skillsCuriosity and willingness to learn quicklyNice to haveExperience with any of the following is a bonus, but not required:Node.js / TypeScriptReact / Next.jsPythonPostgreSQLDocker / LinuxOpenAI or other LLM APIsAI agents / RAG / vector databasesWebSocketsWhatsApp / Meta APIsTwilio or telephony integrationsCRM, calendar or invoicing integrationsCloud platformsBuilding SaaS products or your own applicationsExperienceWe are looking for someone at junior level — approximately 0–2 years of professional experience.Personal projects, freelance projects, university projects and things you have built on your own absolutely count.A Computer Science / Software Engineering degree is welcome, but practical experience can be just as valuable.Who will probably enjoy this roleYou might be a good fit if:You like understanding how systems work togetherWhen something breaks, your instinct is to investigate whyYou enjoy building things rather than only following tutorialsYou use AI tools to become a better developer, but you want to understand the code they generateYou are comfortable asking questions when you don't know somethingYou want to see your work reach real customersYou are interested in AI, SaaS and entrepreneurshipYou want to grow together with an early-stage productWhy ARIAYou will join us while the product is still growing, which means your work will have visible impact.You will have the opportunity to work with modern AI technologies, APIs, automation, integrations and real business problems — not artificial training exercises.You will also work closely with the people building the product and the entrepreneurs using it.How to ApplyPlease send us:Your CV or LinkedIn profileYour GitHub / portfolio, if available1–3 projects you have built or contributed toA short explanation of what you personally built in those projectsTechnologies you enjoy working withYour availabilityAnd answer one question:Tell us about something you built that didn't work at first. What was wrong, and how did you figure it out?We care much more about how you think and what you've built than about having the perfect CV.