{"id":1449218,"url":"https://alion.io/job/sigma-software-group-middle-typescriptnode-js-developer-with-ai-experience-adtech-2","title":"Middle Typescript/Node.js Developer with AI experience (AdTech)","company":{"id":6266,"name":"Sigma Software Group","domain":"sigma.software","url":"https://alion.io/company/sigma-software-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"SmartRecruiters","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Kyiv, Ukraine"],"countries":["UA"],"hiring_countries":["UA"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EventBridge","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"CloudFormation","optional":false},{"name":"DynamoDB","optional":false},{"name":"GraphQL","optional":false},{"name":"LLM","optional":false},{"name":"Node JS","optional":false},{"name":"OpenAI","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Terraform","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-09-28T07:49:29Z","employer_posted_date":"2026-09-28","last_verified_at":"2026-10-05T23:22:28Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"Are you passionate about building intelligent, scalable, and high-performance platforms powered by AI technologies? We are looking for a Middle/Senior AI & Back-End Developer to join Sigma Software and contribute to the transformation of a global AdTech product into a modern AI-enabled ecosystem.\nIn this remote-friendly role, you will work with cutting-edge cloud-native and AI technologies, helping shape a Platform-First architecture built around reusable microservices, serverless infrastructure, and intelligent automation capabilities.\nWe at Sigma Software value engineering excellence, innovation, and collaboration. You will have an opportunity to work on a product trusted by globally recognized publishers while growing your expertise in AI integrations, cloud platforms, and scalable distributed systems.\nCUSTOMER\nOur Customer is a Sweden-based AdTech company specializing in advanced self-serve advertising platforms that automate direct transactions between advertisers and premium global publishers. Their solutions improve transparency and operational efficiency in digital advertising and are trusted by globally recognized brands such as TripAdvisor, Bloomberg, The Washington Post, Opera, and Dow Jones. The company processes millions of advertising transactions worldwide and actively invests in AI-driven automation and intelligent data capabilities.\nPROJECT\nThe project focuses on the strategic transformation of an existing AdTech ecosystem toward a Platform-First, AI-enabled architecture. The Customer is transitioning from monolithic and client-specific implementations into a scalable, API-driven, multi-tenant ecosystem powered by reusable microservices and intelligent services.\nThe team is building modern cloud-native solutions using AWS serverless technologies while introducing AI-assisted automation, recommendation systems, workflow optimization, data enrichment, and LLM-powered capabilities across the advertising lifecycle.\nKey Technologies: TypeScript, Node.js, AWS Lambda, API Gateway, DynamoDB, EventBridge, OpenAI APIs, GraphQL, RESTful APIs, Terraform, CloudFormation, Vector Databases\n Develop and maintain high-performance Back-end microservices and AI-enabled services using TypeScript and Node.js\nDesign, implement, and integrate AI and LLM-powered platform features\nBuild scalable serverless solutions using AWS Lambda, API Gateway, DynamoDB, and EventBridge\nCollaborate with cross-functional teams on API-first architecture and OpenAPI specifications\nEnsure tenant data isolation and compliance with established AdTech data models\nContribute to reusable libraries, templates, AI integration patterns, and engineering standards\nParticipate in code reviews focused on performance, reliability, observability, and service quality\nTranslate product and AI feature requirements into scalable technical solutions\nSupport the platform transformation toward automation, standardization, and intelligent reusability\nContribute to continuous improvement initiatives and technical decision-making processes\n 3+ years of commercial experience as a Back-end Developer or AI Software Developer\nStrong hands-on experience with TypeScript and Node.js\nExperience building API-first microservice architectures\nPractical experience integrating AI services, LLM APIs, or AI-assisted workflows\nHands-on experience with AWS serverless technologies including Lambda, API Gateway, DynamoDB, and EventBridge\nUnderstanding of RESTful and GraphQL APIs\nKnowledge of prompt engineering concepts and AI integration approaches\nUnderstanding of multi-tenant architectures and logical data isolation principles\nInterest in AdTech products, automation, and AI-driven optimization\nUpper-Intermediate or higher English level\nWill be a plus\nExperience with ML and AI experimentation projects\nExposure to recommendation systems or data intelligence platforms\nExperience working with vector databases\nFamiliarity with Infrastructure as Code tools such as Terraform or CloudFormation\nUnderstanding of observability and monitoring practices in distributed systems\nExperience working with scalable cloud-native architectures\n Personal Profile\nStrong analytical and problem-solving skills\nProactive and ownership-driven mindset\nPassion for modern Back-end engineering and AI technologies\nAbility to collaborate effectively within distributed international teams\nInterest in innovation, experimentation, and continuous learning\nStrong communication skills and attention to 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