{"id":455885,"url":"https://alion.io/job/perx-technologies-full-stack-ai-engineer-ruby-on-rails-as-core","title":"Full Stack AI Engineer (Ruby on Rails as core)","company":{"id":175264,"name":"Perx Technologies","domain":"perxtech.com","url":"https://alion.io/company/perx-technologies","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Schema","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agentic Workflows","optional":false},{"name":"AI Agents","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Docker","optional":false},{"name":"Ruby on Rails","optional":false},{"name":"Angular","optional":true},{"name":"Function Calling","optional":true},{"name":"JavaScript","optional":true},{"name":"LLM","optional":true},{"name":"PostgreSQL","optional":true},{"name":"Ruby","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-07-02T04:43:31Z","employer_posted_date":"2026-07-02","last_verified_at":"2026-10-27T03:34:47Z","board_verified":true,"closed_at":null,"days_open":117,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":117},"description":"About Perx: Perx Technologies is a behavioral intelligence and marketing SaaS Platform headquartered in Singapore, helping large enterprises and digital natives transform from transient and transactional brands to delivering meaningful B2B2X engagements and relationships in the mobile-first economy. The API-first platform enables businesses to focus on use cases and creative engagements to solve their monetization, retention, and user behavior challenges across disparate CRM and marketing solutions in a matter of minutes.Quick Snapshot:The Senior Full Stack Software Engineer is a high-impact role responsible for designing and scaling our next-generation distributed platform, including agentic AI systems and autonomous workflow orchestration. You will work closely with architecture and product teams to build resilient, high-performance software that powers intelligent decisioning and real-time engagement.You will help shape the technical direction of the platform, including the integration of AI agents that can reason, act, and coordinate across services, APIs, and data systems.What’s the Role?\nYou will:\nInfluence and contribute to the technical vision of platform architecture, including AI-native and agent-driven system design\nDesign and implement scalable, multi-tenant, microservices-based architectures with embedded agentic workflows\nBuild and deploy autonomous and semi-autonomous AI agents that support:Customer engagement orchestration\nDecision automation and personalization\nEvent-driven workflow execution across distributed systems\n\nDefine information architecture and system design, including data models, APIs, and service interactions that support agent reasoning and execution\nDesign solution strategies focused on scalability, maintainability, interoperability, and AI extensibility\nEnsure clean, modular, testable code aligned with engineering best practices and agent-safe design principles\nConduct and enforce rigorous code reviews and architectural governance\nIdentify and mitigate technical risks across traditional services and AI/agent workflows\nImplement robust testing strategies (unit, integration, performance, and AI/agent behavior validation)\nCollaborate with product and architecture teams to define agent capabilities and system boundaries\nMentor engineers on modern software engineering practices and agent-based system design\nLeverage modern AI tooling, open-source frameworks, and emerging technologies to accelerate the development of intelligent systems\nDrive troubleshooting, debugging, and root cause analysis across distributed systems and agent execution layers\nWho Are We Looking For?\nBS/MS in Computer Science, Engineering, or equivalent experience\n5+ years of application development experience in Ruby on Rails or other OO languages\nStrong experience building multi-tenant, microservices-based distributed systems\nHands-on experience with API and SDK design, scalable backend systems, and service-oriented architectures\nProven experience in AWS, Docker, and DevOps practices in agile environments\nExperience with automation tools (Ansible or similar) is a plus\nStrong knowledge of relational databases (PostgreSQL), data modeling, and system design\nFrontend expertise in Angular 2+, AngularJS, TypeScript, JavaScript, HTML5, CSS\nStrong understanding of object-oriented design, design patterns, and multi-tier architectures\nExperience building highly interactive and real-time applications\nAgentic AI & Modern Engineering (Highly Valued):\nExperience or strong interest in building agentic AI systems, autonomous workflows, or LLM-powered applications\nFamiliarity with AI orchestration patterns (tool use, planning loops, memory systems, multi-agent coordination)\nExperience integrating AI models into production-grade systems (LLMs, APIs, vector databases, etc.)\nAbility to design systems where software agents can execute tasks, make decisions, and interact with APIs/services\nStrong systems thinking for balancing determinism, reliability, and AI-driven variability\nWhat’s on Offer?\nCollaborative environment in one of Asia’s leading Martech and Fintech SaaS companies\nOpportunity to work with global enterprise clients across banking, retail, insurance, and telecom industries\nExposure to platforms serving 1Bn+ end users and 50Mn+ daily consumer engagements\nHigh-growth environment with cross-functional development opportunities across product, engineering, and AI innovation\nStrong investment in engineering excellence and emerging technology capabilities, including AI-native platform development\nWhy Join Us?\nWe believe product innovation comes from people innovation. 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