Sr. Full Stack AI Engineer

Senior Full Stack Engineer – Enterprise Analytics PlatformLocation:Remote (Preference for India-based candidates)Compensation:Competitive salary + significant equity packageCompany:ContexQ (Singapore HQ)About ContexQAt ContexQ, a Singapore based B2B SaaS AI Start-up, we’re redefining how organizations tackle some of the world’s toughest challenges—financial crime, fraud, and risk management—through a groundbreaking contextual decision intelligence platform.By marrying symbolic AI, vector, and graph AI, we process trillions of data points from corporate registries, ESG, SDG, and supply chain data to deliver transparent, ethical, and actionable insights.Our mission is to empower organizations with unparalleled intelligence while upholding the highest standards of integrity and societal impact. Join us to build a NextGen Contextual Decision Intelligence Enterprise Analytics Platform that will set a new standard for **explainable AI (XAI) **in high-stakes industries.The OpportunityWe’re seeking a passionate and sharp Full Stack Developer to architect and build the front-end and back-end systems for ContexQ’s platform. You’ll work closely with our AI Engineers to create a scalable, intuitive platform that visualizes complex network relationships, delivers real-time risk scores, and integrates with advanced AI models.This is a chance to solve intricate technical challenges, from real-time very large data processing to interactive graph visualizations, while contributing to a mission that fights financial crime, builds customer intelligence and promotes ethical decision-making.Role OverviewWe are looking for a **Senior Full Stack Engineer ** to drive the development of user-facing solutions built on our custom graph database and high-performance analytics engine. You will work with advanced backend technologies—Hadoop, Apache Spark, and Scala—to deliver high-impact data applications, real-time dashboards, and intuitive interfaces that make complex analytics accessible to business users.This role requires building systems that handle visualization of graphs with millions of nodes, deliver sub-100ms API response times at scale, and process TB-scale datasets in real-time.Core ResponsibilitiesFrontend & Visualization (40%)Build responsive, scalable web apps (React/TypeScript) for advanced enterprise analytics and data visualizationDevelop interactive graph/network visualizations capable of rendering millions of nodes and edges smoothlyOptimize frontend performance for real-time exploration of large, multi-dimensional datasetsDesign interfaces for explainable AI and complex entity relationship analyticsImplement advanced rendering techniques (WebGL, canvas virtualization) for massive dataset visualizationBackend & API Development (35%)Architect and implement fast, scalable GraphQL/REST APIs with sub-sec response times for analytics, entity resolution, and graph queriesDevelop and orchestrate microservices using Node.js, Python, ScalaBuild and maintain data transformation and aggregation pipelines, optimizing for low-latency and high throughputIntegrate backend analytics powered by Apache Hadoop, Spark, and our proprietary graph databaseWork with our custom graph query language and SDKs to expose graph analytics capabilitiesCloud Infrastructure & Data Platform (25%)Deploy, scale, and monitor services on GCP (Kubernetes, GKE, Cloud Run, Pub/Sub)Implement cloud functions and serverless analytics workflowsDesign and optimize large-scale data processing pipelines handling TB-scale data with Apache Hadoop and SparkCollaborate with data engineers on ETL processes, data architecture, and real-time data integration strategiesEnsure platform reliability with 99.9% uptime SLAsRequired QualificationsTechnical SkillsAtleast5–8+ years' experienceas a full stack engineer in analytics, big data, or enterprise environmentsStrong hands-on experience with React, TypeScript, D3.js, WebGL, Node.js, Python, ScalaAdvanced expertise withHadoop and Apache Sparkfor distributed data processing and analyticsExperience building rich data visualizations and enterprise dashboards handling millions of data pointsProficient in** API design** (GraphQL/REST), microservices, and optimizing for real-time and large-scale data flowsDatabase exposure: PostgreSQL, Redis,Elasticsearch ; experience designing or scaling custom graph engines a plus**GCP experience **with services likeGKE , Pub/Sub, BigQuery, and Cloud RunDevOps & DeploymentEnable Scalable Deployment: Deploy and manage services on cloud platforms (AWS/Azure/GCP) using Docker and Kubernetes, optimizing for low-latency (Ethical & Explainable AI Focus Champion Transparency:Integrate principles of fairness and interpretability into API design and frontend visualizations, ensuring outputs align with XAI goals and are understandable to users.Tech Stack You'll Work With (Not Exhaustively listed here due to working on Stealth Mode)Backend & Processing: Python (FastAPI), Scala (optional exploration for specific tasks), Apache Spark, Hadoop, Iceberg, Elasticsearch Databases: PostgreSQL, Milvus (Vector DB), MongoDB (NoSQL) Frontend: React, Tailwind CSS, D3.js, Plotly DevOps: Docker, Kubernetes, AWS/Azure/GCP, CI/CD tools (e.g., Jenkins, GitLab CI) AI Integration: Familiarity with integrating outputs from libraries like NetworkX, PyG (for GNNs), SHAP, LIME (for XAI).Preferred ExperienceDeploying and optimizing big data analytics pipelines in Hadoop/Spark ecosystemsUsing Scala for high-performance backend systems, data transformations, or distributed applicationsHands-on work with enterprise analytics, operational intelligence, or business reporting platformsExperience with graph-based data modeling, entity resolution, or custom database architecturesWorking with proprietary query languages or custom database SDKsStartup or high-growth environment exposureGeneral Qualifications:PhD or Master's (Preferred) degree in Computer Science, Software Engineering, or a related field. Experience with agile development methodologies.Excellent communication skills for explaining complex technical ideas. Solid understanding of software engineering best practices and design patterns.MindsetProactive, self-driven, and comfortable tackling ambiguous and complex technical problemsAdaptable and eager to take on multiple roles in a dynamic, product-focused teamDeep passion for building transformative, high-performance analytics technologyQuick learner ready to master our proprietary systems while leveraging core distributed systems expertiseWhat You'll BuildGraph Investigation Console : Visual interactive exploration of enterprise networks with millions of entitiesEntity Resolution Workbench : Approve and audit entity matches with explainable analytics at scaleAnalytics Dashboards : Real-time operational, risk, and business metric monitoring processing TB of dataAdvanced Reporting Interfaces : Visualize supply chain, ESG, and other key KPIs with sub-second responseCustom Graph Explorer : Navigate and analyze hidden relationships in enterprise data using our proprietary graph engineOur TechnologyProprietary Graph Database : Custom-built for multi-dimensional analytics, offering 10x performance over traditional graph DBsCustom Query Language : Purpose-built for complex enterprise analytics (comprehensive training provided)SDKs and APIs : Well-documented interfaces for all platform capabilitiesScale : Handle billions of entities, TB-scale processing, and millisecond query responsesWhy Join UsImpact : Shape the architecture of an essential platform for enterprise decision-makingInnovation : Work on proprietary graph technology, big data pipelines, and cutting-edge AIGrowth : Influence core engineering and play a central role in building the early teamLearning : Comprehensive onboarding on our proprietary systems with continuous learning opportunitiesFlexibility & Equity : Significant early-stage equity, learning resources, and a high-impact remote-first cultureModern StackReact, TypeScript, D3.js, Deck.gl, Node.js, Python, Scala, Hadoop, Spark, PostgreSQL, Redis, BigQuery, GCP, Docker, Kubernetes, Custom Graph EngineApplication ProcessTechnical Screening: Includes full-stack, big data, and cloud architectureTake-Home Challenge: Build a complex data visualization or analytics componentTechnical Team InterviewCulture Fit Discussion with FoundersJoin us in building the next generation of enterprise analytics. We provide comprehensive onboarding for our proprietary systems but expect quick ramp-up on core distributed systems concepts. If you're excited about pushing the boundaries of what's possible with data visualization and analytics at scale, we want to hear from you.