Top Senior Full-Stack Engineer Jobs in Chicago, IL

Join a small engineering team as a hands-on full stack developer. Accelerate frontend delivery, then take on backend services, infrastructure, and core capabilities. Own features from design through release and operational stability, collaborate with customer-facing engineers and founders, and promote effective AI-assisted development practices. The role requires strong backend-oriented full stack skills, product-launch experience, system design judgment, self-direction, and periodic travel to a California office.

Lead design, development, testing, and deployment of cloud-native full‑stack applications and microservices. Provide technical leadership, mentor engineers, implement CI/CD and automated tests, and drive modernization using GCP or similar cloud platforms, containers, and enterprise security best practices.

Own backend services and frontend experiences across signup, onboarding, verification, activation, checkout, and customer lifecycle management. Build event-driven systems, integrate identity and risk providers, handle sensitive financial data, run experiments, and analyze funnels using SQL and Snowflake. The role also involves evaluating AI-generated code, analysis, and customer messaging while collaborating with Product, Data, and Risk in an ambiguous, high-ownership environment.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

Lead end-to-end design, development, and delivery of full‑stack features; drive architecture and code reviews; coordinate engineering work, write design docs and tests, and participate in Agile ceremonies. Must have blockchain/crypto experience.

Owns end-to-end application features across React, Spring Boot, Node.js, and PostgreSQL. Responsibilities include translating Figma designs, developing APIs and supporting services, evolving data models, writing tests, deploying on Google Cloud, maintaining CI/CD pipelines, collaborating with stakeholders, and documenting architecture, APIs, and data models.

Build and own CRM features and workflow automations supporting sales, marketing, onboarding, and support. Develop full-stack functionality using Next.js, FastAPI, Inngest, and related technologies; partner with teams to automate workflows; create agentic solutions for enrichment and task automation; and manage features from planning through monitoring and refinement. The role requires strong web development expertise, product sense, autonomy, communication, and experience with modern JavaScript or TypeScript frameworks and orchestration tools.

Design, develop, test, and maintain cloud-native full-stack applications using React, TypeScript, and Node.js. Build responsive user interfaces, scalable APIs, backend services, integrations, and relational data models. Integrate enterprise data, AI services, LLMs, and intelligent automation. Implement security, testing, CI/CD, observability, deployment, troubleshooting, and performance optimization. Collaborate with product, architecture, AI, data, QA, cloud, and UX teams throughout solution delivery.

Develop and maintain full-stack TypeScript applications using React, Node.js, and PostgreSQL. Build intuitive user interfaces, scalable APIs, and secure systems; collaborate on architecture, code reviews, testing, deployments, incident response, and infrastructure improvements. Mentor engineers, reduce technical debt, participate in Agile ceremonies, and support production systems in a remote-first environment.

Design, develop, test, deploy, and maintain full‑stack enterprise applications in AWS. Build front-end components (Angular/TypeScript), backend services (Java/Node.js), REST APIs, integrations, and relational database solutions. Troubleshoot production issues, participate in architecture and design, support CI/CD and deployment, conduct code reviews, mentor developers, and collaborate with Product, QA, and DevOps in Agile teams.

Develop and maintain Java applications, RESTful services, and Angular frontends using Spring Boot and NgRx. Deploy applications to cloud platforms, practice TDD, manage CI/CD with Jenkins, and work with Oracle and PostgreSQL databases. Participate in agile processes, collaborate with cross-functional teams, mentor engineers, and independently lead technical initiatives and feature delivery.

Own and develop a TypeScript monorepo spanning Next.js, Expo, and Cloudflare Worker applications. Build PostgreSQL and Prisma data models, webhook and background job systems, secure financial-data and authentication flows, and AI features using LLM tool-calling. Handle production ownership, on-call responsibilities, incident analysis, code review, and reliability improvements. Collaborate remotely with strong written and verbal English while maintaining security, performance, and data integrity.

Build enterprise workforce management software for forecasting, staffing, scheduling, adherence, intraday management, and operational reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, PostgreSQL data models, integrations, and cloud-native deployments. Support CI/CD, production troubleshooting, performance optimization, architecture discussions, code reviews, and stakeholder collaboration across product, QA, DevOps, UX, and operations.

Build enterprise-scale workforce management software for forecasting, capacity planning, scheduling, adherence, intraday management, and reporting. Develop Java and Spring Boot microservices, React and TypeScript applications, REST APIs, event-driven workflows, database models, integrations, and cloud-native deployments. Support CI/CD, performance optimization, production troubleshooting, architecture discussions, and client-facing collaboration. Apply workforce management expertise, complex business rules, scheduling algorithms, and high-volume operational data experience.

Build and maintain payment infrastructure for an online marketplace, including payment flows, banking integrations, internal ledgers, and financial record-keeping systems. The role focuses primarily on backend development in Python, with additional web and mobile frontend work using React. Engineers will support high-value transfers, new financial products, and collaborate within a small payments team.

Build and operate full-stack internal web applications and conversational AI bots using React, TypeScript, Node.js, Elasticsearch, Kibana, LLMs, RAG, and vector search. Responsibilities include technical design, development, testing, CI/CD deployment, feature flag management, production operations, and on-call support. The role also involves replacing legacy SaaS tools, integrating Elastic Stack capabilities, and using AI coding assistants to accelerate delivery.

Develop and support a multi-tenant operational platform for alternative investment managers. Build frontend features, backend services, APIs, data-ingestion workflows, validation, scheduled jobs, database migrations, audit trails, access controls, and automated tests. Investigate production issues, improve reliability, support customer deployments, participate in code reviews and releases, and coordinate with technical and DevOps teams on installations and upgrades.

Build and scale foundational services, APIs, pipelines, and distributed systems for an AI-powered SMS marketing platform. Own backend systems, improve scalability, reliability, modularity, and observability, and collaborate with engineering, data, product, and go-to-market teams. Use AI-first development practices, contribute to AI integration strategy, reduce technical debt, and support high-scale customer workloads across AWS and Kubernetes.

Build and scale highly available applications and services for Mux’s video platform. Develop customer-facing features across Elixir and Go backend services and React frontend applications, including billing, usage, identity, account management, webhooks, and alerting. Collaborate on technical roadmaps while solving distributed systems, concurrency, scheduling, scaling, and platform resilience challenges. Deploy complex applications using cloud platforms and Kubernetes.

Build and scale full-stack platform services for user onboarding, identity management, privacy controls, and secure public-safety workflows. Develop React applications, Node.js APIs, database models, and complex SQL queries. Containerize applications with Docker, deploy Kubernetes microservices using Helm, and leverage AWS services including S3, API Gateway, and SQS. Solve authentication, authorization, performance, and data-security challenges while shaping foundational platform architecture.

Lead full-stack development for secure, scalable mission planning and command-and-control software supporting space communications programs. Build frontend interfaces and backend services, design APIs, translate mockups into applications, conduct code reviews, improve quality and security, and mentor junior engineers. Work with modern web frameworks, containerized microservices, and highly secure government environments while owning technical problems end to end.

Own Hercules’ full data stack, including ETL from third-party providers into BigQuery, data modeling with dbt and medallion architecture, semantic-layer metric definition, and self-service business intelligence in Omni. Build reliable, maintainable systems and dashboards while applying strong software architecture, API design, code quality, and AI-assisted development practices.

Design, build, and maintain AI-powered B2B SaaS products across frontend, backend, and AI. Own projects end-to-end, collaborate with product and design, ensure maintainability, mentor teammates, and inform roadmap and implementation decisions.

The Senior Fullstack Software Engineer will design, implement, and maintain features for Conveyor's SaaS platform, involving both backend and frontend work, while collaborating closely with team members and mentoring juniors.

Build and evolve Humana’s NBA Action Library and Command Center using React, TypeScript, Node.js, PostgreSQL, and Kafka. Develop accessible front-end experiences, REST APIs, data models, integrations, automated tests, and reliable state-driven workflows. Collaborate with product, design, and platform teams to deliver secure, scalable software supporting action creation, governance, versioning, preview, and publishing.