110 backend fullstack developer jobs at 87 companies in United States
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Sr. Fullstack Platform Engineer - (Backend Focus)
Los Angeles or California or United States
$140k-$180k/yrRemoteFull Time
Salt AI: Software providing governed, auditable AI workflows for regulated life sciences, financial, energy, and government organizations.
Senior backend/platform engineer with deep Python/Django, APIs, cloud infrastructure, Kubernetes, distributed systems, workflow execution, observability, and fullstack familiarity (TypeScript/React). High product judgment and experience using AI engineering tools.
Python, Django, TypeScript, React, Kubernetes, Claude Code, Cursor, Codex, GitHub
Polymarket: Private blockchain-based prediction market platform where users trade on outcomes of real-world events.
7+ YOERequires 7+ years of fullstack engineering experience, depth across frontend and backend, experience shipping onboarding or acquisition funnels, cross-team collaboration, product judgment, system-level tradeoffs, and clear communication.
Tata Consultancy ServicesBSE: 532540: Global leader in IT services, consulting, and business solutions.
6+ YOE.NET and Angular fullstack experience, 6+ years in apps development, strong UI and backend skills, SQL/NoSQL knowledge, SCM and DevOps tooling, bachelor's in computer science or equivalent.
General Atomics Integrated Intelligence, Inc.: Private defense intelligence providing geospatial data management, analytics, visualization, and software to government and commercial clients.
8+ YOEExpert Java and Spring Boot backend/fullstack experience, Linux, Docker, Kubernetes, AWS, helm/helmfile, Kafka/NiFi/GeoMesa familiarity, ability to obtain DoD Top Secret/SCI clearance, senior-level software engineering and technical leadership.
Hims & HersNYSE: HIMS: Publicly traded U.S. telehealth platform connecting consumers with licensed providers and personalized prescription and wellness care.
15+ YOE15+ years software engineering experience with deep architectural expertise; experience delivering backend systems at scale; backend languages (Kotlin, Java, Go); frontend (React, Next, GraphQL); CI/CD, cloud, and observability experience; strong communication and mentoring skills.
G-P: Private SaaS global employment platform helping companies hire, onboard, pay, and manage teams across 180+ countries.
Bachelor’s or Master’s degree in Computer Science, Engineering, or related field; fullstack web, Generative AI, LLM, backend, RAG, CI/CD, cloud, and AWS experience required.
Proton.ai: The industry cloud platform for distributors providing AI-powered sales, CRM, catalog management, and order entry.
5+ YOE5+ years fullstack delivery; strong fundamentals; hands-on with AI tools; generalist across frontend/backend; excellent communication and ownership.
TypeScript, Vue, Python, SQL, PostgreSQL, Claude Code, Cursor, Codex
Airtop: AI web automation platform that helps marketers, sales teams, and operations staff build and run web agents.
5+ YOE5+ years building scalable production backend systems and APIs; strong distributed systems, cloud infrastructure, reliability engineering, and TypeScript skills; familiarity with Go or Python and frontend development.
Hipp Health: AI-native healthcare platform for behavioral health practices, streamlining scheduling, clinical documentation, billing, and compliance.
3+ YOE3–4 years software engineering experience; proficiency across backend and frontend; experience with Python, Go, Java, or Node.js/TypeScript; React and API experience; strong fundamentals in system design and data structures.
Rippling: Unified workforce management platform for HR, IT, and Finance.
8+ YOERequires 8+ years of software engineering experience, scalable backend expertise, Python, Golang, and production systems experience; React and React Native, distributed systems, and strong communication skills are also required.
KIS Solutions: Private technology consulting and software development firm delivering software systems for Fortune 500 companies and startups worldwide.
5+ YOE5+ years software engineering including senior/lead experience; expert Java/Spring Boot backend, React/TypeScript frontend, cloud-native (AWS), Kafka, PostgreSQL, CI/CD and testing practices.
React, Spring Boot, Spring Data JPA, Hibernate, Java, TypeScript, React Query, Zustand, PostgreSQL, REST APIs, AWS, EKS, RDS, S3, Google BigQuery, Apache Kafka, GitHub Actions, ArgoCD, Git, Kubernetes, Spring Batch, AG Grid, Microsoft Entra ID, MSAL, OAuth2/OIDC, MapStruct, Lombok, Terraform, AWS CDK, Cursor, Claude Code, GitHub Copilot, Kiro, Model Context Protocol (MCP), GitOps
6+ YOE6+ years fullstack experience; deep knowledge of healthcare interoperability (FHIR, HL7 v2), EHR integrations (Epic), secure API/authentication, and identity assurance standards; strong backend/frontend skills.
Whatnot: Live shopping marketplace connecting buyers and sellers.
4+ YOE4+ years of generalist software development experience, bachelor's degree in computer science or related field or equivalent experience, and full-stack proficiency across mobile, web, and backend systems.
SnowflakeNYSE: SNOW: Cloud-based data platform for AI, analytics, and data applications.
Senior-level full-stack engineer with experience shipping customer-facing products, building scalable systems, mentoring engineers, and working across frontend and backend stacks.
Commure: AI-native healthcare technology providing revenue-cycle, clinical-workflow, and ambient-AI software to health systems and providers.
Professional software development experience; strong full-stack skills; experience with React/Flutter/Typescript, Python and backend frameworks; familiarity with Docker/Kubernetes and production reliability; BS/MS in CS/Engineering or equivalent.