799 senior backend engineer jobs at 423 companies in Dumont, NJ
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Senior Backend Engineer
London or New York City or Paris or London or London
HybridFull Time
SeedLegals: Private UK legal-technology platform that automates fundraising, cap-table, and business legal documents for startups and small businesses.
5+ YOESenior backend engineering experience with Kotlin, Spring, high-performance APIs, code reviews, software engineering best practices, test-driven development, and full development lifecycle ownership.
Gen DigitalNasdaq: GEN: Provides cybersecurity, identity, privacy, and financial wellness.
4+ YOESenior backend engineer with 4+ years of experience, strong Python/Django or similar OOP experience, relational and non-relational databases, RESTful APIs, and containerization (Docker/Kubernetes).
Astra: Fintech payments infrastructure providing APIs and automation for businesses to move money instantly across payment rails.
5+ YOE5+ years building production backend systems, strong systems engineering, Python experience, distributed systems and microservices, Google Cloud Platform familiarity, BS in CS/Engineering required, MS preferred.
Oxbridge Health: Episode-based health insurance for self-funded employers, providing guaranteed prices and broad provider choice.
7+ YOERequires 7+ years of backend engineering experience, expert AWS serverless and Python skills, distributed systems expertise, REST API development, databases, CI/CD, and technical leadership.
Moonshot: Private U.S. fintech operating a mobile app that lets users discover, buy, and sell memecoins.
5+ YOE5+ years backend/platform engineering experience building high-scale, highly available systems; deep expertise in auth, financial systems, or blockchain infrastructure; strong distributed-systems and operational skills.
Flutter, React Native, React, Go, Rust, Solana, Google Cloud, Amazon Web Services
Polymarket: Private blockchain-based prediction market platform where users trade on outcomes of real-world events.
Backend engineer experienced building detection, monitoring, and case-management systems for AML/KYC/sanctions; integrating surveillance platforms; modeling and reconciling financial data; partnering with Compliance and Risk.
Slang AI: Voice-AI phone concierge for full-service restaurants, answering calls, booking reservations, and routing requests.
5+ YOE5+ years backend experience, strong OO fundamentals, experience with REST/GraphQL, containerization and cloud (GCP), observability, and mentoring other engineers; Kotlin and telephony/voice AI experience preferred.
Commit: Provides custom software, IT, cloud, and cybersecurity services.
5+ YOEBachelor's in CS or related, 5+ years backend experience, production-grade systems, proficiency in Node.js, SQL and NoSQL, familiarity with cloud platforms and microservices.
Taxwire: Private sales-tax and VAT compliance platform and managed service for finance teams.
5+ YOE5–10+ years backend engineering experience; strong backend systems, data modeling, and compliance logic; proficiency with Python (FastAPI, Pydantic, pandas, duckdb), Postgres/SQL, and AWS; strong communication and ownership.
AuroraNASDAQ: AUR: A self-driving technology developing autonomous freight, ride-hailing, and local-delivery systems for transportation businesses.
5+ YOE5+ years building production backend systems; strong Python and Django experience; SQL, Celery, GCP and Terraform familiarity; experience with LLMs, RAG pipelines, observability, and production operations.
deCircle: Boutique recruitment partner for high-tech and Web3 organizations.
5+ YOE5+ years backend development in Python; async programming; deep PostgreSQL; multi-tenant data isolation; Redis; OpenTelemetry; AWS; strong system design and collaboration.
Madrid or Paris or Seattle or London or Berlin or San Francisco or New York City or Sydney or Mexico City
HybridFull Time
Aircall: Private B2B SaaS providing AI-powered cloud communications software for business sales and support teams.
6+ YOE6+ years backend development with a typed language (TypeScript preferred), production AWS experience, infrastructure-as-code (CloudFormation or Terraform), security-first mindset, serverless experience, GraphQL a plus, on-call rotation and mentoring experience.
Linero: AI-native software building operational infrastructure for AI labs, defense primes, and semiconductor giants.
5+ YOE5+ years backend engineering; systems design; Python/Go/Java; API design; distributed systems; multi-tenant data isolation; security; NYC relocation.
Commure: AI-native healthcare technology providing revenue-cycle, clinical-workflow, and ambient-AI software to health systems and providers.
Professional software development experience; strong backend skills with Python and web frameworks; experience with containers and cloud (Docker, Kubernetes); production systems, alerting, metrics, and SRE practices; leadership and customer-facing experience.
Cassi: AI property-management software that coordinates tasks, routines, calendars, teams, and vendors for residential property managers.
5+ YOE5+ years of professional full-stack experience; TypeScript across stack; backend depth with DDD/event-driven patterns; DB fluency (NoSQL and SQL); REST API design with OpenAPI; payments/billing experience; ability to ship quickly with quality.
Wheely: Private British luxury chauffeur and concierge service serving discerning travellers through an app.
3+ YOE3+ years building scalable backend services; 5+ years for senior candidates. Engineering fundamentals and relational/NoSQL database experience required; Go or another strong programming language accepted.
Vibe: Self-serve connected TV advertising platform helping ecommerce brands, growth-stage businesses, and SMBs run measurable streaming TV campaigns.
6+ YOE6+ years building production backend systems; deep proficiency in TypeScript and Python; strong AWS and Terraform experience; familiarity with APIs, data pipelines, and mentoring engineers.
United States or Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago
$163k-$264k/yrRemoteFull Time
LaunchDarkly: B2B feature-management software helping engineering teams safely manage code releases and AI agents in production.
6+ YOERequires 6+ years of software engineering experience, backend production systems expertise, Go or comparable language skills, distributed systems and data-intensive product experience, cloud operations, and observability practices.
Alpaca Health: Tech-enabled management services organization for autism care providers.
Senior backend engineer with strong system-design and ownership; builds integrations, billing/payments, data pipelines, and AI/LLM infrastructure. Experience in operationally complex domains (healthcare, fintech, insurance) or early-stage startups preferred.