331 back end developer jobs at 184 companies in Yorktown Heights, NY

2mo
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Senior Backend Developer
Yerevan or New York City or Israel or Ukraine or Armenia
RemoteFull Time
Commit
Commit: Provides custom software, IT, cloud, and cybersecurity services.
5+ YOE5+ years backend development (Python, JavaScript), building and operating production SaaS services, designing scalable architectures and data pipelines, driving projects end-to-end, and using AI/LLMs in development workflows.
Python, JavaScript, AI/LLMs, GenAI, Active ASPM
2mo
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Backend Engineer
New York, New York, United States
RemoteFull Time
Themis
Themis: Private SaaS provider of collaborative governance, risk, and compliance software for banks, credit unions, and fintechs.
Experience building production applications with Ruby on Rails, PostgreSQL, and Redis; background job and API design experience; strong testing, security, reliability, and communication skills; ability to own backend systems end-to-end.
Ruby on Rails, PostgreSQL, Redis, AWS, GCP, Azure
1mo
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Backend Engineer
New York, New York, United States
HybridFull Time
Chariot
Chariot: US fintech helping nonprofits receive and process donor-advised fund gifts and grant payments.
4+ YOE4+ years software development experience, 2+ years backend development, proficiency with Go, Node, Docker, Terraform, Kubernetes, Postgres, REST and gRPC; bachelor’s in a technical field preferred.
Go, Node, Docker, Terraform, Kubernetes, Postgres, REST APIs, gRPC, AWS
1w
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Backend Engineer
London or New York City or Paris
HybridFull Time
SeedLegals
SeedLegals: Private UK legal-technology platform that automates fundraising, cap-table, and business legal documents for startups and small businesses.
Mid-level backend engineering role requiring Kotlin and Spring experience, high-performance API development, software engineering best practices, test-driven development, code review, and full lifecycle ownership.
Kotlin, Spring, Claude, LLMs, JVM, APIs
1mo
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Backend Engineer
New York, New York, United States
$162k/yr HybridFull Time
Slang AI
Slang AI: Voice-AI phone concierge for full-service restaurants, answering calls, booking reservations, and routing requests.
3+ YOE3-5 years backend experience; strong JVM skills (Kotlin/Java/Scala); GraphQL, NoSQL/Firestore, Docker, GCP, Terraform; experience with Twilio/Dialogflow; test-driven development and debugging skills.
Kotlin, Java, Scala, GraphQL, Twilio, Dialogflow, React, TypeScript, Firestore, Docker, Google Cloud Platform, Cloud Functions, Pub/Sub, Terraform, Slack, GitHub
1w
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Backend Engineer
Denver or Seattle or Washington or San Francisco or Los Angeles or Arvada or San Francisco or Nashville or Denver or Santa Fe or New Orleans or San Diego or Bozeman or New York City
$120k-$180k/yr HybridFull Time
Quindar
Quindar: Automation First. Mission Ready. Mission management software delivering a common operating picture, system-of-systems integration, and resiliency across commercial and government space missions.
3+ YOERequires Python backend development, AWS, GraphQL, Docker, Terraform, APIs, Kubernetes, Git, a computer science bachelor's degree, and 3+ years of experience; U.S. person status and security clearance eligibility required.
Python, AWS, GraphQL, Docker, Terraform, OpenAI, Anthropic, AskSage, Kubernetes, AWS Lambda, Amazon ECS, Amazon EKS, Amazon CloudWatch, Amazon S3, Amazon EFS, Amazon EBS, Amazon EC2, Amazon RDS, Git, GitHub, GitLab, CI/CD
3mo
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Senior/Staff Backend Engineer
New York or San Francisco
$170k-$220k/yr HybridFull Time
Casap
Casap: Agentic AI dispute-management platform that automates disputes and reduces fraud for banks, credit unions, and fintechs.
6+ YOE6+ years in software development; at least 2 years with Go or Java in production; platform team/API/background services; end-to-end feature ownership; strong problem-solving and data structures knowledge; mentoring and technical leadership; strong communication.
Go, Java, CI/CD, microservices, backend development
2w
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Back-End Developer
Poughkeepsie, New York, United States
$168k-$193k/yr OnsiteFull Time
IBM
IBMNYSE: IBM: Global technology and consulting focusing on cloud and AI.
1+ YOEMaster’s degree in engineering, programming, computer science, or related field plus 1 year of hardware development experience; alternatively, a bachelor’s degree plus 5 years’ progressive experience. Requires named programming tools.
Assembler, C, C++, Python, Shell, GitHub, Visual Studio Code
1mo
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Senior Backend Engineer (Go)
Casablanca or Palma de Mallorca or Europe or London or New York City or San Francisco or Africa
HybridFull Time
Nuitée
Nuitée: Irish travel-technology platform providing hotel-distribution APIs and booking infrastructure for airlines, banks, OTAs, and travel companies.
Strong hands-on Go experience, history integrating third-party APIs, ownership of end-to-end integrations, and ability to work at high scale and low process.
Go
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Backend Engineer
New York, New York, United States
RemotePart Time
Qureos
Qureos: AI-powered recruitment platform connecting talent with employers.
Proficiency in Python, Java, Node.js, or Ruby; web frameworks and RESTful APIs; SQL and NoSQL databases; cloud platforms; problem-solving and communication skills.
Python, Java, Node.js, Ruby, RESTful API, SQL, NoSQL, AWS, Google Cloud, Azure, Agile, Git, Docker, CI/CD
1mo
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Backend Engineer
San Francisco or New York City or Austin or Seattle
$175k-$300k/yr OnsiteFull Time
Fluidstack
Fluidstack: Building and operating civilization-scale data center infrastructure for AI.
Experience building production services, observability, API and control-plane design, API-first infrastructure, incident response/pager duty, and familiarity with AI tooling and distributed systems.
LLM APIs, MCP servers, Claude Code, Cursor, Prometheus, Thanos, VictoriaMetrics, Temporal, Cadence, BMC/Redfish, Go, Python, Postgres, Kubernetes
1mo
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Backend Engineer
New York City, New York, United States
$125k-$165k/yr OnsiteFull Time
Discernis
Discernis: AI-native legal intelligence software for law firms and legal teams, automating document review and investigations.
Professional Python backend experience; familiarity with Flask, relational databases, background processing, and search systems; focus on reliability, performance, and secure design.
Python 3.11, Flask, SQLAlchemy, PostgreSQL, Elasticsearch, OpenSearch, Redis, Docker, Celery
2w
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Backend Engineer
New York City, New York, United States
OnsiteFull Time
Portra
Portra: Insurance infrastructure providing rules-driven quote-bind-issue systems for carriers, MGAs, brokers, and program administrators.
2+ YOERequires 2+ years building production backend systems, a master's degree or equivalent experience, Python, SQL and NoSQL, cloud deployment, Docker, Kubernetes, APIs, and CI/CD experience.
Python, AWS, GCP, Docker, Kubernetes, SQL, NoSQL, CI/CD, Flask
2mo
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Backend Engineer
Giv'atayim or Tel Aviv or New York City or London or Singapore or São Paulo
HybridFull Time
Personetics
Personetics: AI-powered financial personalization and engagement platform serving banks and other financial institutions.
5+ YOE5+ years backend/platform engineering experience, 5+ years with Java, Kubernetes experience, SQL and relational DB knowledge, Python familiarity, leadership and platform design experience, practical experience with AI dev tools (e.g., Cursor).
Java, Python, Kubernetes, SQL, Cursor, CI/CD, Azure, AWS
1w
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Backend Engineer
Los Angeles or Beverly Hills or New York City
$145k-$180k/yr HybridFull Time
Genius
Genius: US digital music-media platform where artists, contributors, and fans annotate lyrics and explore music knowledge.
4+ YOEAt least 4 years of backend or data engineering experience; proficiency in Ruby on Rails, databases, ELT pipelines, Apache Airflow, APIs, and scalable systems. Computer Science degree preferred, not required.
Ruby on Rails, PostgreSQL, ClickHouse, BigQuery, Apache Airflow
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Founding Backend Engineer
New York City, New York, United States
OnsiteFull Time
Hera
Hera: Private Medicare-covered care-management coordinating care for older adults and their families.
Experienced backend engineer with strong systems design, cloud and database experience, API and SDK development, security/compliance awareness, and ownership in early-stage environments.
AWS, SQL, APIs, SDKs
1d
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Staff Backend Engineer
New York City, New York, United States
$350k-$500k/yr OnsiteFull Time
FOMO Labs
FOMO Labs: Private fintech operating a social-first crypto trading app for consumers on web and mobile.
6+ YOEStaff-level engineer with 6+ years of experience, autonomous execution skills, and crypto development experience; Solana or EVM experience preferred. React experience and personal crypto trading are pluses.
TypeScript, Go, Rust, Solana, EVM, React
4d
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Staff Backend Engineer
New York City or Montreal
$230k-$280k/yr HybridFull Time
Tetrix
Tetrix: AI investment intelligence platform for institutional investors in private markets.
10+ YOERequires 10+ years of backend engineering experience using Python, strong technical leadership, complex system architecture, engineer mentoring, and best-practice development in fast-paced environments.
Python
2w
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Senior Backend Engineer
Norwalk, Connecticut, United States
OnsiteFull Time
Oxbridge Health
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.
AWS, AWS Lambda, Amazon API Gateway, Amazon SQS, Amazon SNS, Amazon DynamoDB, AWS Step Functions, Amazon EventBridge, Apache Kafka, Python, PostgreSQL, Amazon RDS, GitHub Actions, HIPAA, RESTful APIs, TDD, IaC, CI/CD
4w
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Backend Engineer, Markets
New York, New York, United States
OnsiteFull Time
Polymarket
Polymarket: Private blockchain-based prediction market platform where users trade on outcomes of real-world events.
1+ YOE1+ years backend experience, proficiency in TypeScript/Python/Go, third-party API integration, Linux and cloud tooling comfort, experience shipping production code; AI-assisted development familiarity preferred.
TypeScript, Python, Go, Claude Code, Codex, Cursor, Linux, Kafka, RabbitMQ