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1,041 backend engineer jobs at 507 companies in Fairfield, CT

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Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
Node.js, Python, Elasticsearch, Redis
Help us #BeatIndeed & #BeatLinkedIn
3w
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Backend Engineer
Ramat Gan or Tel Aviv-Yafo or New York City or London or Lisbon
HybridFull Time
Shield
Shield: Compliance platform for monitoring employee digital communications in finance.
3+ YOE3+ years backend experience, 1+ year Java, experience with multiple backend languages, two or more data stores, event-driven architecture and message brokers, cloud (AWS/GCP/Azure) experience, and frequent use of AI tools.
Java, Go, Python, C#, TypeScript, MySQL, PostgreSQL, MongoDB, Elasticsearch, Redis, Kafka, RabbitMQ, AWS, GCP, Azure
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1mo
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Backend Engineer
New York, New York, United States
$110k-$140k/yr HybridFull Time
Bayview Asset Management
Bayview Asset Management: Investment management firm specializing in credit and mortgage assets.
Bachelor's degree in Computer Science or equivalent experience; strong backend development skills in .NET and Python; experience with databases and CI/CD.
NET (C#, EF Core, ASP.NET Core), Python (FastAPI, Pydantic, SQLAlchemy), SQL Server, Snowflake, Redis, Bitbucket, Jenkins, Docker, Kubernetes, VS Code
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6d
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Sr Backend Engineer
San Francisco or New York
$167k-$219k/yr HybridFull Time
Quizlet
Quizlet: Digital learning platform providing study tools and flashcards.
4+ YOE4+ years backend or data engineering experience; strong SQL and data warehouse experience; proficiency in Python/Java/Scala; Elasticsearch/OpenSearch experience; experience building production data pipelines and backend services.
Elasticsearch, OpenSearch, SQL, Snowflake, BigQuery, Redshift, Python, Java, Scala, Airflow, Dagster, Prefect, dbt, REST, gRPC, Datadog, Prometheus, Grafana, Docker, Kubernetes, AWS, GCP, Azure, Spark, Kafka, Flink, FAISS, ScaNN, pgvector, LightGBM, XGBoost, BM25, HNSW, kNN
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3mo
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Staff Backend Engineer (Python)
New York City or Montreal
$240k-$280k/yr HybridFull Time
Tetrix
Tetrix: AI-powered financial data platform.
10+ YOE10+ years backend engineering in Python; strong leadership; scalable systems design; API and data ingestion experience; AI integrations a plus.
Python, APIs, Data Ingestion, Event-Driven Architecture, Cloud
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3mo
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Backend Engineer
New York, New York, United States
$160k-$215k/yr OnsiteFull Time
Treeswift
Treeswift: Provides AI-augmented vegetation management and asset monitoring for utilities.
7+ YOE7+ years backend engineering experience; Python/Django or similar; PostgreSQL with geospatial queries; Docker, Kubernetes, AWS; OAuth2/OIDC/JWT; strong cross-functional communication.
Python, Django, PostgreSQL, PostGIS, Kubernetes, AWS, Docker, OpenAPI, Terraform, OpenTofu, CI/CD
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2mo
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Backend Engineer
New York City, New York, United States
$140k-$190k/yr OnsiteFull Time
Sheer Health
Sheer Health: A New York City-based delivering healthcare experiences through technology and data analytics.
3+ YOE3+ years full-stack software engineering; strong NodeJS; Go/Java backend; web tech; browser automation with Playwright/Puppeteer; in-office NYC Mon-Thu; strong problem-solving and communication.
NodeJS, Go, Java, JavaScript, TypeScript, HTML, CSS, Playwright, Puppeteer
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2w
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Senior Backend Engineer - Advertising
New York, New York, United States
$164k-$235k/yr RemoteFull Time
Spotify
SpotifyNYSE: SPOT: Digital music, podcast, and video streaming service.
4+ YOE4+ years backend engineering experience, strong Java (Scala preferred), experience building low-latency high-throughput distributed systems, system design and algorithms, EMR not mentioned, strong communication and data-driven mindset.
Java, Scala
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1mo
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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 personalized banking and financial guidance platform.
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
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1mo
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Backend/Infra Engineer
New York, New York, United States
OnsiteFull Time
Ostium
Ostium: Enables on-chain trading of stocks, commodities, and crypto assets.
3+ YOEMid-level infra/backend engineer with Kubernetes, Terraform, ArgoCD, GitHub Actions, Docker, Dagster, Prometheus, Grafana, Golang, Postgres, Clickhouse; strong IaC, security, networking, and migration experience.
Kubernetes, Terraform, ArgoCD, GitHub Actions, Docker, Dagster, Prometheus, Grafana, Golang, Postgres, Clickhouse
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2w
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TypeScript Backend Engineer
Tokyo or New York City or Singapore
RemoteFull Time
Startale
Startale: Builds blockchain infrastructure and applications for mass adoption.
Senior backend engineer with extensive production experience building scalable TypeScript backend systems, PostgreSQL expertise, Web3 integrations, and operating high-traffic distributed services.
TypeScript, NestJS, Fastify, Express, PostgreSQL, Go, Kafka, NATS, RabbitMQ, The Graph, Subsquid, Docker
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2mo
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Staff Backend Engineer
New York City, New York, United States
$210k-$280k/yr HybridFull Time
TriEdge Investments
TriEdge Investments: Private investment firm developing AI-driven technology for healthcare companies.
Design and build scalable backend systems; collaborate with clinical/technical teams; maintain high engineering standards and observable, maintainable code; work with EHRs and data pipelines.
Backend frameworks, APIs, Data processing, Databases
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3mo
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Backend Engineer, Foundations
New York City, New York, United States
OnsiteFull Time
Equall
Equall: Platform that turns unstructured legal documents into structured, auditable ground truth.
Backend engineer with production experience, Python/Go/Rust, API design, data pipelines, and Kubernetes.
Python, Go, Rust, Zig, Prefect, Neo4j, Postgres, Redis, Kubernetes
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1w
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Backend Engineer
New York, New York, United States
HybridFull Time
Chariot
Chariot: Payment infrastructure for charitable giving and Donor Advised Funds.
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
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4w
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Backend Engineer
New York, New York, United States
RemoteFull Time
Themis
Themis: Provides a compliance collaboration platform for financial institutions.
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
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1mo
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Senior Backend Engineer
New York or United States
RemoteFull Time
Astra
Astra: Develops APIs for automated and real-time bank transfers.
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.
Python, Google Cloud Platform, SQL, NoSQL
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3w
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Founding Backend Engineer
New York City, New York, United States
OnsiteFull Time
Hera
Hera: Medicare-covered platform providing dedicated senior care coordination.
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
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18h
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Staff Backend Engineer
New York City or San Francisco
$250k-$300k/yr OnsiteFull Time
Town
Town: AI-powered productivity assistant that automates workplace workflows.
Experienced backend engineer with production experience scaling distributed systems, LLM/agent infrastructure, workflow orchestration, and defining technical direction in fast-moving startups.
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1mo
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Backend Engineer - New York, NY
New York, New York, United States
$145k-$183k/yr OnsiteFull Time
Atoms
Atoms: Building robotics and software to automate physical world industries.
2+ YOE2+ years software engineering experience; strong backend system design, APIs, data stores, and distributed systems; experience leading cross-team initiatives; hands-on coding in Java and Go; collaboration and mentoring skills.
Java, Go
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1mo
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Sr. Backend Engineer, Infrastructure team
New York, New York, United States
$150k-$200k/yr OnsiteFull Time
Pinwheel
Pinwheel: API for payroll connectivity and income data verification.
3+ YOE3+ years backend engineering and 2+ years platform/infrastructure experience; strong Python and/or Go; Kubernetes, cloud (AWS/Azure/GCP), Terraform, Helm, GitOps, CI/CD, and observability experience; security and PKI familiarity.
Go, Python, Kubernetes, Terraform, Helm, Flux, ArgoCD, CircleCI, GitHub Actions, Datadog, Prometheus, Grafana, AWS, Azure, GCP, Public Key Infrastructure (PKI), mTLS, MCP servers, GitOps
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4w
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Backend Engineer - Applied AI
New York City, New York, United States
$175k-$240k/yr OnsiteFull Time
FLORA
FLORA: AI-powered infinite canvas for professional creative workflows.
3+ YOE3+ years backend infrastructure or distributed systems experience; building execution layers/state machines; diagnosing and fixing database bottlenecks (caching, query tuning, schema); managing multi-modal state/streaming for text, image, and video; TypeScript and serverless/edge familiarity.
TypeScript, Convex, Liveblocks, Vercel Workflow, CRDT
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