290 backend software engineer jobs at 161 companies in Lockport, NY

PromotedHiringCafe
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
PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1mo
Save
Mark Applied
Hide
Backend Software Engineer
Toronto, Ontario, Canada
$118k-$158k/yr OnsiteFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
5+ YOEBS in CS/EE (or equivalent) with 5+ years experience (masters/PhD experience tradeoffs), strong CS fundamentals, proficiency with Java/Kotlin/Python, backend and API development, SQL/GraphQL knowledge, testing and Agile practices.
Java, Kotlin, Python, GraphQL, SQL, RESTful APIs, Claude Code, GitHub Copilot, Cursor
1mo
Save
Mark Applied
Hide
Software Engineer (Backend), Content Foundations
San Francisco or Atlanta or Austin or Boston or Chicago or Dallas or Denver or Houston or Jacksonville or Los Angeles or Mexico City or Miami or New York City or Ottawa or Phoenix or Portland or Sacramento or Salt Lake City or San Diego or Seattle or Toronto or Vancouver or Washington, D.C.
$104k-$187k/yr HybridFull Time
Scribd
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
4+ YOE4+ years as a software engineer; backend/data pipelines; comfortable with messy data; proficient in Ruby, Python, or Go; AWS experience; SQL; collaborative and communicative.
Ruby, Python, Go, AWS, S3, SQS, SNS, SQL
1mo
Save
Mark Applied
Hide
Senior Software Engineer, Backend
Toronto, Ontario, Canada
HybridFull Time
Harvey
Harvey: AI platform for legal research and document analysis.
4+ YOE4+ years post-BS/MS backend software engineering experience; strong distributed systems, REST/gRPC, database and CS fundamentals; experience building platform infrastructure and enterprise features; attention to security and privacy.
REST, gRPC
3mo
Save
Mark Applied
Hide
Software Engineer, Backend (All Levels)
Toronto, Ontario, Canada
HybridFull Time
Zip
Zip: AI-powered intake-to-procure platform for enterprise spend management
3+ YOE3+ years software engineering; BS or higher in CS or related field; web app and API development; Python, Javascript, React, GraphQL; Kubernetes, Spinnaker, Jenkins, Kibana, Prometheus, Grafana; quick learner of new frameworks; startup environment and API integrations a bonus; AI/ML interest a bonus.
Python, Javascript, React, GraphQL, Kubernetes, Spinnaker, Jenkins, Kibana, Prometheus, Grafana
2w
Save
Mark Applied
Hide
Software Engineer, Backend - Unified Gateway
Toronto, Ontario, Canada
$120k-$150k/yr OnsiteFull Time
DoorDash
DoorDashNASDAQ: DASH: Platform for on-demand delivery of food and local goods.
2+ YOE2+ years backend/platform engineering; experience with gRPC, REST, Protocol Buffers, Kotlin (or JVM), distributed systems, API gateway concepts, and high-throughput production systems.
gRPC, Protocol Buffers, Kotlin, Vert.x, OpenAPI, Claude Code, Codex, Cursor
2w
Save
Mark Applied
Hide
Backend Engineer
Toronto or Canada
$85k-$105k/yr RemoteFull Time
Xello
Xello: Provides software for student career exploration and college readiness.
3+ YOE3+ years backend experience, strong SQL and C#, .NET/.NET Core, data modeling, API development, performance tuning, and TDD; experience with large-scale systems.
.Net Framework, .NET, .NET Core, C#, SQL Server, SQL, REST, APIs, GIT, Angular, Azure
1mo
Save
Mark Applied
Hide
Staff Backend Engineer
Toronto or Canada
$175k-$200k/yr HybridFull Time
Bettermode
Bettermode: Builds branded online community platforms for customer engagement.
Deep TypeScript and backend expertise with NestJS, event-driven systems (Kafka), PostgreSQL/MongoDB, AI/LLM integration experience, product-minded building, and ability to mentor engineers.
TypeScript, NestJS, Kafka, PostgreSQL, MongoDB, Claude Code, Cursor, LLMs
2mo
Save
Mark Applied
Hide
Lead Backend Developer
Toronto, Ontario, Canada
$147k-$192k/yr OnsiteFull Time
Movable Ink
Movable Ink: Provides AI-powered content personalization for digital marketing campaigns.
7+ YOE7+ years in software engineering; distributed, event-driven backends; cloud experience; strong architectural judgment; leadership and mentoring; focus on reliability and observability.
Google Cloud Platform, Event-driven architecture, Pub/Sub, Monitoring and observability, Distributed systems
1mo
Save
Mark Applied
Hide
Member of Technical Staff - Backend Software Engineer
Toronto, Ontario, Canada
$100k-$300k/yr OnsiteFull Time
Viggle
Viggle: AI platform for controllable video generation and character animation.
3+ YOE3+ years backend experience; proficiency in Go or Python; experience with distributed systems, message queues, containerization (Docker, Kubernetes), and building scalable APIs and GPU processing pipelines.
Go, Gin, GORM, Python, FastAPI, asyncio, aiohttp, Redis, RabbitMQ, Temporal, NATS, Kafka, Docker, Kubernetes, CI/CD, PyTorch, TensorRT, Triton, FFmpeg, OpenCV, fMP4, HLS, PTS, Stripe, Airflow
1w
Save
Mark Applied
Hide
Senior Backend Engineer, Growth & Agents
Toronto, Ontario, Canada
$160k-$215k/yr HybridFull Time
EvenUp
EvenUp: AI-powered document generation and analysis for personal injury law.
5+ YOE5+ years software engineering experience; strong track record shipping production backend systems; experience with TypeScript and/or Python; experience building AI-powered or communication platforms is a plus.
TypeScript, Python
4d
Save
Mark Applied
Hide
Backend Engineer III
Toronto, Ontario, Canada
$105k-$125k/yr HybridFull Time
Fulfillment IQ
Fulfillment IQ: Offers supply chain consulting and logistics technology solutions.
4+ YOE4+ years building backend services and APIs with strong Python, REST API design, relational databases, ORMs, testing, and production-grade performance and reliability.
Python, FastAPI, Flask, Django, PostgreSQL, SQLAlchemy, Alembic, Docker, CI/CD, LLM, RAG
1mo
Save
Mark Applied
Hide
Senior Backend Engineer - Payroll - Toronto
Toronto or Canada
$148k-$189k/yr OnsiteFull Time
HiBob
HiBob: HR software platform for managing employee lifecycle and engagement.
6+ YOE6+ years backend software engineering for SaaS, located in Toronto metro; experience with Java/Kotlin/Scala, AWS, PostgreSQL/MySQL, testing methodologies; shipped customer-facing features.
Java, Kotlin, Scala, AWS, PostgreSQL, MySQL
2w
Save
Mark Applied
Hide
Intermediate Backend Engineer
Toronto, Ontario, Canada
$80k-$89k/yr HybridFull Time
Lush
Lush: Manufacturer and retailer of fresh handmade cosmetic products
Python-first backend developer with web framework, GraphQL, SQL, git, and deployment experience; able to build and maintain scalable APIs and integrate third-party systems.
Python, TypeScript, SQL, git, FastAPI, Django, Flask, Strawberry, Ariadne, Saleor, ERPNext, Microsoft Power BI, CloudSQL, pip, uv, venv, pyproject.toml, Docker
3mo
Save
Mark Applied
Hide
Senior Backend Engineer
Toronto, Ontario, Canada
$130k-$174k/yr HybridFull Time
Meltwater
Meltwater: Global media intelligence and social analytics platform for businesses.
Backend engineering with MongoDB, GraphQL, Node.js/TypeScript, Python; AWS serverless; data pipelines; observability; scale.
Node.js, TypeScript, Python, GraphQL, MongoDB, Atlas Search, Vector Search, AWS, Terraform, CI/CD, GitHub Actions
2mo
Save
Mark Applied
Hide
Senior Backend Engineer (SaaS, Data & AI)
Toronto, Ontario, Canada
RemoteFull Time
Kaseya
Kaseya: Develops IT management and security software for service providers.
10+ YOE10+ years software engineering; backend SaaS experience; API/services; cloud platforms; data/AI integration
Node.js, Java, Go, Python, AWS, GCP, Azure, REST, GraphQL, gRPC, containers, distributed systems, pandas, ML frameworks
2w
Save
Mark Applied
Hide
Senior Backend Engineer
Toronto, Ontario, Canada
OnsiteFull Time
Venn
Venn: Digital banking and financial management platform for Canadian businesses.
6+ YOE5+ years Java, 6+ years backend development, experience building and scaling production-ready financial products, strong communication and organizational skills, startup/fintech experience preferred.
Java
1mo
Save
Mark Applied
Hide
Senior Backend Engineer - Payroll - Toronto
Toronto, Ontario, Canada
$148k-$189k/yr OnsiteFull Time
HiBob
HiBob: Provides a cloud-based human resources management platform for businesses.
6+ YOEMust be located in the Toronto metro area; 6+ years backend SaaS engineering experience; strong software design skills; experience with Java/Kotlin/Scala, AWS, and relational databases; testing and delivery experience.
Kotlin, Scala, Java, AWS, PostgreSQL, MySQL
1w
Save
Mark Applied
Hide
Staff Backend Developer
Toronto, Ontario, Canada
$145k-$191k/yr HybridFull Time
Varicent
Varicent: SaaS platform for sales performance and incentive compensation management.
6+ YOE6+ years software engineering experience, strong system design, hands-on Python/TypeScript, cloud (AWS/GCP/Azure), CI/CD, automated testing, observability, and experience shipping production distributed systems.
Python, TypeScript, AWS, GCP, Azure, CI/CD
1mo
Save
Mark Applied
Hide
Staff Backend Engineer
Toronto, Ontario, Canada
$150k-$160k/yr HybridFull Time
HelloFresh
HelloFreshFrankfurt Stock Exchange: HFG: Global meal kit delivery service and food solutions provider.
Strong experience designing scalable microservices and distributed systems; hands-on with Docker, Kubernetes, CI/CD, relational and document databases; production backend development in Golang, Python, or Java; experience integrating AI/LLM workflows preferred.
Kafka, RabbitMQ, Docker, Kubernetes, CI/CD, PostgreSQL, MySQL, MongoDB, LLM, Golang, Python, Java
1mo
Save
Mark Applied
Hide
Senior Backend Engineer - Payroll - Toronto
Toronto or New York City or Canada
$148k-$189k/yr OnsiteFull Time
HiBob
HiBob: Cloud-based human resources management platform for mid-sized businesses.
6+ YOE6+ years backend software engineering for SaaS; located in Toronto metro; experience shipping customer-facing features; Java/Kotlin/Scala; testing methodologies (unit testing, TDD); AWS; relational databases (PostgreSQL, MySQL).
Java, Kotlin, Scala, AWS, PostgreSQL, MySQL, TDD