Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
Niagara Falls • 50 milesRemote · Hybrid · Onsite · Field · All Environments
96 principal software engineer jobs at 57 companies in Niagara Falls, NY
3mo
Save
Mark Applied
Hide
Principal Software Engineer - Python
Toronto, Ontario, Canada
$180k-$275k/yr RemoteFull Time
12+ YOESeasoned software engineer with 12+ years, Python, enterprise SaaS, open source tools, leadership, mentoring, strong English.
Python, Git, FastAPI, Pydantic
1mo
Save
Mark Applied
Hide
Principal Software Engineer
Toronto or Canada
$180k-$220k/yr RemoteFull Time
15+ YOE15+ years software engineering experience with 5+ years at staff/principal level; deep expertise in C#/.NET, TypeScript, Angular, SQL, Redis, Microsoft Azure; experience applying AI to engineering workflows and leading technical strategy.
C#, .NET, TypeScript, Angular, SQL, Redis, Microsoft Azure, CI/CD
2mo
Save
Mark Applied
Hide
Principal Software Developer
Montreal or Toronto
RemoteFull Time
15+ YOE15+ years software development, 5+ years technical leadership, 2+ years architecture across large teams, cloud experience, multi-stack, strong communication, English fluency.
Go, PHP, Java, Ruby on Rails, Python, Cloud
1mo
Save
Mark Applied
Hide
Principal Software Engineer - PA058
Toronto, Ontario, Canada
OnsiteFull Time
12+ YOE12+ years backend/platform/infrastructure experience; strong Go and TypeScript skills; experience with GitOps/ArgoCD, Helm, Kubernetes, cloud providers (GCP/AWS), durable workflows/Temporal, and platform/tooling ownership.
TypeScript, Node, NestJS, ArgoCD, Helm, Cloud Run, Nx, Go, Temporal, Kubernetes (K8s), GCP, AWS, Terraform, Cloud Functions, Dataflow, Lambda, Istio, Agentic AI, MCP (Model Context Protocol), A2A (Agent-to-Agent)
2mo
Save
Mark Applied
Hide
Principal Software Engineer - Authorization Platform
Mississauga, Ontario, Canada
$156k-$174k/yr HybridFull Time
Lead engineer for authorization platform; strong Java/Python, cloud-native, REST/microservices, React, CI/CD, observability, HIPAA awareness.
Java, Spring Boot, Python, React, REST, Microservices, CI/CD, GitHub Actions, Jenkins, Azure, AKS, Terraform, PostgreSQL, MSSQL, Redis, SAML, OAuth, OpenID Connect, Selenium, Cypress, RestAssured, New Relic, DataDog, Git
2w
Save
Mark Applied
Hide
Principal Software Engineer
Toronto or Dallas
$139k-$265k/yr HybridFull Time
10+ YOERequires 10+ years of enterprise software engineering experience, 8+ years with Salesforce and marketing technology, advanced Salesforce development and Data Cloud expertise, and specified Salesforce certifications.
Salesforce Sales Cloud, Marketing Cloud, MCAE, MCA, Salesforce Data Cloud, Qualtrics, 6sense, Openprise, AEM, Pardot, Email Studio, Journey Builder, Automation Studio, Contact Builder, Agentforce, Apex, Lightning Web Components, Flows, REST, SOAP, SFDX, Git, CRM Analytics, Tableau
2w
Save
Mark Applied
Hide
Principal Software Engineer
Toronto or Dallas
$139k-$209k/yr HybridFull Time
10+ YOE10+ years enterprise software engineering with 8+ years on Salesforce/marketing technology; expertise in Salesforce, Marketing Cloud/Pardot, Data Cloud, integrations, Apex, LWC, and CI/CD.
Salesforce, Pardot, MCAE, Marketing Cloud, Marketing Cloud Advanced, Data Cloud, Adobe AEM, Qualtrics, 6sense, Openprise, Agentforce, Apex, Lightning Web Components, Flows, REST, SOAP, SFDX, Git, Tableau
2w
Save
Mark Applied
Hide
Principal Software Engineer
Toronto or Toronto
$135k-$165k/yr HybridFull Time
10+ YOE10+ years software engineering experience, strong TypeScript with React/React Native, daily use of AI developer tools (Cursor or Claude), experience leading solution design and architecture for complex systems.
Cursor, Claude, TypeScript, React, React Native, Angular, C#, .NET Core, WebSockets, gRPC, Firebase, Google Cloud Platform (GCP), BigQuery, Bigtable
2mo
Save
Mark Applied
Hide
Principal Software Engineer
Toronto or California or Colorado or Illinois or New York or Washington or New York City
$184k-$276k/yr RemoteFull Time
8+ YOE8+ years software engineering experience (3+ years senior/staff leadership), proven large-scale distributed systems design, microservices/event-driven expertise, proficiency in Java/Kotlin/Go, cloud infrastructure experience preferred, BS in CS or equivalent.
Java, Kotlin, Go, AWS, GCP, Azure
3mo
Save
Mark Applied
Hide
Principal Full-Stack Software Engineer
Toronto, Ontario, Canada
$146k-$183k/yr HybridFull Time
7+ YOE7+ years in software/platform engineering/architecture; strong Python (FastAPI), JavaScript/TypeScript (ReactJS); API design; DB design and SQL; cloud (Azure/AWS/GCP); leadership in enablement; internal developer platforms; experience with SonarCloud/LinearB/Datadog preferred.
Python, FastAPI, JavaScript, TypeScript, ReactJS, SQL, Datadog, SonarCloud, LinearB, Backstage
1w
Save
Mark Applied
Hide
Staff / Principal Software Engineer
Toronto, Ontario, Canada
$80-$85/hr HybridContract
10+ YOE10+ years software engineering experience; strong Java and Spring Boot; AWS and distributed systems expertise; experience with AI/ML data pipelines, edge/CDN, and AI coding tools (e.g., GitHub Copilot).
Java, Spring Boot, AWS, GitHub Copilot, JavaScript, TypeScript, Python, Databricks, JWT, OAuth2, PKI
2mo
Save
Mark Applied
Hide
Principal Software Engineer, MADS
Toronto, Ontario, Canada
$185k-$310k/yr OnsiteFull Time
10+ YOE10+ years software development, 7+ years building large-scale distributed systems, experience leading technical strategy for orgs of 30+ engineers, expertise in streaming/batch/columnar data systems, Bachelor's in CS or equivalent.
Kafka, Flink, Kinesis, Spark, EMR, Parquet, Iceberg, Delta Lake, S3, SQS, Firehose
1mo
Save
Mark Applied
Hide
Principal Software Engineer
Toronto, Ontario, Canada
$113k-$162k/yr HybridFull Time
9+ YOE9+ years data engineering experience; proven cloud data pipeline expertise (AWS preferred); strong SQL and Python (3.x); experience with Spark/PySpark, DuckDB, cloud warehouses (Snowflake/Databricks/Redshift), containerization, and cloud object storage.
AWS, Azure, GCP, Spark, PySpark, DuckDB, SQL, Postgres, SQL Server, Python (Python 3.x), Snowflake, Databricks, Redshift, Docker, Kubernetes, AWS S3, Azure Blob Storage, Google Cloud Storage, GitHub Copilot, Claude Code, Cursor
2mo
Save
Mark Applied
Hide
Principal Software Developer
Montreal or Toronto or Ontario or Quebec or Canada
HybridFull Time
8+ YOE8+ years software development experience, expert JavaScript/TypeScript and modern web technologies, experience with large-scale/platform systems, CI/CD and automated testing (Jest, Cypress), strong architecture, distributed systems, performance optimization and cross-team technical leadership.
JavaScript, TypeScript, Jest, Cypress, CI/CD
3w
Save
Mark Applied
Hide
Principal Software Engineer
Buffalo, New York, United States
$179k-$189k/yr OnsiteFull Time
8+ YOE8+ years experience in solution/data architecture or related roles; experience with data architectures, ETL, REST APIs, CI/CD, Agile; Bachelor's in CS or related field accepted as alternative; strong communication and compliance awareness.
Mongo, Mark Logic, Snowflake, Redshift, Cassandra, SQL, Oracle, Microsoft SSIS, Azure ADF, Java, Python, Informatica, XQuery, GitLab CI/CD, GitLab, JIRA, Miro, Confluence
1mo
Save
Mark Applied
Hide
Principal Software Engineer
Toronto, Ontario, Canada
RemoteFull Time
12+ YOE12+ years hands-on polyglot experience with strong Go, Python, TypeScript skills; deep distributed-systems and AI experience; messaging and multi-cloud experience; excellent debugging and mentoring ability.
Go, Python, TypeScript, GCP, NATS, Kafka, Redpanda, RabbitMQ, LLMs, SLMs, RAG, knowledge graphs, agents
1w
Save
Mark Applied
Hide
Principal Software Engineer
Mississauga, Ontario, Canada
HybridFull Time
DAT Freight & Analytics: Software platform for freight matching and logistics data analytics.
12+ YOE12+ years building and architecting SaaS applications, deep .NET Core/C# and Angular experience, cloud and database proficiency, API and DevOps experience, bachelor's degree or equivalent.
.NET Core, C#, Angular, Azure, AWS, SQL Server, MySQL, PostgreSQL, REST/JSON, iOS, Android, Git, CI/CD, Claude Code, GitHub Copilot, OpenAI
4w
Save
Mark Applied
Hide
Principal Software Engineer
Austin or Toronto or Alabama or California or Florida or Georgia or Illinois or Indiana or Kansas or Kentucky or Maryland or Michigan or Missouri or North Carolina or Ohio or Oregon or Rhode Island or Tennessee or Texas or Virginia
RemoteFull Time
Technical leader with hands-on experience building and replatforming SaaS products, team leadership, proficiency with NodeJS, C#, PostgreSQL and Microsoft SQL, and experience using AI tools (Claude preferred).
Claude, NodeJS, C#, PostgreSQL, Microsoft SQL
2mo
Save
Mark Applied
Hide
Principal Automation Engineer
Toronto, Ontario, Canada
$130k-$145k/yr HybridFull Time
10+ YOE10+ years in software engineering and infrastructure automation; Bachelor's in CS/Engineering or related experience; strong Linux, IaC, and platform engineering expertise.
Ansible, Terraform, RedHat Linux, OpenShift, VMware, NetApp, PURE Storage, Portworx, Splunk, Grafana, RedHat Satellite, Python, Copilot, Claude
1mo
Save
Mark Applied
Hide
Staff Software Engineer
Mississauga, Ontario, Canada
$106k-$133k/yr HybridFull Time
8+ YOE8+ years software engineering experience; staff/principal level influence; deep C#, .NET/.NET Core expertise; REST API and cloud (Azure preferred) experience; strong communication and mentoring skills.
C#, .NET, .NET Core, RESTful APIs, ORMs, OpenTelemetry, Azure, React
Explore Jobs