HiringCafe
Join our community

195 system software engineer jobs at 113 companies in Bethlehem, PA

2mo
Save
Mark Applied
Hide
Software Engineer
King of Prussia, Pennsylvania, United States
OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Senior software engineer to design and deliver high-performance embedded and enterprise software. Requires expertise in C/C++, Java or C#, Python/scripting, Git, build systems, IDEs, CI/CD, and ability to obtain Top Secret clearance (US citizen).
C/C++, Java, C#, Python, Windows, Linux, Microsoft PowerShell, Bash, Git, CMake, Make, MSBuild, Gradle, Microsoft Visual Studio, CLion, VSCode, Eclipse, JIRA, Confluence, Boost, JUnit, PyTest, NUnit, Jenkins, Azure DevOps, GitLab CI, MATLAB/Simulink, SysML, ARINC 429, MIL‑STD‑1553
Job PostingView all
3mo
Save
Mark Applied
Hide
Software Engineer
Picatinny Arsenal, New Jersey, United States
$175k-$210k/yr OnsiteFull Time
Science and Technology Corporation
Science and Technology Corporation: Provides scientific, engineering, and technical services to government agencies.
10+ YOEEmbedded software for defense systems; 10+ years RDT&E experience; DoD Security Clearance; Master’s degree.
Embedded systems, Microcontrollers, FPGAs, ASICs, SOC, AI, ML, HWIL, SWIL
Job PostingView all
3mo
Save
Mark Applied
Hide
Software Engineer
Picatinny Arsenal, New Jersey, United States
OnsiteFull Time
ApolloTech MSI
ApolloTech MSI: Develops autonomous robotics and AI for defense.
Bachelor's/Master's/PhD in CS/Software Eng; strong C++, Python, Kotlin; embedded systems with C++/ROS2; experience with Nvidia Jetson; Unreal Engine a plus; strong problem solving and communication; US Citizenship and Secret Clearance required.
C++, Python, Kotlin, ROS2, Nvidia Jetson, Unreal Engine, Gitlab
Job PostingView all
3w
Save
Mark Applied
Hide
Principal Software Engineer
Moorestown, New Jersey, United States
$128k-$218k/yr OnsiteFull Time
ASRC Federal
ASRC Federal: Provides engineering and IT services to federal government agencies.
8+ YOEBachelor's in engineering/computer science or equivalent, U.S. citizenship, ability to obtain Secret clearance, 8+ years software development experience in real-time/mission systems, experience with Java, C++, or Python, Linux/UNIX, and IDEs.
Java, C++, Python, Linux, UNIX, Eclipse, UML, Clearcase, JIRA, xUnit, Junit, CPPUnitLite, Assemblers
Job PostingView all
2d
Save
Mark Applied
Hide
Software Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
Green Expert Technology
Green Expert Technology: Provides engineering and technical services for government defense programs.
3+ YOE3+ years software development experience for control systems, BS in CS/EE/CompE, Secret clearance, proficiency in C/C++/C#/Java, version control, testing, and technical documentation.
Microsoft.NET Framework, Windriver Workbench, Tornado IDE, Linux, C, C++, C#, Java, JIRA, Wiki, Confluence, TCP/IP, UDP, SVN, Git, Matlab, Labview, MS Access, SQL, PROFIBUS, MODBUS, IEC 61131-3, PLC
Job PostingView all
15h
Save
Mark Applied
Hide
Software Developer
Monmouth Junction, New Jersey, United States
$132k-$147k/yr RemoteFull Time
Encora
EncoraNSE: COFORGE: Provides global digital engineering and software product development services.
Design, develop, test, and maintain software systems; perform code reviews; participate in Scrum; provide client support and occasional travel.
Scrum
Job PostingView all
1mo
Save
Mark Applied
Hide
Lead Software Engineer
Basking Ridge or Minneapolis or Washington or United States
$113k-$193k/yr RemoteFull Time
UnitedHealth Group
UnitedHealth GroupNYSE: UNH: Provides health insurance and technology-enabled health care services.
8+ YOE8+ years software/data/ML engineering, 3+ years designing large-scale data/AI implementations; hands-on with Python, Java, .Net, SQL, Databricks, Spark, PyTorch/TensorFlow, LLMs/SLMs, cloud platforms (Azure/AWS/GCP), vector DBs and RAG systems.
Claude Code, GitHub Copilot, Codex, Python, Java, Scala, TypeScript, .Net, SQL, SQL Server, Oracle, Databrick, Databricks, Microsoft Power BI, PyTorch, TensorFlow, Scikit-learn, Llama models, Claude, Spark, Flink, Kafka, lakehouse, Azure, AWS, GCP, FAISS, Pinecone, Chroma, Retrieval-Augmented Generation (RAG)
Job PostingView all
1mo
Save
Mark Applied
Hide
Staff Software Developer
Canada or Philadelphia
$170k-$220k/yr RemoteFull Time
PENN Entertainment
PENN EntertainmentNASDAQ: PENN: Operates integrated casino gaming and online sports wagering platforms.
7+ YOE7+ years software engineering experience; strong CS fundamentals, distributed systems, PostgreSQL, GraphQL, gRPC, SQL, Kubernetes, observability (DataDog, Bugsnag); comfortable with Elixir, Java, Rust, TypeScript; testing framework experience; mentoring skills.
Elixir, Java, Rust, TypeScript, GraphQL, gRPC, SQL, PostgreSQL, Kubernetes, DataDog, Bugsnag, ExUnit, RSpec, Jest, pytest, AI
Job PostingView all
1w
Save
Mark Applied
Hide
Senior Software Engineer, Backend FinPlatform
New York City or San Francisco or Salt Lake City or Los Angeles or Seattle or Austin or Washington or Philadelphia or San Diego or Chicago or Atlanta or Australia or Canada or South America
$146k-$215k/yr RemoteFull Time
Flex
Flex: A financial platform allowing renters to split monthly rent payments.
6+ YOE6+ years software engineering experience, 4+ years with Java, experience with backend systems, APIs, data pipelines, AWS, and distributed teams.
Java, Spring, Gradle, JUnit, JVM, AWS, EKS, Aurora RDS, Elasticache, DynamoDB, GitHub Actions, git, DataDog, Snowflake, CDK, Terraform
Job PostingView all
1d
Save
Mark Applied
Hide
Senior Engineer Software Engineering Integration
Beerse or Spring House
HybridFull Time
Johnson & Johnson
Johnson & JohnsonNYSE: JNJ: Global healthcare providing pharmaceuticals and medical technologies.
5+ YOE5+ years software engineering experience; experience with cloud-native platforms, integrations, API design, regulated/validated systems (GxP), Python, CI/CD, and technical leadership.
AWS, Lambda, Step Functions, Docker, Kubernetes, Python, CI/CD, Kiro, Claude Code, ELN, LIMS, SDMS
Job PostingView all
1mo
Save
Mark Applied
Hide
Nuuly Senior Software Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Urban Outfitters, Inc.
Urban Outfitters, Inc.NASDAQ: URBN: Multinational lifestyle retail operating diverse apparel and home brands.
5+ YOE5+ years software engineering experience with ~2 years senior-level responsibility; strong JVM proficiency (Java/Kotlin/Scala), microservices, cloud (GCP/AWS/Azure), Kubernetes, Postgres/AlloyDB, distributed systems, and practical LLM/AI tooling experience.
Kotlin, Spring, Postgres, AlloyDB, Google Cloud Platform (GCP), AWS, Azure, Kubernetes, Docker, Java, Scala, Python, Go, Node, TypeScript, RESTful APIs, Kafka, Spark, Storm, ChatGPT, Claude, Cursor, Windsurf, Copilot, JVM, MCP
Job PostingView all
2mo
Save
Mark Applied
Hide
Overhead Contact System Electrification Engineer
Philadelphia or Pittsburgh
HybridFull Time
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
7+ YOE7 years rail electrification design experience; AC/DC OCS design; PE license; Bachelor's in Engineering; proficiency in design software; strong client interface.
AutoCAD, PLS-CADD, Plant 3D, AutoPIPE, Revit, Microsoft Office
Job PostingView all
1mo
Save
Mark Applied
Hide
HubSpot System Engineer
Chicago or Rochester or Cincinnati or Salt Lake City or Irving or St Petersburg or West Palm Beach or Allentown
$59k-$93k/yr HybridFull Time
Paychex
PaychexNasdaq: PAYX: Provider of payroll, human resources, and benefits outsourcing services.
3+ YOE3-5 years software development experience, OOP, relational database knowledge, Transact-SQL preferred, web development preferred; Bachelor's in Business or Computer Science preferred.
HubSpot, Transact-SQL
Job PostingView all
2mo
Save
Mark Applied
Hide
ERP System Developer
Sparta Township, New Jersey, United States
$20-$25/hr OnsiteFull Time
Techflex
Techflex: Manufactures braided sleeving and advanced cable management protection solutions.
2+ YOEDevelop and support ERP system; troubleshoot; document processes; collaborate with cross-functional teams; Bachelor’s in CS/Software Eng; 2+ years experience.
Rubicon, Windows
Job PostingView all
1w
Save
Mark Applied
Hide
Staff Software Engineer
Princeton, New Jersey, United States
$219k-$258k/yr HybridFull Time
Noom
Noom: Digital health platform offering psychology-based weight management programs.
8+ YOE8+ years backend engineering experience at staff level, strong Java or Kotlin and Spring, distributed systems, relational databases, cloud infrastructure (AWS preferred), leadership and AI tooling experience.
Java, Kotlin, Spring, AWS
Job PostingView all
2mo
Save
Mark Applied
Hide
Overhead Contact System Electrification Engineer
Philadelphia or Pittsburgh
HybridFull Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
7+ YOEBachelor's in Engineering, professional engineer (PE) required, 7+ years rail/transit electrification experience preferred; experience in AC/DC traction electrification and OCS design, structural/foundation design familiarity, Microsoft Office and sector design software proficiency, strong communication and leadership skills.
PLS CAD, AutoCAD, Plant 3D, AutoPipe, Revit, LPile, SAP2000, STAAD, LARSA, Microsoft Office
Job PostingView all
1mo
Save
Mark Applied
Hide
Lead Software Engineer
King of Prussia, Pennsylvania, United States
RemoteFull Time
Vertex
VertexNASDAQ: VERX: Automates global indirect tax calculation and compliance for enterprises.
5+ YOEBachelor's in CS/Information Systems/Electrical Engineering (or equivalent) and 5+ years experience with Java, Python, Go, SD QA, DevOps pipelines and cloud (AWS/Azure); strong design, automation and stakeholder coordination skills.
Java, Python, Go, AWS, Azure
Job PostingView all
2mo
Save
Mark Applied
Hide
Software Developer - Global Routing | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading and market making firm.
Experienced software developer with expertise in routing software and distributed systems.
Job PostingView all
2mo
Save
Mark Applied
Hide
Sr. Software Engineer
Wayne or Naperville
$120k-$135k/yr HybridFull Time
Frontline Education
Frontline EducationNYSE: ROP: Provides administrative and management software for K-12 school districts.
5+ YOE5–7 years backend engineering or intelligent systems with production impact; strong Python, CI/CD, and system design; experience with ML model APIs and cloud inference; familiarity with vector databases and retrieval systems.
Python, CI/CD, AWS Bedrock, Azure OpenAI, Google Vertex AI, PyTorch, Hugging Face Transformers, vLLM, FAISS, Pinecone, OpenSearch/KNN, LangChain, LlamaIndex, MLflow, Weights & Biases, Prometheus
Job PostingView all
3w
Save
Mark Applied
Hide
Senior Software Developer
Reston or Denver or Philadelphia
$120k-$160k/yr HybridFull Time
Iridium
IridiumNASDAQ: IRDM: Provides global voice and data satellite communication services.
8+ YOEBachelor's in CS or related, 8+ years software development experience, active Top-Secret/SCI clearance (recently active), proficiency in Python and Java, Linux/Bash, RESTful APIs, databases (PostgreSQL/MongoDB), CI/CD and containerization, strong communication and systems-level experience.
Python, Java, Bash, ELK stack (Elasticsearch, Logstash, Kibana), Elasticsearch, Logstash, Kibana, PostgreSQL, MongoDB, Kubernetes, Docker, Podman, ArgoCD, GitLab, JFrog Artifactory, Bitbucket, C++, TypeScript, Perl, XML, JSON, SQL, js, Apache Web Server, Jira, Confluence, Crucible, Git, Amazon Web Services (AWS), GovCloud, Atlassian
Job PostingView all

Explore Jobs

Expand Your Job Search