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472 system developer jobs at 235 companies in Lancaster, PA

2w
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System Engineer Senior Staff (Level 5)
Huntsville or King of Prussia or Littleton
$128k-$256k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Experienced systems engineer proficient in MBSE (SysML,DODAF), requirements development, verification/validation, trade studies, risk management, cross-discipline collaboration, and able to hold TS/SCI clearance (US citizen).
MBSE, SysML, DODAF, Cameo
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System of Systems Architect Engineer (NAVWAR) - PNT
Aberdeen Proving Ground, Maryland, United States
OnsiteFull Time
Credence
Credence: Provides technology and management solutions to federal government agencies.
5+ YOEActive Secret clearance (TS/SCI preferred), bachelor's in engineering +7 years or master's +5 years in DoD/DoW systems-of-systems engineering; expertise in NAVWAR, EW, and SIGINT; experience across system lifecycle and architecture.
Defense Information System for Security (DISS)
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1mo
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Senior Staff Electronics System Engineer (remote)
New Freedom or United States
$115k-$150k/yr RemoteFull Time
Johnson Controls
Johnson ControlsNYSE: JCI: Provides integrated building technologies including HVAC, fire, and security systems.
8+ YOEBachelor's in electrical engineering (or related), 8+ years power electronics experience, starters and variable speed drives experience, technical documentation skills, ability to analyze complex power electronic problems; HVAC&R experience preferred.
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4d
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Distribution System Operator I - Reading, PA
Reading, Pennsylvania, United States
OnsiteFull Time
FirstEnergy
FirstEnergyNYSE: FE: Provides electric power distribution and transmission services to customers.
4+ YOEOperate and monitor regional distribution system, perform outage restoration, analyze system disturbances, and develop switching orders. Associate degree in electrical field or 4+ years related experience; strong communication and analytical skills.
Supervisory Control and Data Acquisition (SCADA), Energy Management System (EMS), PowerOn Outage Management System (OMS), Energy Delivery Outage Application (EDOA), Regional Dispatch Operations (RDO), Adobe Acrobat Reader
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IS Developer
Exton or Lexington or Peachtree City or Bridgman or Holland or Detroit or Houston
HybridFull Time
Convergix Automation Solutions
Convergix Automation Solutions: Designs and integrates custom industrial automation and robotics.
Experience with MES/IIoT and industrial controls, PLC platforms, network design, industrial software (Rockwell, Siemens, Aveva/Wonderware, GE), development using Python/Java/JavaScript/.NET, database systems, and practical use of AI coding assistants.
GitHub Copilot, Claude, Python, Java, JavaScript, Microsoft .NET, Microsoft SQL Server, PostgreSQL, MySQL, Oracle, InfluxDB, MQTT, Azure DevOps, AWS, Node-Red, Docker, Rockwell, Siemens, Aveva/Wonderware, GE, Inductive Automation's Ignition Platform, Sepasoft, Cirrus Link Solutions
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Software Developer II
New Holland or Pennsylvania or Ohio or South Dakota
OnsiteFull Time
Goodville Mutual Casualty Company
Goodville Mutual Casualty Company: Provides property and casualty insurance for homes and businesses.
Develop, implement, and maintain insurance systems; integration, web services, data mapping, automated testing; college degree or comparable experience in web or computer technologies required.
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Laboratory Instrument System Administrator
Lancaster, Pennsylvania, United States
OnsiteFull Time
Eurofins Scientific
Eurofins ScientificEuronext Paris: ERF: Global provider of analytical testing and laboratory services.
Bachelor's in physical science (or equivalent experience), strong computer and documentation skills, experience with HPLC techniques, Microsoft Word and Excel proficiency, GMP/GLP and validation experience, strong communication and attention to detail.
Microsoft Word, Microsoft Excel
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Associate Software Developer
West Chester, Pennsylvania, United States
HybridFull Time
Venerable
Venerable: Manages and optimizes legacy variable annuity business blocks.
1+ YOE1+ years professional experience in AI/ML and micro-service systems; proficiency with AWS services, Python, C#, ML libraries, and enterprise software development practices.
SageMaker, Lambda, EC2, S3, EFS, SNS, SQS, EventBridge, Kinesis, Aurora, DynamoDB, RDS Proxy, Glue, Athena, Redshift, AWS Step Functions, AWS CodePipeline, Python, TensorFlow, PyTorch, scikit-learn, C#, PowerShell, SQL, JavaScript, UML, Docker, Git, GitHub, Jenkins, Bamboo, TeamCity, SpecFlow, Cucumber, Protobufs, Thrift, Avro, JSON, ODBC, Kafka, Angular, React
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API Developer/Programmer
Aberdeen Proving Ground, Maryland, United States
$90k-$150k/yr OnsiteFull Time
SURVICE Engineering
SURVICE Engineering: Engineering services and survivability analysis for defense systems.
2+ YOEBachelor's degree in a technical field and 2+ years experience. Experience with web/API development, MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java, cloud/containerization, information systems security, and Agile.
MongoDB, PostgreSQL, Microsoft Azure, Keycloak, Java
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6d
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Senior Software Developer (NLP)
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOEUS citizen with Secret clearance; bachelor’s degree with 5 years relevant software development experience (or 8 years experience); experience integrating NLP into production, proficiency in modern programming languages and mission-critical systems.
Python, C++, Java, C#, Go, Docker, Kubernetes, transformer-based frameworks, vector databases, LLM APIs
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4d
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Principal Software Engineer
Lititz or United States
OnsiteFull Time
Listrak
Listrak: SaaS platform for unified retail marketing and cross-channel automation
12+ YOE12+ years software engineering experience; expert in scalable distributed systems, full-stack development, front-end frameworks, cloud-native apps, and technical leadership.
Vue.js, TypeScript, JavaScript, HTML, CSS, C#, .NET, Java, AWS, Kafka, Spark, Hadoop, Presto, GitHub Copilot, Claude Code, Codex
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1w
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Lead Software Engineer - Python/React/AWS/AI
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience with system design, application development, SDLC, CI/CD, cloud-native systems, and applied AI-assisted development; strong Python, Java, React, and AWS skills.
Python, Java, React, AWS, AI
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2mo
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CSV Lead/ Computer System Validation Lead
Philadelphia or Marietta
OnsiteFull Time
GBA
GBA: Provides engineering, architecture, and construction services for infrastructure.
10+ YOEBS in engineering,10+ years project/process engineering or validation experience,pharmaceutical/GMP experience preferred,Kneat and MS Office proficiency,excellent communication and problem-solving skills.
Kneat, Microsoft Excel, Microsoft Word, Microsoft Project, Microsoft PowerPoint, Microsoft Access
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4d
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SQL Developer & Analyst
New Holland, Pennsylvania, United States
$70k-$80k/yr OnsiteFull Time
VAL-CO
VAL-CO: Manufactures equipment for commercial poultry, egg, and swine production.
2+ YOE2+ years SQL development experience; proficiency with Microsoft SQL Server/T-SQL, .Net (C#, VB), JavaScript, html, TypeScript, and Crystal Reports; bachelor's in Information Systems/Computer Science or equivalent; ERP experience; travel to Ohio required.
.Net (C#, VB), JavaScript, html, typescript, Crystal Reports, SQL, Microsoft SQL Server, T-SQL, Windows Server, Macola ES, ERP
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1mo
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Senior AI Engineer
United States or Wilmington
$126k-$197k/yr RemoteFull Time
Chemours
ChemoursNYSE: CC: Manufactures specialty chemicals, refrigerants, and high-performance industrial fluoropolymers.
8+ YOEDegree in Computer Science/Engineering, 8+ years backend development with Python and JavaScript, 2+ years production GenAI systems experience, React/TypeScript UI skills, Pydantic proficiency, strong stakeholder communication.
Python, JavaScript, React.js, TypeScript, HTML, Pydantic, PyTorch, Azure, Azure Kubernetes, Office 365, GitHub
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4d
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Engineer, Site Reliability
Malvern or Charlotte
HybridFull Time
Vanguard
Vanguard: Provides mutual funds, ETFs, and investment management services.
8+ YOE8+ years experience with 2+ years development; expertise in distributed systems, Java/JavaScript, AWS, OpenTelemetry, Python, observability, cloud-native and production reliability.
Java, JavaScript, AWS, OpenTelemetry, Python
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2mo
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MCP/Integration Engineer
Aberdeen, Maryland, United States
HybridFull Time
NextGen Federal Systems
NextGen Federal Systems: Provides advanced software engineering and mission support to federal agencies.
5+ YOEBachelor’s degree in CS/engineering; 5+ years systems integration; API/middleware development; REST, Linux, Docker/Kubernetes; active security clearance required.
Python, Go, Java, C++, REST, Docker, Kubernetes, Linux
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1mo
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Lead Software Engineer
Newark, Delaware, United States
$128k-$201k/yr OnsiteFull Time
Hologic
HologicNASDAQ: HOLX: Develops medical technology for women's healthcare and diagnostics.
6+ YOE6+ years software engineering experience building cloud and edge systems; experience in regulated environments, secure development practices, QMS familiarity, AI integration, Agile and version control proficiency; degree in CS/SE/STEM.
Microsoft Azure, Google Cloud Platform (GCP), Agile
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2mo
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Senior Salesforce Solutions Developer
District of Columbia or Delaware or Maryland or New Jersey or Pennsylvania or Virginia or East Petersburg
$91k-$152k/yr RemoteFull Time
Fulton Bank
Fulton BankNASDAQ: FULT: Provides regional banking, mortgage, and wealth management services.
7+ YOE7+ years applications development; 5+ years with Salesforce Lightning, LWC, Flows, APEX; experience with Financial Services Cloud, Marketing/Data Cloud; CI/CD (Copado, Gearset, SF DX) and nCino; Bachelor’s in information systems/engineering or equivalent; preferred Salesforce certs.
Salesforce Lightning, Custom Lightning Web Components, Flows, Flow Builder, APEX, APEX Test, Financial Services Cloud, Marketing Cloud, Data Cloud, nCino, Copado, Gearset, SF DX, CI/CD
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Lead Software Engineer - C# / .Net
Wilmington, Delaware, United States
$128k-$214k/yr HybridFull Time
M&T Bank
M&T BankNYSE: MTB: Provides retail, commercial, and wealth management banking services.
5+ YOE5+ years systems analysis/application development (or 7+ with associate). Expert C#/.NET experience, RESTful API and service architecture, DevOps/CI/CD familiarity, exposure to Angular, strong analytical and communication skills.
C#, .NET, RESTful APIs, Angular, CI/CD, DevOps, SDLC, Loan IQ, Finastra
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