406 junior developer jobs at 226 companies in Callahan, FL

2mo
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Junior Database Developer
Jacksonville, Florida, United States
$68k-$96k/yr OnsiteFull Time
S2Technologies
S2Technologies: Provides IT and cybersecurity solutions to government agencies.
3+ YOEDatabase development with Access, SharePoint, SQL, VBA, HTML; Bachelors or equivalent experience.
Microsoft Access, SharePoint, SQL, VBA, HTML, MS Office
3d
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Application Developer
Jacksonville or Atlanta
OnsiteFull Time
Intercontinental Exchange
Intercontinental ExchangeNYSE: ICE: Operates global financial exchanges, clearing houses, and mortgage technology.
Design, develop, test and maintain application features using PHP/JavaScript and related frameworks; participate in Agile sprints with Jira; use Bitbucket and CI/CD; mentor junior developers.
Jira, Bitbucket, CI/CD, PHP, Javascript, HTML/CSS, CakePHP, JQuery, Node, React, MySQL, MongoDB, Linux, Apache, Amazon Web Services (S3, EC2, etc.)
4d
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Application Developer
Jacksonville, Florida, United States
OnsiteFull Time
Intercontinental Exchange
Intercontinental ExchangeNYSE: ICE: Operates global financial exchanges, clearing houses, and mortgage platforms.
Design, develop, test and maintain application features using PHP/JavaScript/HTML/CSS, frameworks (CakePHP,jQuery,Node,React), MySQL/MongoDB, Linux/Apache and AWS; use Jira/Bitbucket; mentor junior developers.
Jira, Bitbucket, CI/CD pipelines, PHP, Javascript, HTML/CSS, CakePHP, JQuery, Node, React, MySQL, MongoDB, Linux, Apache, Amazon Web Services (AWS)
3w
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Junior Environmental Engineer - Water Services
Jacksonville, Florida, United States
$64k-$105k/yr OnsiteFull Time
CDM Smith
CDM Smith: Provides engineering and construction services for infrastructure projects.
1+ YOEBachelor's in Civil, Environmental, or Chemical Engineering (or equivalent experience), 1 year related experience, proficiency with ArcGIS, HEC-RAS, SWMM, CADD, and Microsoft Excel; good written and verbal communication.
ArcGIS, HEC-RAS, SWMM, CADD, Microsoft Excel
3w
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Junior Environmental Engineer - Water Services
Jacksonville, Florida, United States
$64k-$105k/yr OnsiteFull Time
CDM Smith
CDM Smith: Engineering and construction firm for global infrastructure projects.
1+ YOEBachelor's in engineering (Civil/Environmental/Chemical) or equivalent experience, 1 year related experience, familiarity with water/wastewater design, site assessments, and technical reporting.
ArcGIS, HEC-RAS, SWMM, CADD, Microsoft Excel
3w
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Business Developer (Enhancements)
Jacksonville, Florida, United States
FieldFull Time
Down to Earth Landscape & Irrigation
Down to Earth Landscape & Irrigation: Provides commercial landscaping, irrigation, and golf course maintenance services.
1+ YOE1–2 years business development or sales experience preferred, bachelor's degree in business/marketing/sales preferred, proficiency with CRM and Microsoft Office, valid driver's license and local travel, cold calling and strong negotiation skills.
CRM, Microsoft Office, Hubspot, Aspire
3w
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Engineer Sr Lead, Systematics
Little Rock or Atlanta or Jacksonville or Milwaukee or United States
RemoteFull Time
FIS
FISNYSE: FIS: Provides technology solutions for merchants, banks, and capital markets
Expert-level knowledge of FIS Systematics applications; designing, coding, testing, implementing, and supporting complex Systematics solutions; leading and mentoring junior technicians; adaptable to mainframe environments.
FIS Systematics
2d
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FRONT END DEVELOPER I
Jacksonville, Florida, United States
OnsiteFull Time
Logistics Services International
Logistics Services International: Provides military training products and technical support services.
Entry-level front-end development skills in JavaScript/TypeScript, HTML5/CSS3, React/Redux, Git, NodeJS/NPM/webpack, REST APIs; bachelor's preferred; portfolio of three web apps; ability to obtain security clearance.
JavaScript, TypeScript, HTML5, CSS3, React, Redux, SASS, LESS, Git, NodeJS, NPM, webpack, REST APIs
1mo
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Generative AI Engineer, Officer
Jacksonville, Florida, United States
$77k-$107k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
2+ YOE2+ years in product development; strong Python and AI/ML skills (LLMs, Transformers); experience with data preprocessing, MLOps (Docker, OpenShift/Kubernetes), and production-grade model deployment.
Python, NumPy, Pandas, Scikit-learn, Gemini, OpenAI models (GPT series), Copilot, Claude, Llama, LangChain, LlamaIndex, Hugging Face, Transformers, Datasets, Tokenizers, LangGraph, FastAPI, Pinecone, Chroma, PostgreSQL, pgvector, PyTorch, TensorFlow, Docker, OpenShift, Kubernetes
2w
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Operations Engineer III - Special Missions (Brunswick GA)
Brunswick, Georgia, United States
OnsiteFull Time
Gulfstream Aerospace
Gulfstream Aerospace: Designs and manufactures long-range business jet aircraft
4+ YOEBachelor's in engineering or equivalent, 4 years manufacturing/engineering experience, Lean/Six Sigma knowledge, ability to develop processes, provide technical support, and mentor junior staff.
CADAM, CATIA, Solumina, SAP, Corridor
1w
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Vehicle Compliance & Analysis Junior Associate Consultant (Intern)
Jacksonville, Florida, United States
HybridInternship, Part Time
Mercedes-Benz Group
Mercedes-Benz GroupFrankfurt Stock Exchange: MBG: Produces luxury passenger cars and premium light commercial vans.
Undergraduate rising juniors/seniors available May 2026–May 2027; preferred data analytics/engineering background; hybrid availability 3 days weekly up to 28 hours and core hours 10AM–3PM; strong Excel, PowerBI, Power Automate skills.
Microsoft Excel, PowerBI, Power Automate, Microsoft Office
1mo
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Senior Engineer, Materials Engineering
Jacksonville, Florida, United States
OnsitePart Time
Johnson & Johnson
Johnson & JohnsonNYSE: JNJ: Global healthcare providing pharmaceuticals and medical technologies.
1+ YOEBachelor's in engineering/science with 3+ yrs, or Master's with 1+ yr, or PhD in relevant field; polymer/materials knowledge, project leadership, risk assessment, GMP/ISO compliance, travel up to 25%.
SAP Product Lifecycle Management
3mo
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Rail Bridge Engineer
Jacksonville, Florida, United States
OnsiteFull Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
3+ YOEBachelor's degree in engineering, PE (PE or P.Eng) required, bridge design experience (min 3 years preferred), familiarity with bridge and structural software, experience supervising junior staff, strong communication skills.
Bluebeam Revu, LEAP Bridge Enterprise, FB-MultiPier, LPile, AASHTOWare BrR, midas Civil, MDX, SAP2000, CSiBridge, RM Bridge, spColumn, STLBridgeLRFD, STLBridge, ADINA, LUSAS, Bentley OpenBridge Designer, OpenBridge Modeler, Autodesk Infraworks, Civil3d, Microsoft Office Suite, MicroStation, AutoCAD, MathCAD, LARSA, Prestress Concrete Design
3mo
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Rail Bridge Engineer
Jacksonville, Florida, United States
OnsiteAll Commitments Available
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
3+ YOE1+ MgmtBachelor's degree in engineering; PE license; at least 3 years in bridge design; proficiency with bridge design software and standards; experience leading junior staff.
Bluebeam Revu, LEAP Bridge Enterprise, FB-MultiPier, LPile, AASHTOWare BrR, MIDAS Civil, MDX, SAP2000, CSiBridge, RM Bridge, spColumn, STLBridgeLRFD, STLBridge, ADINA, LUSAS, Bentley OpenBridge Designer, OpenBridge Modeler, Autodesk Infraworks, Civil3D, MicroStation, AutoCAD, MathCAD, LARSA
1d
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Information Technology Specialist (ServiceNow Developer)
Fresno or Washington or Jacksonville or Chamblee or Chamblee or Fairview Heights or Covington or Lanham or Detroit or Kansas City or Saint Louis or Holtsville or Philadelphia or Guaynabo or San Juan or Memphis or Austin or Austin or Farmers Branch or Ogden or Kearneysville
$90k-$137k/yr OnsiteFull Time
IRS Office of Chief Counsel
IRS Office of Chief Counsel: Represents the IRS in tax litigation and legal matters.
1+ YOEExperience configuring and supporting ServiceNow ITSM, developing workflows, integrations using REST/SOAP, testing, and technical documentation; U.S. citizenship and federal employment eligibility required.
ServiceNow, Flow Designer, Workflow Editor, REST, SOAP, MID Server, JavaScript
2mo
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Civil Engineer - Designer - Engineer in Training
Brunswick, Georgia, United States
OnsiteFull Time
Thomas & Hutton
Thomas & Hutton: Civil engineering and consulting firm providing infrastructure and land development solutions.
2+ YOEBachelor's in Civil Engineering required, EIT certification (or obtain within 6 months), 2+ years designing land development with Civil 3D, AutoCAD/Civil 3D proficiency, strong communication and project management skills.
AutoCAD, Civil 3D
2mo
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Graduate Civil Engineer - Land Development
Jacksonville, Florida, United States
OnsiteFull Time
Alliant
Alliant: Provides professional engineering, planning, and land surveying services.
0+ YOEBachelor’s in Civil Engineering; 0-4 years in land development design or construction management; AutoCAD Civil 3D experience; GEOPAK or INROADS preferred; strong analytical and communication skills.
AutoCAD Civil 3D, GEOPAK, INROADS
1mo
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P-8A EWO Subject Matter Expert and Courseware Developer
Jacksonville, Florida, United States
OnsiteFull Time
A. Harold and Associates
A. Harold and Associates: Defense contractor providing engineering, training, and program support services.
2+ YOEMinimum 2 years maritime SME/courseware development experience, knowledge of P-8A operations, proficiency with Microsoft Word/Excel/PowerPoint/Outlook, strong communication and time management, able to obtain DoD Secret clearance, U.S. citizen required.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook
3w
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Field Engineer II - IT
Fernandina Beach, Florida, United States
OnsiteFull Time
Rayonier Advanced Materials
Rayonier Advanced MaterialsNYSE: RYAM: Manufactures high-purity cellulose and renewable materials from wood fiber
7+ years preferred in field services or IT engineering; experience with Microsoft Intune, Autopilot, SCCM, PC hardware, Microsoft 365, Entra ID, networking, server infrastructure and cybersecurity; ability to support office and manufacturing environments, travel, on-call rotations, and mentor junior staff.
Microsoft Intune, Windows Autopilot, SCCM, Microsoft 365, Microsoft Entra ID
3d
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Engineer II
Fernandina Beach, Florida, United States
OnsiteFull Time
Marriott International
Marriott InternationalNASDAQ: MAR: Operates and franchises a global network of hotels and resorts.
2+ YOEPerform preventive and corrective maintenance on hotel MEP systems, respond to guest repair requests, troubleshoot equipment, and follow safety procedures including Lockout/Tagout; CFC certification and valid driver's license required.