Web Developer / Application Security (AppSec) Engineer
ASSYST, Inc.
Job Description
Job Description
We are seeking a Web Developer / Application Security (AppSec) Engineer with expertise in secure software development and application security. The ideal candidate will have experience implementing Secure SDLC (SSDLC), DevSecOps automation, vulnerability remediation, and protecting web applications against the OWASP Top 10.
Responsibilities:
- Secure web applications and REST APIs through SSDLC and DevSecOps practices, perform application security testing, remediate vulnerabilities, analyze security logs, and implement Web Application Firewall (WAF) and file integrity monitoring.
- Develop and support applications using REST APIs, SQL, .NET/C#, JavaScript, Python, Node.js, React, and TypeScript, while leveraging security tools including SIEM, IDS/IPS, EDR/NDR, and Wireshark.
Preferred Qualifications:
- Experience with federal cybersecurity frameworks, including NIST, FISMA, and FedRAMP.
- U.S. Citizenship is required due to the nature of the work performed in support of a federal agency.
- Certifications such as CSSLP, GWEB, CASE, OSWE, OSCP, Security+, GSEC, or equivalent. Strong Application Security and offensive security certifications are highly desirable.
ASSYST is an Equal Opportunity Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, disability, military status, national origin or any other characteristic protected under federal, state, or applicable local law
- ...government’s most critical national security and defense priorities, helping protect... ...begins. Ardent is seeking a Web Developer Security Engineer to join our team. This position... ...the security of mission-critical web applications, APIs, and supporting cloud environments...ApplicationFull timeLocal areaRemote workFlexible hours
$110k - $135k
...cybersecurity, and cutting-edge application development. We pride ourselves on... ...Reporting to the Program Manager, the Web Developer Embeds security across the SDLC for mission-... ...analysis, FIM, WAF management ~3+ Web AppSec / AppSec Engineering / SSDLC ~ Modern web tech incl....Application- ...our clients. Position Title: Web Developer Security Engineer Location: US Congressional... ...Protects CBO’s mission-critical web applications, APIs, and sensitive data by embedding... ...years in Web Application Security, AppSec, or secure SDLC (SSDLC). Development...ApplicationWork at officeLocal areaRemote work
$115k - $190k
...Job Description Job Description Web Developer Security Engineer Clearance Requirement: Public Trust (Tier 2) Location: Remote/Hybrid... ...is seeking a Web Developer Security Engineer to support application security initiatives across web applications, APIs, and...ApplicationRemote work- ...IT, cloud, cybersecurity, engineering, and digital transformation... ...seeking an experienced Web Application Security Engineer to support a federal... ...Collaborate with software developers, DevOps engineers, and... ...in Application Security (AppSec), Web Application Security...ApplicationFull time
$100k - $110k
...Security Engineer Level 2 This position is responsible for design, planning, and implementation... ...network attached platforms and applications, ensuring compliance through structured... ...administration and security (Azure, AWS – Amazon Web Services) required. Experience in an...ApplicationTemporary workRemote workFlexible hours$71.2k - $166.1k
...Job Description The Senior Federal Information Systems Security Engineer (ISSE) serves as a technical integrator responsible for ensuring... ...or client-facing roles may be required to comply with applicable requirements, such as immunization/occupational health mandates...ApplicationContract workTemporary workWork experience placementRelocationFlexible hours$140k - $160k
...Edgewater is currently seeking an Application Security Engineer who will be a hands‑on... ...an exciting opportunity to develop the federal customer’s... ...agency’s Application Security (AppSec) program by defining... ...Professional (CSSLP). GIAC Web Application Penetration Tester...ApplicationContract workLocal areaRemote work$174k - $239k
...Secure Every Identity, from AI to Human Identity is the key to unlocking... ...looking for a Staff Software Engineer that will join the Auth0... ...protection with minimum developer friction. Identity & Access Management... ..., Okta offers equity (where applicable), bonus, and benefits,...ApplicationPermanent employmentLocal areaWorldwideFlexible hours- ...Collaborate with a team of engineers to implement * specific security policies in the CI/... ...SAST, DAST and SCA applications. Work with... ...teams to identify and develop automated security... ...at a code level in web and mobile... ...Fortify, Checkmarx, AppSec SE, Veracode, WhiteSource...ApplicationWork experience placement
- ...Modernize and unify mission-critical applications by improving information architecture, streamlining... ...testing with cleared personnel to develop intuitive user flows and wireframes.... ...Design and develop responsive, user-focused web interfaces using modern frameworks such...ApplicationFull time
$115k - $135k
...) is searching for a Front-End Developer to build and support dynamic applications with complex data flows for our public... ..., scientists, analysts, engineers, and consultants. Our clients trust... ...experience and delivering impactful web-based applications. Duties &...ApplicationFull time- ...As a .NET Full Stack Developer, you will play a critical role in the development and maintenance of web applications and services. You will be responsible for designing, coding, testing, and deploying high-quality software solutions using the .NET framework and associated...ApplicationFull time
- ...technologies Experience with the following web technologies: Tomcat (required), JSON... ...written communication skills with other developers and business client Preferred:... ...suite of products Experience in iOS Application Development Qualifications HTML...ApplicationFull timeWork at office
- ...versatile and skilled Full Stack Developer to join our dynamic team.... ...of robust and scalable web applications, managing everything from the... ...product managers, and other engineers to deliver high-quality software... ...to optimize performance and security. · Collaborate with...ApplicationFull time
$140k - $220k
...Consulting (BCC) is searching for a Full-Stack Developer to support the User Services and... ...in Computer Science or a scientific field (engineering, physics), or equivalent experience ~5+ years of full-stack web applications development, using Python, Django, and Angular...ApplicationFull time- ...Sr. Systems Security Engineer OVERVIEW: We are seeking for a Sr. Systems Security Engineer to... ..., Azure, Google Cloud), and enterprise applications. Perform system administration tasks... ...Nessus) EDR tools (e.g., Crowdstrike) Web App Scanning tools (e.g., Burpsuite,...Application
- ...Create and integrate RESTful APIs and third-party services. Ensure application responsiveness, cross-platform optimization, and performance... ...but not limited to skill sets, experience and training, security clearances, licensure and certifications, and other business and...ApplicationFull timeTemporary workRemote work
- ...looking for a highly talented, technical hands‑on Senior Security Engineer to develop and implement strategies to protect computer systems, networks... ...monitoring to include ingestion of logs such as: API, application/database, and flow logs into SIEM. Increasing Cloud...ApplicationFull time
- ...Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology... ...Endpoint Security Engineer is responsible for the administration... ...also requires expertise in developing automated workflows through... ..., enforcing device and application policies, supporting...ApplicationMonday to FridayFlexible hours
- ...Senior Full-Stack Engineer Zetier is seeking a senior full‑stack engineer to build modern, secure, and mission‑focused software supporting... ...Skills 5+ years experience developing production full‑stack apps... .../CD workflows for frontend applications Familiarity with DoD or...Application
- ...solutions across federal and commercial markets. Our services span application development, creative services, cybersecurity, data analytics,... ..., measurable results. Position Overview Full Stack Developer with experience building cloud-native applications using Java/...ApplicationRemote jobHourly payFull timeFlexible hours
- ...INFOSOL LLC is seeking a highly motivated Security Engineer to be a full-time employee in... ...external partners to protect mission-critical applications and infrastructure. Key... ...with top industry players such as Amazon Web Services (AWS), VMware, Microsoft and Nutanix...ApplicationFull timeContract workTemporary workLocal area
- ...Business Systems Inc. is a quickly developing worldwide System Integrator, Software... ...innovation, ERP and CRM counselling, Product Engineering, Business Intelligence, Data... ...front end developer skill for web and mobile applications, including mobile apps; Detail design...ApplicationFull timeLocal areaImmediate startWorldwide
- ...Full Stack Developer, AI-Focused Location: Washington, DC Schedule: Hybrid, onsite 3 days... ...experience across Microsoft technologies, modern web development, Power Platform, and general... ...Develop and maintain full stack applications using .NET, C#, ASP.NET, React, Node.js,...ApplicationFull time3 days per week
$60 - $70 per hour
...TITLE: Security Endpoint Engineer/Admin LOCATION: Washington DC... ...device policies and desktop applications in Microsoft Intune and JamF... ...using automated tools. · Develop and maintain endpoint operating... ...Solutions, data warehousing, Web Applications, Telecommunications...ApplicationHourly payLong term contractPermanent employmentFull time- ...Development Center U.S., Inc. Position: Security Engineer III - AMZ25957.4 Location: Arlington, VA... ...transit and at rest, Database security, Application security, Infrastructure security and Internal security processes. Develop security review tools utilizing Java and...Application
- ...be eligible to obtain a DoD security clearance The Role We... ...seeking a Senior Security Engineer to strengthen cloud and software... ...mission-critical cloud applications and maintaining compliance with... ...with internal teams to develop robust security architectures...ApplicationWork at office
- ...Information Systems Security Engineer (ISSE) Dobbs Defense Solutions is seeking an experienced... ...System Security Officers (ISSOs), and application teams to strengthen cybersecurity... ...continuous monitoring activities. Develop automation solutions using PowerShell,...ApplicationLocal area
$109k - $220k
...UI/UX Web Developer Location: Bethesda Work Type : Onsite Remote Work : NO... ...provide rapid prototyping of integrated web applications. You'll use a multitude of data source... ...SharePoint's, and other web development tools, security and information management capabilities...ApplicationFull timePart timeWork experience placementRemote work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Web Developer / Application Security (AppSec) Engineer. Be the first to apply!
- senior web developer Washington DC
- work from home web developer Washington DC
- junior web developer internship Washington DC
- junior web developer part time Washington DC
- remote entry level web developer Washington DC
- amazon web services engineer Washington DC
- web developer internship remote Washington DC
- remote web developer Washington DC
- c# .net web developer Washington DC
- remote junior web developer Washington DC


