• Lead design and implementation of backend features and services that align with product strategy, security requirements, and quality standards • Champion AI-assisted development within the team and research the bleeding edge of best practice to keep evolving your knowledge that you share with the team • Author and review technical designs/RFCs; provide clear trade‑off analyses and decision records • Develop clean, maintainable, and well‑tested code with appropriate automated tests (unit, integration, contract, performance) • Improve service reliability through SLOs, alerting, logging, and tracing; participate in on‑call with a blameless approach to incidents • Collaborate closely with Product, Security, SRE, and Support to plan releases, manage risk, and deliver measurable customer value • Contribute to architecture within team scope (API boundaries, data models, messaging patterns, failure handling) • Drive security‑by‑design practices (threat modelling, secure authZ/authN, secrets management, least privilege) • Mentor engineers through code reviews, pairing, and design walkthroughs; help raise the bar on engineering practices • Continuously improve CI/CD pipelines, developer experience, and testing effectiveness • Contribute to sprint ceremonies, provide dependable estimates, and deliver on commitments with transparency

Who We Are Celebrating 40+ years! Theradex Oncology is a full-service CRO specializing in oncology. The company manages global oncology trials and programs. The company was founded in 1982 working with the National Cancer Institute, which led to its expansion to working with industry sponsors developing cancer therapeutics. As a service-based company we support both domestic and international sponsors in the conduct of both early and late phase trials. What You'll Do As part of Theradex Oncology, you will have the opportunity to work with one of the largest professional teams focused solely on the development of cancer therapies. Cancer research continues to evolve as new therapies and therapeutic approaches are discovered, as part of the team you will work to support our sponsors in the development of these therapies. Theradex Oncology is an environment for highly motivated individuals who want to make a difference. Opportunity Senior Full Stack Engineer - Contract Location: Princeton NJ and Remote – Preference given to applicants residing on the East Coast. We are seeing a Contract Senior Full Stack Engineer to design, build, and deliver modern, production-grade applications across the full technology stack. This role is hands-on and execution-focused, with responsibility for solution quality, performance, and usability. The position includes providing technical direction, guidance, and mentorship to mid-level and junior developers. Responsibilities will include: - Design, develop, and maintain end-to-end full stack solutions, including frontend, backend services, APIs, and data integrations - Build modern, responsive, and intuitive user interfaces, working closely with UX and product partners - Define and implement scalable, secure, and maintainable technical solutions for production environments - Translate product and business requirements into clear, well-structured technical designs - Provide ongoing technical guidance, code reviews, and implementation support to mid-level and junior developers - Promote and enforce best practices for coding standards, testing, CI/CD, and deployment - Take ownership of complex features and workflows from design through production release - Ensure application performance, reliability, security, and operational stability - Collaborate closely with product managers, designers, and stakeholders throughout the delivery lifecycle - Contribute to technical documentation, knowledge sharing, and continuous improvement initiatives . What You Need - Bachelor's degree required, Advanced degree preferred - 4–6 years of professional software development experience in full stack roles - Experience with end-to-end project to include gathering requirements, UX, production and deployment - 2+ years experience with .Net Core & C# - Strong experience with modern frontend frameworks (e.g., React, Angular, or Vue) - Solid backend development experience - Experience designing and consuming RESTful APIs - Working knowledge of relational and/or NoSQL databases - Experience building, deploying, and supporting production-grade applications - Familiarity with cloud platforms (AWS, Azure) and CI/CD pipelines - Strong understanding of software engineering fundamentals, testing strategies, and version control - Able to work effectively as a remote worker. - Possibility of occasional domestic travel for face-to-face meetings or training. Advanced notice will be provided. - Skills and Competencies - Agile/Scrum methodologies and sprint planning in a team environment - Experience with secure coding, performance optimization, observability (logging, metrics and tracing) in production systems - Proven track record owning technical decisions and deliver outcomes for a project or product area. - Extensive experience as a full stack developer, including delivering at least one complex system from concept to production - Strong analytical and organizational skills with the ability to prioritize tasks and track assignments to meet the needs of internal and external clients. - The ability to convery or share ideas in a concise terms that others understand. - Works to establish and maintain positive working relationships while offering added value and insight. - Guides others to strengthen their knowledge, skills, and abilities to accomplish goals. - Must have strong communication skills and be fluent in English. At Theradex we offer a supportive culture that puts people first. The annual base salary for this position ranges from $135,000-170,000. The actual salary offer will be based on a number of factors, including but not limited to the candidate’s qualifications, experience, skills, and competencies for the role. This is a contract position and not eligible for relocation or company provided sponsorship. Theradex is an Equal Opportunity Employer.

Halvik Corp delivers a wide range of services to 13 executive agencies and 15 independent agencies. Halvik is a highly successful WOB business with more than 50 prime contracts and 500+ professionals delivering Digital Services, Advanced Analytics, Artificial Intelligence/Machine Learning, Cyber Security and Cutting-Edge Technology across the US Government. Be a part of something special! Role Summary This role focuses on hands-on development and integration of ATRRS web components. The Senior Web Application Developer enhances the .NET web interface to consume modernized Java services while preserving existing user workflows and mission functionality. Key Responsibilities - Design, develop, and modify ASP.NET web applications - Integrate REST-based Java backend services into the web tier - Troubleshoot and resolve application defects - Support performance tuning and optimization - Participate in peer code reviews and technical documentation - Collaborate with QA and business analysts during testing cycles Clearance: Secret Location: Remote Degree: Bachelor's degree in Computer Science, Information Systems, Software Engineering, or related field Years of Experience: 8+ years in web application development Halvik offers a competitive full benefits package including: Company-supported medical, dental, vision, life, STD, and LTD insurance Benefits include 11 federal holidays and PTO Eligible employees may receive performance-based incentives in recognition of individual and/or team achievements. 401(k) with company matching Flexible Spending Accounts for commuter, medical, and dependent care expenses Tuition Assistance Charitable Contribution matching Halvik Corp is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Halvik's pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

• Design, build, and deliver backend systems and APIs. • Build and maintain full-stack product features. • Provide technical leadership. • Collaborate across disciplines. • Support and own your software in production. • Communicate clearly and multiply your impact.