Senior Full Stack Software Engineer

Job#: 3017971

Job Description:

Apex Systems is currently hiring for a Sr Fullstack Engineer with one of our top clients!

Qualified candidates will have the following experience and skills:

• 8 + years of experience
• Front‑end: React; micro‑frontends (25+), complex UI workflows (drag/drop, tree grids, cross‑app components), reporting builder.
• Back‑end: Node.js (Express/Hapi), Sequelize ORM → Postgres; messaging via RabbitMQ; APIs with strict contracts; complex permissions models.
• AWS Managed Services: Cognito, SES, SNS, DynamoDB, Redis, OpenSearch, S3, ELB; EKS/Kubernetes for app infra; S3 for FE hosting.
• SDLC: Spec/design first → agile execution. Designs include API contracts, DB schemas, message schemas, test plans. Strong emphasis on integration tests and initial quality.
• Strong communication skills
  
  

Location: 100% remote

Pay range: $60-$70 an hour

Duration: 6 month contract to hire

If you are interested, please apply here or email an updated copy of your resume to [email protected]

Position Overview:

We are seeking a Senior Full Stack Software Engineer to help drive the continued evolution of our connected equipment solution. The Senior Full Stack Software Engineer will be a forward and innovative thinker, an excellent communicator, a strong problem solver, experienced with transformative projects, and will possess a passion for the IoT revolution. As a Senior Full Stack Software Engineer, you will be part of a highly collaborative development process, working on a complex and evolving platform. You’ll focus on designing and developing new features, writing cutting-edge code, and continuously enhancing the performance and scalability of our product line.

Your Responsibilities

• Design, develop, and deliver new features that advance our complex and evolving IoT platform.
• Write high-quality, efficient, scalable, and reusable code that powers our
  
  

connected equipment solutions.

• Take ownership of your work by writing unit tests and ensuring the reliability and performance of your code.
• Collaborate closely within a highly engaged, cross-functional development team.
• Provide technical leadership through mentoring, coaching, and supporting fellow developers.
• Contribute to architectural decisions, database optimization, and API design to enhance scalability and maintainability.
• Partner with product managers to define, scope, and plan innovative new features that drive the platform forward.
• Collaborate with senior leadership on strategic technical initiatives and long-term product direction.
• Work hand-in-hand with QA to ensure cohesive, high-quality, and user-centric solutions.
• Actively participate in and help improve our agile development process.
• Produce clear, detailed, and maintainable documentation to support knowledge sharing and platform growth.
  
  

Qualifications

• 8+ years of professional development experience.
• Proven experience as a Full Stack Software Engineer working on complex, large-scale platforms.
• Substantial experience with JavaScript, Node.js, and HTML/CSS is strongly
  
  

preferred.

• Engineers with experience in C#, .NET, or Python are encouraged to apply, provided they demonstrate a strong willingness to transition into and develop expertise within our JavaScript/Node.js-centric technology stack.
• Demonstrated ability to solve complex technical and business problems across diverse and evolving software architectures.
• Proven success working both independently and collaboratively on mission-critical initiatives in fast-paced environments.
• Substantial experience with SQL; experience with NoSQL is a plus.
• Experience designing, developing, and maintaining microservices-based
  
  

Browse our curated collection of remote jobs across all categories and industries, featuring positions from top companies worldwide.

architectures.

• Experience with containerized application deployments, especially using Docker, is highly preferred.
• Experience with large-scale data systems is highly preferred.
• Experience with message queueing architectures, especially RabbitMQ, is preferred.
• Experience with Amazon Web Services, especially EC2, S3, VPC, Elasticsearch, and Kinesis.
• Bachelor's Degree in Computer Science required or equivalent.
• Any IoT experience is a huge plus.
  
  

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at [email protected] or 844-463-6178.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click here for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Apex team member can provide.

Apex Systems is part of the Commercial Segment of ASGN Incorporated.

NYSE: ASGN

4400 Cox Road

Suite 200

Glen Allen, Virginia 23060

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.