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Senior Full Stack Software Engineer Jobs in Holbrook, NY

SGS

Senior Software Engineer (Hybrid)

Farmingdale, NY · On-site

$128K - $169K/yr

And we will be 100% committed to helping you reach your full potential. The Senior Software Engineer (with hardware interfacing) is responsible for the design, delivery, support, and improvement of ...

KWI

Sr Software Engineer

Melville, NY · On-site

$125K - $165K/yr

As a Senior Software Engineer at KWI, you'll play a critical role in redefining how retailers ... Takes full ownership over decisions, actions or failures * Lead the development and implementation ...

KWI

Sr Software Engineer

Huntington Station, NY

$130K - $171K/yr

As a Senior Software Engineer at KWI, you'll play a critical role in redefining how retailers ... Takes full ownership over decisions, actions or failures The impact you'll make * Lead the ...

Ttmtech

Senior Embedded Software Engineer

Farmingdale, NY · On-site

$122K - $215K/yr

The Senior Software Engineer is responsible for the following areas: * Design, develop, and ... Experience with full SW development life cycle * Radar, Surveillance, and Communication system ...

Ttmtech

Senior Embedded Software Engineer

Farmingdale, NY · On-site

$122K - $215K/yr

The Senior Software Engineer is responsible for the following areas: * Design, develop, and ... Experience with full SW development life cycle * Radar, Surveillance, and Communication system ...

Ttmtech

Senior DevSecOps Software Engineer

Farmingdale, NY · On-site

$122K - $215K/yr

The Senior DevSecOps Software Engineer is responsible for the following areas: * Design, implement ... Experience with full SW development life cycle * Must have excellent communication skills, both ...

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All JobsFull Stack Software Engineer JobsSenior Full Stack Software Engineer JobsSenior Full Stack Software Engineer Jobs in Holbrook, NY

Senior Full Stack Software Engineer information

See Holbrook, NY salary details

$45.2K

$137K

$193.6K

How much do senior full stack software engineer jobs pay per year?

As of Sep 3, 2026, the average yearly pay for senior full stack software engineer in Holbrook, NY is $136,991.00, according to ZipRecruiter salary data. Most workers in this role earn between $112,800.00 and $160,600.00 per year, depending on experience, location, and employer.

What is a senior full stack software engineer?

A Senior Full Stack Software Engineer is an experienced developer responsible for designing, building, and maintaining both front-end and back-end systems in web or software applications. They work with a variety of technologies, frameworks, and databases to ensure seamless functionality across the entire software stack. In addition to coding, they often provide technical leadership, mentor junior developers, and contribute to architectural decisions. Their role requires strong problem-solving skills, an understanding of best practices, and the ability to collaborate with cross-functional teams to deliver high-quality software solutions.

What does a senior full stack software engineer do?

A typical day for a Senior Full Stack Software Engineer involves designing and implementing new features, reviewing and improving code, and collaborating with product managers, designers, and other developers to deliver project goals. You might split your time between writing code for both front-end and back-end systems, participating in daily stand-up meetings, and providing technical guidance to junior team members. The role often requires balancing hands-on development with architectural planning and problem-solving for complex technical challenges. You’ll also frequently interact with stakeholders to gather requirements and provide updates, ensuring alignment throughout the software development lifecycle.

What are the key skills and qualifications needed to thrive as a senior full stack software engineer?

To thrive as a Senior Full Stack Software Engineer, you need deep expertise in both front-end and back-end development, strong problem-solving abilities, and a solid foundation in computer science principles, typically demonstrated by a bachelor’s or master’s degree in a related field. Familiarity with frameworks and languages like React, Angular, Node.js, Python, and proficiency in using cloud platforms, version control systems like Git, and continuous integration tools is crucial, and relevant certifications are an advantage. Exceptional communication, leadership, and teamwork skills help you effectively coordinate with cross-functional teams and mentor junior engineers. These skills ensure you can deliver robust, scalable solutions while driving project success and fostering a collaborative development environment.

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Senior Full Stack Software Engineer jobs near you
Infographic showing various Senior Full Stack Software Engineer job openings in Holbrook, NY as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 10% Part Time, and 7% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $136,991 per year, or $65.9 per hour.

Senior Software Engineer (Hybrid)

SGS

Farmingdale, NY • On-site

$128K - $169K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted yesterday

Job description

Company Description
SGS is the global leader and innovator in inspection, verification, testing and certification services. Founded in 1878, SGS is recognized as the global benchmark in quality and integrity. With over 99,600 employees in 130 countries and operating a network of more than 2,600 offices and laboratories, we provide services to almost every industry by assuring quality and safety of products and services.
Trusted all over the world, SGS is a market leader because we put 100% passion, pride, and innovation into everything we do. We encourage new ideas. We welcome people who challenge the way we do things. And we will be 100% committed to helping you reach your full potential.
Job Description
The Senior Software Engineer (with hardware interfacing) is responsible for the design, delivery, support, and improvement of complex in-house software applications in a laboratory environment, in a variety of languages (primarily C# and WPF). They design and develop solutions, based on scientific test specifications and/or laboratory requirements, which acquire data from laboratory apparatus and provide intuitive user interfaces needed to accomplish complex scientific tasks. They perform coding, debugging, testing, and troubleshooting throughout the software development life cycle and they work with onsite laboratory staff to help diagnose and resolve problems in software/hardware interfaces.
This position will need to be on-site at the Farmingdale, NY facility at least 2 days every week.
  • Leads development projects to provide new or enhanced functionality for internal and external customers external customers.
  • Designs, codes, tests and documents new systems or enhancements to existing systems and prepares the appropriate documentation.
  • Applies the principles of software engineering to the design, development, maintenance, testing, and evaluation of computer software.
  • Executes full software development life cycle (SDLC).
  • Develops flowcharts, layouts, and documentation to identify requirements and solutions.
  • Writes well-designed, testable code.
  • Provides implementation and post-implementation triage and support of business software solutions by programming and/or configuring enhancements to new or packaged-based systems and applications.
  • Produces specifications and determines operational feasibility.
  • Integrates software components into a fully functional software system.
  • Develops software verification plans and quality assurance procedures.
  • Oversees development of test data, system testing, and documentation for all phases of the software development life cycle.
  • Performs quality assurance on applicable functionality.
  • Documents and maintains software functionality. Reviews and makes changes to technical specifications and documentation.
  • Troubleshoots, debugs and upgrades existing systems.
  • Deploys programs and evaluates user feedback.
  • Ensures software is updated with latest features.
  • May oversee the training of users in operating procedures for application.
  • Complies with project plans and industry standards.
  • Adheres to internal standards, policies and procedures.
  • Performs other duties as assigned.
  • May assume a team lead role for the work group and may lead projects

Qualifications
Education and Experience
Required:
  • Bachelor's degree in information technology, Computer Science, Computer Engineering, or related discipline (Required)
  • 7+ years of experience, including 3+ years' experience as a senior software engineer
  • Expertise in compiled language C#
  • Software development, specifically desktop applications using C# along with both WPF and WinForms
  • Solid understanding of software engineering principles, frameworks, and technologies
  • Prior experience directly gathering and analyzing end user requirements

Preferred:
  • Solid understanding and experience designing, troubleshooting, interfacing software applications with low voltage electronic circuits
  • Hands-on experience with Multi-Function DAQ (Data Acquisition) devices featuring multi-channel analog inputs/outputs and digital I/O. Experience includes signal conditioning, channel calibration, and developing software interfaces for data acquisition and analysis.

Computer Skills
Required:
  • Software development, specifically desktop applications using C# and one or more of the following: WPF, WinForms
  • Software development in a team environment using MS Azure DevOps
  • Internal/external client support
  • Troubleshoot problems and solving bugs
  • Software design patterns
  • Data encapsulation
  • Object Oriented Design
  • Functional programming
  • Unit Testing
  • Data structures and operating systems internals
  • Windows operating systems

Preferred:
  • Software development using .NET, .NET Core, ASP.NET, Angular, Entity Framework, SQL, and/or Relational DB
  • Interconnect hardware and software (e.g. PLC's, using actuators and scales)

Knowledge, Skills and Abilities Required
  • Demonstrated software development experience in computational science, engineering, computer science, or applied math.
  • Strong customer service orientation
  • Ability to work effectively in a team environment and as individual contributor
  • Excellent analytical, reasoning, and problem-solving skills
  • Excellent organizational and time management skills
  • Excellent verbal and written communication, and interpersonal skills
  • Highly focused attention to detail
  • Project management skills and ability to manage complex projects

Compensation
The expected salary range for this position is $90,000 - $115,000 annually. This range represents the minimum and maximum base salary we reasonably expect to pay for this role. Actual compensation within the range will depend on skills, experience, and qualifications.
Our Benefits
We care about your total well-being and will support you with the following, subject to your location and role.
  • Health: Medical, dental and vision insurance, life insurance, employee assistance programs.
  • Wealth: In addition to base pay, we offer 401(k) with company match (immediate vesting upon enrollment).
  • Happiness:
    • Professional Growth: Online training courses, virtual and classroom development experiences, tuition reimbursement program
    • Work-Life Balance: Paid-time off and family leave

In compliance with applicable state and local pay transparency laws, we provide clear and equitable compensation information for all applicants.
Position anticipated to close August 1, 2026.
Additional Information
SGS is an Equal Opportunity Employer, and as such we recruit, hire, train, and promote persons in all job classifications without regard to race, color, religion, sex, national origin, disability, age, marital status, sexual orientation, gender identity or expression, genetics, status as a protected veteran, or any other characteristics protected by law.
To perform this job successfully, an individual must be able to perform each essential duty satisfactorily with or without reasonable accommodations. The requirements listed above are representative of the knowledge, skills, and/or abilities required.
This job description should not be construed as an exhaustive statement of duties, responsibilities or requirements, but a general description of the job. Nothing contained herein restricts the company's rights to assign or reassign duties and responsibilities to this job at any time.
If you are applying for a position within the United States and you have difficulty completing the on-line employment application because of a disability, please call 201-508-3149 for assistance and leave a message. You will receive a call back. Please note, this phone number is not for general employment information, but is only for individuals who are experiencing difficulty applying for a position due to a disability.

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