SECTION I · THE BRIEF
Brief #83133Updated 24 AUG 2026BELFASTGreenhouseY COMBINATOR
Employbl Company Profile

Senior Systems Software Engineer

Symphony Communication Services Holdings, LLC designs and develops software solutions. The Company offers collaboration platform that transforms the way users communicate effectively and securely with a single workflow…

Location
Belfast
Company size
10–500
Posted
Yesterday
Via
Greenhouse
Section II · Premium ProfileMembers only
  • 01Comp band & equity packageLocked
  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked

7-day free trial · $25/mo · cancel anytime

Symphony Communication Services logo

Senior Systems Software Engineer · Symphony Communication Services

View company profile
Job title
Senior Systems Software Engineer
Job location
Belfast
Job description

About us @Symphony

Secure. Connected. Intelligent.

Symphony is an AI-powered communication and technology company fueled by interconnected platforms: messaging, voice, directory and analytics.

Our end-to-end encrypted technologies enable over 1,400 institutions to accelerate AI impact, prioritize data security, navigate complex regulatory compliance and optimize business interactions.

 

Role Description:

We are looking for a skilled and motivated Senior Systems Software Engineer to join our team. In this role, you will do Proof-of-Concepts, design, develop, and maintain high-quality software solutions that support our business needs, with a focus on ubuntu core, firmware, device drivers, hardware interfaces, and real-time communication technologies. You will work closely with cross-functional teams to deliver scalable and efficient applications while following best practices in software development.

If you are passionate about technology, low-level problem-solving, and working in a dynamic environment, we would love to hear from you!

 

Responsibilities:

  • Develop, test, and maintain software applications, ensuring high performance and reliability.
  • Collaborate with product managers, designers, and other engineers to define and implement new features.
  • Write clean, scalable, and maintainable code following best coding practices.
  • Debug, troubleshoot, and resolve technical issues as they arise.
  • Participate in code reviews, providing constructive feedback to peers.
  • Stay up to date with emerging technologies and contribute to continuous improvement efforts.
  • Ensure software security, data protection, and compliance with company standards.

 

Required Qualifications:

Technical Skills:

  • Fundamentals First: Strong grasp of computer science fundamentals, allowing you to adapt to new tools and environments rapidly.
  • Low-level: experience in understanding and debugging firmware device drivers and USB
  • Deep Analytical Thinker: Exceptional debugging and root-cause analysis skills, with a passion for diagnosing complex software behaviors.

Soft Skills:

  • Strong problem-solving and analytical thinking abilities.
  • Excellent communication and teamwork skills.
  • Ability to work in a fast-paced, collaborative environment.
  • Self-motivated and eager to learn new technologies.

Education & Experience:

  • Master’s or Bachelor's degree in Computer Science, Software Engineering, or a related field 
  • 7+ years of experience in software development

 

Compensation:

  • Salary Range: £ 57,000 - 70,000 base salary per year
  • Bonus Plan

 

Benefits and Perks:

  • Regional specific competitive benefits
  • Build your own Benefits (BYOB) perk
  • Local events, team building, and development opportunities 

 

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.

 

View job listing ↗
The Saturday Briefing

Get the Saturday tech briefing

New company profiles, funding moves, and who’s hiring across the market — every Saturday morning.

Symphony Communication Services headquarters

New York, NY

Company size

10500 employees

Founded

2014

Total raised

$1,150,000

View company profile ↗

Funding rounds

  • Pre Seed$500K
  • Seed$200K
  • Seed$300K
  • Seed$150K