Senior Software Engineer

Linnworks; United Kingdom; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Remote and hybrid options

Hybrid options in London or Chichester

Laptop & home office budget – £500

Private Medical Insurance

Group Life Insurance & Wellbeing

Headspace access

25 days holiday + bank holidays

Training and personal development

Job summary

Linnworks in the UK offers a Senior Software Engineer role focused on delivering complex features in C#. This high-impact individual contributor position emphasizes maintainability, performance, and sound technical decisions while aligning with architecture and standards.

You will mentor junior engineers, participate in code reviews, and collaborate with QA and Product to ensure quality releases. Remote-friendly across regions with hybrid options.

Qualifications

• Strong experience as a software engineer in a production SaaS environment.
• Proven ability to deliver complex, high-quality solutions.
• Strong understanding of testing, performance, and maintainability.
• Ability to mentor others and influence through example.
• Sound technical judgement under pressure.

Responsibilities

• Design and implement complex features and improvements
• Take ownership of technically significant or high-risk work
• Ensure solutions are maintainable, testable, and well understood
• Help diagnose and resolve complex production issues
• Provide guidance and mentoring to junior and mid-level engineers
• Contribute to code reviews and design discussions

Skills

SaaS development

System design

Code reviews

Mentoring

Performance tuning

Testing

Tools

C#

Job description

Your Mission

Senior Software Engineer

Reports to: Engineering Team Lead

Works closely with: Engineering Tech Lead, QA team members

Software: C#

Location: UK / Estonia / US (remote-friendly within these regions)

Role purpose

The Senior Software Engineer is a high-impact individual contributor who delivers complex work and raises the effectiveness of the team around them.

This role exists to tackle technically challenging problems, support less experienced engineers, and contribute to sound technical decisions — all while remaining aligned with agreed architecture and standards.

Experience and capabilities

• Strong experience as a software engineer in a production SaaS environment
• Proven ability to deliver complex, high-quality solutions
• Strong understanding of testing, performance, and maintainability
• Ability to mentor others and influence through example
• Sound technical judgement under pressure

Why this role matters

Senior engineers set the technical tone within teams.

Done well, this role:

• Improves delivery quality and resilience
• Develops other engineers
• Reduces technical risk

What You'll Bring To The Role

Key responsibilities

Technical delivery

• Design and implement complex features and improvements
• Take ownership of technically significant or high-risk work
• Ensure solutions are maintainable, testable, and well understood
• Help diagnose and resolve complex production issues

Technical leadership (within the team)

• Provide guidance and mentoring to junior and mid-level engineers
• Contribute strongly to code reviews and design discussions
• Support the Engineering Tech Lead in maintaining technical quality
• Identify technical risks and raise them early

Collaboration and quality

• Work closely with QA to ensure confidence in delivered changes
• Engage constructively with Product and other stakeholders as needed
• Balance pragmatism with long-term thinking

What this role is not

• This is not a formal people management role
• This is not ownership of cross-team architecture
• This is not a substitute for a Tech Lead or Principal Engineer
• Senior engineers succeed by delivering difficult work and elevating others.

Why us?

Perks & Benefits

• Remote & flexible working – with hybrid options in London or Chichester
• Fantastic team culture based on trust and belonging.
• Laptop & home office budget – £500 to set up your ideal workspace.
• Private Medical Insurance with Aviva, including Dental & Optical.
• Group Life Insurance & Yulife Wellbeing & Rewards.
• Mental well-being support – Access therapy, mental health sessions, and yoga through a free premium subscription to Headspace.
• EAP confidential benefit – 24/7 access to compassionate guidance & expert advice
• 25 days holiday + bank holidays
• Training, support, and personal development