Your MissionSenior Software EngineerReports to: Engineering Team LeadWorks closely with: Engineering Tech Lead, QA team membersSoftware: C#Location: UK / Estonia / US (remote-friendly within these regions)Role purposeThe 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 capabilitiesStrong experience as a software engineer in a production SaaS environmentProven ability to deliver complex, high-quality solutionsStrong understanding of testing, performance, and maintainabilityAbility to mentor others and influence through exampleSound technical judgement under pressureWhy this role mattersSenior engineers set the technical tone within teams.Done well, this role:Improves delivery quality and resilienceDevelops other engineersReduces technical riskWhat You'll Bring To The RoleKey responsibilitiesTechnical deliveryDesign and implement complex features and improvementsTake ownership of technically significant or high-risk workEnsure solutions are maintainable, testable, and well understoodHelp diagnose and resolve complex production issuesTechnical leadership (within the team)Provide guidance and mentoring to junior and mid-level engineersContribute strongly to code reviews and design discussionsSupport the Engineering Tech Lead in maintaining technical qualityIdentify technical risks and raise them earlyCollaboration and qualityWork closely with QA to ensure confidence in delivered changesEngage constructively with Product and other stakeholders as neededBalance pragmatism with long-term thinkingWhat this role is notThis is not a formal people management roleThis is not ownership of cross-team architectureThis is not a substitute for a Tech Lead or Principal EngineerSenior engineers succeed by delivering difficult work and elevating others.Why us?Perks & BenefitsRemote & flexible working – with hybrid options in London or ChichesterFantastic 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 advice25 days holiday + bank holidaysTraining, support, and personal developmentFind more English Speaking Jobs in United Kingdom on Arbeitnow