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Senior Multiplayer Programmer

Job in Southampton, Hampshire County, SO15, England, UK
Listing for: Kinetic Games
Full Time position
Listed on 2026-02-28
Job specializations:
  • Software Development
    Software Engineer, Backend Developer, Game Development / Testing
Salary/Wage Range or Industry Benchmark: 100000 - 125000 GBP Yearly GBP 100000.00 125000.00 YEAR
Job Description & How to Apply Below

We’re an independent games studio best known for creating Phasmophobia, enjoyed by millions of players worldwide. Our team is passionate, creative, and collaborative and we’re looking for someone equally enthusiastic about games to join our growing team.

We’re a small, friendly team that values creativity, openness, and personal growth. Whether you’re helping various departments or talking about your favourite horror game, you’ll be part of a supportive environment where passion and curiosity are celebrated. You’ll be joining a small but ambitious team where your ideas are valued, your growth is supported, and your development truly matters.

About the role:

We’re looking for an experienced Multiplayer Programmer to take ownership of our networked gameplay systems. You will be responsible for designing, implementing, and maintaining robust multiplayer architecture that supports millions of players in a live environment. This is a senior-level role requiring strong distributed systems thinking, performance awareness, and production experience shipping multiplayer titles. You will work closely with gameplay engineers, designers, QA, and production to ensure our multiplayer experience is authoritative, scalable, secure, and performant across platforms.

This role is hybrid based at our office in Southampton. At this time, we are unable to provide visa sponsorship. Applicants must have the right to work in the UK.

We’re ideally looking for someone who can start as soon as possible.

Your responsibilities will include:
  • Design and maintain client–server architecture
  • Implement and optimize state replication systems
  • Improve server authority and validation systems
  • Optimize bandwidth and server usage
  • Debug and resolve desync, latency, and networking edge cases
  • Collaborate with gameplay engineers to ensure multiplayer-safe feature implementation
  • Profile and improve network performance across PC and console platforms
  • Contribute to technical direction for online systems
Requirements:
  • 4+ years professional experience in game development
  • Proven experience shipping at least one multiplayer title
  • Experience with Unity multiplayer frameworks (Netcode, Mirror, Photon, or custom solutions)
  • Experience debugging complex synchronization issues
  • Ability to write clean, maintainable, production-ready code
  • Strong communication skills and ability to work cross-discipline
Deep understanding of:
  • Replication strategies
  • Latency mitigation techniques
  • Network optimization and bandwidth constraints
Nice to Have:
  • Strong knowledge of Phasmophobia
  • Experience on live or multi-platform projects
  • Background in gameplay or systems design
  • Experience shipping modern console multiplayer titles
  • Familiarity with backend services and matchmaking systems
  • Knowledge of anti-cheat strategies and server validation
  • Experience supporting live service games at scale

🍽️
Weekly free team lunches – good food, great company!

🎉
Regular social events – we love bringing our teams together!

🏠
Hybrid & flexible working options

🕓
Flextime – because life doesn’t always fit 9–5

📦
Relocation package to help you settle in

🏅
Employee of the Month vouchers

🎓
Training & Development Budget – invest in your growth with courses, conferences & learning resources

🎂
30 days holiday
, including your birthday and a dedicated wellbeing day

🎄
Christmas studio shutdown – enjoy the holidays, on us!

#J-18808-Ljbffr
Position Requirements
10+ Years work experience
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