Game Developer jobs in Rotherham

Who We Are

At Cast Iron Games, we build technically ambitious games in a calm, focused environment, where every team member has a voice. Based in Tileyard North, we collaborate with high quality partners on high-quality projects, guided by clarity, consistency, and mutual respect.

We’re a young and growing studio, but our team is made up of experienced developers who’ve worked across AAA and independent titles. Together, we’re building a supportive, balanced environment where great work happens without crunch.

The Role

As a Senior Unreal Programmer, you'll be a key contributor on our engineering team, trusted to scope, implement, and maintain complex game or engine-level features. You'll collaborate across disciplines, support less experienced developers, and help shape the technical direction of the project through your initiative and experience.

You'll write clean, performant C++ code and Blueprints and be expected to deeply understand the systems you work on — from replication and architecture to profiling and debugging.

Responsibilities

• Own the development of large systems or features within Unreal 5

• Write clean, maintainable code using both C++ and Blueprints

• Collaborate closely with design, art, and production to ensure implementation aligns with projects goals

• Contribute to planning and task breakdowns with accurate estimates

• Proactively identify technical risks or design issues, and work with leads to resolve them

• Provide mentorship and code reviews for junior and mid-level engineers

• Optimise systems for performance, scalability, and platform constraints

• Write and improve internal documentation, tools, pipelines where needed

What We’re Looking For

Technical Experience

• Strong experience working with Unreal 4 or 5 in a production environment

• Proficiency in C++, Blueprints, and Unrealʼs component-based architecture

• Experience owning significant game systems, tools and tech subsystems

• Understanding of replication, memory/performance profiling, and debugging workflows

• Able to balance short-term priorities with long-term code maintainability

• Comfortable using Perforce or similar source control, and task/bug tracking tools such as Jira

Ways of Working

• Comfortable working independently, scoping and delivering complex features

• Proactive in raising blockers, discussing trade-offs and offering solutions

• Supportive of teammates through reviews, pairing and knowledge sharing

• Communicates clearly with both technical and non-technical collaborators

• Passionate about quality, clarity and making others more effective

Bonus Points

• Familiarity with AI, animation systems, or physics frameworks in Unreal 5

• Experience with multiplayer systems and networking in Unreal

• Shipped a title using Unreal 4 or 5 on console such as Xbox, PlayStation, Switch

• Built tooling or automation to support QA and build processes

Why Cast Iron Games

• A people-first studio with a clear focus on craft, clarity, and collaboration

• A high-trust team where experience is valued and voices are heard

• A respectful, experienced team with a strong engineering culture

• The opportunity to ship performance-optimised, cross-platform games youʼre proud of

• Projects that offer real variety. Different game engines, new challenges, constant growth

• Creative surroundings at Tileyard North, with a supportive creative community

• Competitive salary, flexible hours and professional development support

• Opportunities to lead with clarity, autonomy, and real impact

• No crunch. No egos. Just good code, good people and good games

What to Expect / Key Benefits

• Start your day any time between 8:00am and 10:00am

• 35 working hours per week with a 1-hour lunch break (with the opportunity to flex down to 30 minutes or up to 2 hours)

• 25 days annual leave + 8 days bank holiday

• 1 day leave for your birthday and 1 day leave if youʼre moving house

• Length of service increases are 1 day per year of service up to maximum of 8 additional days

• Up to 8 days discretionary annual leave during our end of year break

• Potential for annual performance bonus

• Free breakfast options, juice, hot drinks and fruit

• Employee referral bonus (up to £2000!)

• Group Life Assurance – 4 x annual salary payable to nominated beneficiaries through an expression of wishes form.

• Income Protection – covers you up for up to 50% of monthly salary for 2 years (after a 26 week deferred period, i.e. when SSP runs out)

• Critical Illness Cover – lump sum of 1 x annual salary on diagnosis of a critical illness

• Cycle to Work Scheme

• EV & Hybrid Car Scheme

• Tech Purchase Scheme – split the cost of Tech or Home electronics through salary deduction, interest free

• Healthcare Cash plan – claim back the cost of everyday healthcare, dental, physio, chiropractor, opticians, podiatry etc

• Private Medical Insurance with Vitality

• Reward Gateway with cashback and discounts on 900+ retailers

• Employee Assistance Programme including Virtual GP service

• Wellbeing Centre based on Mind, Move, Munch and Money