At fish in a bottle, you get more than just perks (although we have plenty of those too). We provide a unique opportunity to make a real difference in people's lives through your work. Here, your success extends beyond the games you work on — you will join us in helping shape a future where gaming is a force for positive change.

fish in bottle 

Back-end Developer

This role is for a seasoned back-end developer to build scalable systems for a meaningful project at the intersection of games, education, and AI. You will be responsible for architecting and building backend systems that power adaptive gameplay, AI content generation, user progression, and parental dashboards. The goal is to scale the platform securely and reliably, supporting children's language development globally. Key responsibilities include building cloud-hosted APIs, integrating AI tools, designing secure and privacy-conscious systems, and shaping technical direction.

<div class="rich-text-block-2 w-richtext"><p>Remote Working / Full-time &nbsp;/ 18 month contract</p><p>Posted: 17 APRIL 2025</p><p>‍</p></div><div class="w-richtext"><h2 class="job-ad-heading-2">About you</h2><p>You're a seasoned back-end developer who thrives on building smart, scalable systems, especially when they’re part of something meaningful. You enjoy getting stuck into code, solving complex challenges, and seeing your work directly improve user experiences.</p><p>‍</p><p>You’re excited by the idea of working at the intersection of games, education, and AI, and you're motivated by the opportunity to shape technology that has a real impact. You’re pragmatic but ambitious, with lots of practical solutions.</p><p>‍</p><p>Collaboration is key for you - you enjoy working with developers, designers, and learning experts to create solutions that are not just technically sound, but also engaging and meaningful. You’re someone who sees the bigger picture, balancing innovation with practicality. You believe in purposeful design and building things that make a positive difference.</p><p>‍</p></div><div class="w-richtext"><h2 class="job-ad-heading-2">About the role</h2><p>This is a hands-on role where you’ll be architecting and building the backend systems that power everything from adaptive gameplay and AI content generation, to user progression and parental dashboards. </p><p>‍</p><p>You'll be key in helping us scale our platform securely, reliably, and in line with the needs of both learners and educators.</p><p>‍</p><p>Working closely with game developers and learning designers you’ll:</p><ul role="list"><li>Build cloud-hosted APIs and services to support gameplay and personalisation</li><li>Integrate AI tools like Amazon Bedrock to support real-time content generation</li><li>Design secure, privacy-conscious systems that respect children’s data</li><li>Help shape technical direction and infrastructure decisions as we scale</li></ul><p>You’ll be joining us at a pivotal stage, working on a project that’s not just innovative, but purposeful. The work you do will directly support children’s language development around the world.</p></div><div class="w-richtext"><h3 class="job-ad-heading-3">What you'll be doing</h3><ul role="list"><li>Designing and building robust, scalable backend systems to support educational gameplay</li><li>Developing secure, well-structured APIs to handle player progress, personalisation, and content delivery</li><li>Integrating AI models (via Amazon Bedrock and similar services) to support real-time storytelling and adaptive learning</li><li>Implementing data privacy and security best practices, especially around children’s data</li><li>Participating in architecture decisions and contributing to the long-term technical direction of the platform</li><li>Monitoring, optimising, and improving backend performance across environments and use cases</li><li>Writing clean, maintainable, well-tested code, and encouraging good development practices across the team</li></ul><h3 class="job-ad-heading-3">What we're looking for</h3><ul role="list"><li>Proven experience designing, building, and maintaining backend systems in production environments</li><li>Solid programming skills </li><li>Experience working with cloud platforms, preferably AWS, and deploying scalable, secure services</li><li>Familiarity with API designand asynchronous workflows</li><li>A good grasp of data privacy and security best practices, particularly when working with sensitive or regulated data</li><li>A strong interest in or experience with AI/ML integrations (e.g. OpenAI, Amazon Bedrock, Hugging Face, etc.)</li><li>An appreciation for user-centred design, even when working deep in the backend</li></ul></div><div class="w-richtext"><h2 class="job-ad-heading-2">About fish in a bottle</h2><p>Our mission is to make the world better through playable experiences.</p><p>‍</p><p>For over twenty years we’ve collaborated with visionary innovators, brands and educators, making us one of the most experienced interactive studios in the world.</p><p>‍</p><p>We work with visionaries to create commercial hits, award winners and purposeful products that improve people’s lives.</p><p>‍</p><p>We create games, apps and web platforms that educate, train, raise awareness, promote social change and positively impact people’s lives.</p><p>‍</p></div><div class="w-richtext"><h2 class="job-ad-heading-2">Things to know</h2><p>The position is open to anyone eligible to work in the UK.</p><p>‍</p><p>There is the need to travel from time to time to attend client and company meetings.</p><p>‍</p><p>Please consider your ability to travel occasionally when applying for this position.</p></div><div class="w-richtext"><p>‍</p></div><div class="rich-text-block w-richtext"><h2 class="job-ad-heading-2">Ready to join us?</h2><p>Apply now! Send us your:</p></div><div class="w-richtext"><ul role="list"><li class="list-item">CV</li><li class="list-item">A brief introduction and tell us a bit about yourself, why you like the sound of the role and fish in bottle.</li><li class="list-item">Any portfolio work, case studies, or GitHub links.</li><li class="list-item">Salary expectations.</li></ul><ul role="list"> </ul><p>We carefully review each application, but unfortunately we’re not able to get back to everyone individually. If we’d like to progress with your application we’ll be in touch with you within two weeks.</p><p>‍</p><p><strong>No recruitment agencies, please. Direct candidates only. </strong></p><p>‍</p><h2 class="job-ad-heading-2">Equality</h2><p>We are committed to promoting equality, valuing diversity and working inclusively, we uphold these principles in our behaviour and working practices. We are therefore committed to promoting equality at every opportunity and our recruitment and employment practices and procedures actively promote equality of opportunity.</p><p>‍</p></div>

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<p>- This assessment gives us an idea of your C++ skills<br>- Companies that evaluate this skillset in interviews: <strong>Rockstar Games, Ubisoft, Mayhem Studios, etc.</strong><br>- 10 Multiple Choice questions<br>- Average time to complete: <strong>7 to 10 minutes</strong></p>

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Mercury

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Mercury is seeking a seasoned Senior Account Executive to join its growing eCommerce sales team. This role involves selling to established, high-value mid-market brands generating millions in annual revenue. The ideal candidate will be a proven closer who thrives in a fast-moving, resourceful environment. Responsibilities include partnering with eCommerce founders to deeply understand their banking, cash flow, and operational needs, leveraging knowledge of financial tools and credit products to build tailored solutions across Mercury’s offerings.

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<p class="my-4 text-gray-700 leading-relaxed">Building Mercury’s customer base has turned out to be a wild endeavor! With our continued growth in the eCommerce space, we're looking for a seasoned sales professional to join our eCommerce sales team. This role focuses on selling to established, high-value mid-market brands generating millions in annual revenue. You’ll bring the skills of a proven closer while still thriving in the fast-moving, resourceful environment Mercury is known for.</p><p class="my-4 text-gray-700 leading-relaxed">You’ll partner with eCommerce founders to understand their banking and cash flow needs on a deep level. Additionally, you’ll have to understand their operations and have a knowledge set of financial tools and credit products.</p><h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">What You’ll Do</h1><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Own the full sales cycle from self-sourced pipeline to close, selling to mid-market eCommerce brands generating millions in annual revenue</li><li class="leading-relaxed">Proactively identify opportunities to introduce new products such as our credit card, working capital, and treasury offerings in addition to activating them on products sold in the first 90 days.</li><li class="leading-relaxed">Build and maintain a high-quality pipeline through self-prospecting, outbound campaigns, and strategic networking. Building a personal network and brand is critical and will include attending conferences, events, and relationship building with your clients and prospects.</li><li class="leading-relaxed">Conduct in-depth discovery to uncover strategic, operational, and financial needs, building tailored solutions across Mercury’s banking, credit, and treasury products.</li><li class="leading-relaxed">Drive consultative, value-based sales with decision-makers and C-level stakeholders</li><li class="leading-relaxed">Work closely with underwriters to design compelling capital offers for complex, high-value deals.</li><li class="leading-relaxed">Collaborate with our Relationship Management team to ensure high customer satisfaction and long term retention.</li><li class="leading-relaxed">Continuously research and identify strong eCommerce brands, developing deep understanding of their businesses</li><li class="leading-relaxed">Share customer insights and feedback to help inform and prioritize product development</li></ul><h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">You should:</h1><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Have a Bachelor’s degree or equivalent experience</li><li class="leading-relaxed">3+ years of quota-carrying AE experience, with at least 2 years in a closing role selling to mid-market customers</li><li class="leading-relaxed">Proven track record selling to brands/companies doing $10M+ in annual revenue ideally in eCommerce, SaaS, fintech, or related industries</li><li class="leading-relaxed">Experience managing longer, multi-stakeholder sales cycles while maintaining momentum and creating urgency</li><li class="leading-relaxed">Strong discovery, solution selling, and negotiation skills</li><li class="leading-relaxed">Comfort building and managing a healthy, self-sourced pipeline</li><li class="leading-relaxed">Ability to balance strategic thinking with hands-on execution</li><li class="leading-relaxed">Strong product acumen with the ability to translate customer needs into clear, actionable feedback, with much of our product innovation driven by insights from the sales team!</li><li class="leading-relaxed">Familiarity with MEDDICC or similar sales methodologies (preferred but not required)</li><li class="leading-relaxed">Passion for fintech and eCommerce, and curiosity about complex business challenges</li><li class="leading-relaxed">Collaborative mindset and desire to raise the performance of the entire team</li></ul><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Mercury is a financial technology company, not a bank. Banking services provided by Choice Financial Group, Column N.A., and Evolve Bank & Trust, Members FDIC.</li></ul><p class="my-4 text-gray-700 leading-relaxed">The total rewards package at Mercury includes base salary, equity, and benefits.</p><p class="my-4 text-gray-700 leading-relaxed">Our salary and equity ranges are highly competitive within the SaaS and fintech industry and are updated regularly using the most reliable compensation survey data for our industry. New hire offers are made based on a candidate’s experience, expertise, geographic location, and internal pay equity relative to peers.</p><h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Our target new hire base salary ranges for this role are the following:</h1><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">US employees in New York City, Los Angeles, Seattle, or the San Francisco Bay Area: $169,900 - $191,200</li><li class="leading-relaxed">US employees outside of New York City, Los Angeles, Seattle, or the San Francisco Bay Area: $153,000- $172,100</li><li class="leading-relaxed">Canadian employees (any location): 160,600 - 180,600</li></ul><p class="my-4 text-gray-700 leading-relaxed">Mercury values diversity & belonging and is proud to be an Equal Employment Opportunity employer. All individuals seeking employment at Mercury are considered without regard to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation, or any other legally protected characteristic. We are committed to providing reasonable accommodations throughout the recruitment process for applicants with disabilities or special needs. If you need assistance, or an accommodation, please let your recruiter know once you are contacted about a role.</p><p class="my-4 text-gray-700 leading-relaxed">We use Covey as part of our hiring and / or promotional process for jobs in NYC and certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. 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This assessment gives us an idea of your C++ skills- Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc.- 10 Multiple Choice questions- Average time to complete: 7 to 10 minutes

Let's assess your Data Structures! - This assessment gives us an idea of your problem solving skills using DSA- Companies that evaluate this skillset in interviews: MPL, LILA Games, GSN Games, etc.- 10 Multiple Choice questions

Data Structures and Algorithms

Let's assess your Programming Patterns! ????- This assessment gives us an idea of your code architecture skills- Companies that evaluate this skillset in interviews: Dirtcube, PTW, Playshifu, etc.

Programming Patterns

Let's assess your OOPs skills! ????- This assessment gives us an idea of your fundamental OOPS concepts and Solid principles skills- Companies that evaluate this skillset in interviews: Hitwicket, GSN Games, Tomo Club, etc.

Object Oriented Programming

Let's assess your Unity Skills ????- This assessment gives us an idea of your Unity fundamentals- Companies you can apply for after taking this assessment: Godspeed games, Salvation Games, nCore Games, etc.