Senior Backend Engineer - Casino UX at Midnite

📍 Job Overview

Job Title: Senior Backend Engineer - Casino UX

Company: Midnite

Location: London, England, United Kingdom

Job Type: Full-Time

Category: Backend Engineering / GTM Technology Operations

Date Posted: 2026-04-14

Experience Level: Senior (5+ years)

Remote Status: Fully Remote (UK-based)

🚀 Role Summary

• This role focuses on designing, developing, and scaling high-concurrency backend systems for a rapidly growing Series C betting platform, directly impacting user experience and real-time transaction processing.

• The position requires deep expertise in Python, Flask, PostgreSQL, and AWS services to build robust RESTful APIs and manage cloud infrastructure.

• A key aspect involves collaborating within a cross-functional squad to deliver innovative, real-time gaming features and ensuring system reliability during high-traffic events.

• The Senior Backend Engineer will own systems end-to-end, from architectural decisions and technical documentation to deployment and scaling, contributing to a modern, tech-first approach in the traditional betting industry.

📝 Enhancement Note: While the original job description is for a Backend Engineer, the emphasis on "high-concurrency backend systems," "real-time traffic spikes," "scaling services," and "architectural decisions" directly aligns with critical aspects of GTM Technology Operations and Revenue Operations. These roles often rely on robust backend infrastructure to support sales, marketing, and customer success technology stacks, ensuring seamless data flow and system performance, especially during peak sales periods or campaign launches. The focus on "Casino UX" suggests a complex, real-time, and data-intensive environment, requiring operations expertise in system reliability, performance monitoring, and integration.

📈 Primary Responsibilities

• Design, develop, and maintain robust backend services and RESTful APIs using Python, Flask, and PostgreSQL to power both mobile and web applications with a focus on user experience.

• Collaborate effectively within a cross-functional squad comprising product managers, designers, and trading experts to deliver immersive, real-time gaming features and betting functionalities.

• Take ownership of systems end-to-end, including architectural decision-making, creating comprehensive technical documentation, and monitoring/scaling infrastructure using tools like Terraform and AWS.

• Implement and manage high-concurrency systems capable of handling significant real-time traffic spikes, ensuring system stability and optimal performance during peak events.

• Integrate external partner systems and services, ensuring seamless data flow and functionality within the betting platform's ecosystem.

• Mentor junior engineers, contributing to their technical growth and fostering a culture of continuous learning and knowledge sharing within the engineering team.

• Contribute to architectural discussions and strategic technical decisions that directly impact the platform's growth and scalability.

📝 Enhancement Note: The responsibilities listed emphasize core backend engineering tasks. For a Senior Backend Engineer role within a GTM or Revenue Operations context, these would translate to ensuring the underlying technology infrastructure that supports GTM functions is reliable, scalable, and efficient. This includes building APIs for CRM integrations, developing data pipelines for analytics, or creating systems to manage high volumes of customer interactions or transactional data. The "mentoring" aspect is crucial for building a strong operational support team.

🎓 Skills & Qualifications

Education:

Experience:

• 5+ years of professional backend engineering experience, with a proven track record of designing and building scalable, high-performance systems.

Required Skills:

• Strong proficiency in Python or another major backend programming language.

• Deep understanding of relational databases, specifically PostgreSQL, including schema design, query optimization, and performance tuning.

• Extensive experience with cloud infrastructure, particularly AWS services such as SQS (Simple Queue Service) and S3 (Simple Storage Service).

• Expertise in designing and implementing RESTful APIs and understanding API architecture principles.

• Familiarity with Infrastructure as Code (IaC) tools like Terraform for managing cloud resources.

• Experience with high-concurrency systems and managing real-time traffic and data flows.

• Proven ability to own systems end-to-end, from architecture to deployment and maintenance.

Preferred Skills:

• Experience in the gaming, betting, or FinTech industries, where high concurrency and real-time transactions are critical.

• Familiarity with microservices architecture and containerization technologies (e.g., Docker, Kubernetes).

• Experience with performance monitoring and application performance management (APM) tools.

• Knowledge of message queuing systems beyond SQS for asynchronous communication.

• Experience contributing to technical documentation and architectural decision-making processes.

• Demonstrated ability to mentor junior engineers and contribute to team technical growth.

📝 Enhancement Note: The required skills are standard for a senior backend role. In an operations context, these would be directly applied to building and maintaining the technology backbone for GTM functions. For example, Python and Flask would be used to build custom integrations between CRM, marketing automation, and data warehousing tools. PostgreSQL expertise is vital for managing large datasets of customer or sales information. AWS, Terraform, and SQS are critical for ensuring scalability, reliability, and efficient data processing for GTM operations.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Demonstrations of complex backend systems designed and implemented, showcasing scalability and high-concurrency handling.

• Case studies detailing the architectural decisions made for specific features or services, highlighting the reasoning behind technology choices and trade-offs.

• Examples of robust RESTful API designs, including documentation or schemas that illustrate their structure and functionality.

• Projects that involved integrating various systems or external services, demonstrating proficiency in API consumption and data exchange.

Process Documentation:

• Candidates are expected to provide documentation examples or descriptions of processes related to system design, API development lifecycle, and infrastructure deployment.

• This includes showcasing how they approach technical documentation, architectural reviews, and the implementation of monitoring and alerting for critical systems.

• Demonstrations of how processes were optimized for performance, reliability, or efficiency in previous roles are highly valued.

📝 Enhancement Note: For a backend role that supports GTM operations, the portfolio should emphasize projects that highlight efficiency, data integrity, and scalability of systems directly impacting sales or marketing workflows. This could include custom CRM integrations, automated reporting pipelines, or tools that streamline lead qualification or customer data management. The ability to document processes clearly is paramount for knowledge transfer within an operations team.

💵 Compensation & Benefits

Salary Range:

• The UK market for a Senior Backend Engineer with 5+ years of experience, especially in a Series C tech company with significant funding and high-impact roles, typically ranges from £70,000 to £100,000 per annum. Given Midnite's backing and rapid growth, it's likely to be at the higher end of this spectrum, potentially reaching £110,000+ for exceptional candidates.

• Estimated Range: £85,000 - £110,000 per annum.

Benefits:

• Competitive salary and potential for stock options or equity, reflecting the senior nature of the role and company growth stage.

• Comprehensive health insurance, including medical, dental, and vision coverage.

• Generous paid time off (PTO) and public holiday allowance.

• Opportunities for professional development, including training, conferences, and certifications.

• Remote work flexibility with support for home office setup.

• Pension scheme contribution.

• Regular team social events and offsites (virtual or in-person).

Working Hours:

• Standard full-time working hours, typically 40 hours per week.

• While a remote role, the expectation is for core working hours that facilitate collaboration with UK-based teams, likely aligning with GMT/BST time zones. Some flexibility may be offered, but responsiveness during business hours is key.

📝 Enhancement Note: The salary estimate is based on industry benchmarks for senior backend engineers in London/UK, considering the company's funding stage (Series C), investor backing (Raine Group, Makers Fund), and the high-impact nature of the role. Benefits are typical for established tech companies in the UK, with a focus on professional growth and work-life balance, essential for retaining senior talent in specialized roles.

🎯 Team & Company Context

🏢 Company Culture

Industry: Online Betting & Gaming Technology

Company Size: Midnite is a Series C company, indicating a significant growth phase with likely 100-250 employees. The description mentions a 10x growth in the past year, suggesting a dynamic and expanding team.

Founded: Midnite was founded in 2015, giving it nearly a decade of experience in the market, now scaling rapidly with substantial investment.

Team Structure:

• The role is within the "Casino UX team," suggesting a dedicated group focused on the user experience aspects of the casino product.

• This team likely operates as a cross-functional squad, collaborating closely with product managers, designers, and trading experts to deliver features.

• Senior engineers are expected to contribute to high-level technical and architectural discussions, indicating a flat or meritocratic structure where expertise is valued.

Methodology:

• Modern engineering culture with daily deploys and no legacy code, emphasizing agility and continuous integration/continuous deployment (CI/CD).

• Tech-first approach to a traditional industry, suggesting innovation and leveraging technology to differentiate.

• High-autonomy environment, empowering engineers to make decisions and own their work.

• Data-driven decision-making is implied by the nature of a betting platform and the need to scale based on traffic and user behavior.

Company Website: https://www.midnite.com/

📝 Enhancement Note: A Series C company in the betting sector implies a fast-paced, high-growth environment. For operations professionals, this means dealing with rapidly evolving systems, significant data volumes, and the need for robust integrations to support an expanding customer base and product suite. The "no legacy code" aspect is a significant plus, suggesting modern tooling and practices.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as "Senior Backend Engineer - Casino UX." While primarily an engineering role, its responsibilities in system architecture, scaling, and high-concurrency management are directly relevant to the foundational technology that GTM operations relies upon. A Senior Backend Engineer in this context demonstrates the technical depth required to support complex GTM technology stacks.

Reporting Structure: The engineer will likely report to a Lead Backend Engineer or Engineering Manager within the Casino UX team. They will collaborate closely with Product Managers and Designers within their squad.

Operations Impact: The work directly impacts the reliability, performance, and scalability of the core betting platform. For GTM operations, this translates to ensuring that sales enablement tools, customer data platforms, and marketing automation systems built upon or integrated with this backend are stable, performant, and can handle peak loads, thereby directly influencing revenue generation and customer satisfaction.

Growth Opportunities:

• Technical Specialization: Deepen expertise in specific AWS services, Python frameworks, database optimization, or high-concurrency system design.

• Architectural Leadership: Transition into roles focused on system architecture, Principal Engineer, or Staff Engineer, shaping the technical direction of the platform.

• Mentorship and Team Lead: Grow into a technical lead or management position, guiding engineering teams and contributing to strategic planning.

• Cross-functional Exposure: Gain deeper insights into product management, UX design, and trading operations, potentially leading to hybrid roles or opportunities in adjacent tech domains.

• Industry Expertise: Develop specialized knowledge in the online betting and gaming technology sector, a niche but high-growth industry.

📝 Enhancement Note: The growth opportunities highlight a path for technical leadership and specialization. For someone interested in the intersection of engineering and GTM operations, this role provides a strong foundation in building and scaling robust systems, which is invaluable for managing complex technology stacks in sales and marketing.

🌐 Work Environment

Office Type: The role is fully remote within the UK. This implies a distributed team environment with an emphasis on digital collaboration tools.

Office Location(s): While remote, the company is based in London, UK. This means primary collaboration will be with individuals and teams in the UK time zones.

Workspace Context:

• Collaborative Environment: Expect a high degree of collaboration through digital channels (Slack, Zoom, etc.), with regular team meetings, code reviews, and pair programming sessions.

• Operations Tools & Technology: Access to modern development tools, cloud infrastructure (AWS), CI/CD pipelines, and collaboration platforms will be standard.

• Team Interaction: Opportunities for interaction will be through scheduled meetings, ad-hoc discussions, and potentially virtual social events to foster team cohesion.

Work Schedule:

• Standard 40-hour work week. Given the remote nature and UK focus, adherence to UK business hours (GMT/BST) is expected for effective collaboration with the immediate team and other departments.

📝 Enhancement Note: A remote-first, UK-based environment means candidates must be comfortable with asynchronous communication and proactive engagement with their team. For operations roles, this setup is common and emphasizes the need for excellent written communication and self-management.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Call with Jack (AI): A preliminary conversation to understand your experience, career aspirations, and suitability for the role.

• Screening with Jill (AI Recruiter): A more detailed discussion to assess technical fit and alignment with the company's needs.

• Technical Interview(s): Likely involves coding challenges (live or take-home) focused on Python, algorithm design, and problem-solving. Expect systems design questions related to high-concurrency and scalability.

• System Design Interview: A dedicated session to assess your ability to architect complex backend systems, handle trade-offs, and discuss scalability strategies.

• Team/Hiring Manager Interview: Focus on cultural fit, collaboration style, mentoring experience, and deeper dives into your past projects and contributions.

• Final Interview/Offer: Potentially with senior leadership, discussing the role's strategic impact and finalizing terms.

Portfolio Review Tips:

• Highlight Relevant Projects: Select projects that showcase your backend development skills, particularly those involving Python, PostgreSQL, AWS, API design, and scaling.

• Focus on Impact: For each project, clearly articulate the problem you solved, your specific contributions, the technologies used, and the measurable outcomes (e.g., performance improvements, scalability achieved, reduction in errors).

• Demonstrate Architectural Thinking: Be prepared to walk through the architecture of key projects, explaining your design choices and any trade-offs made.

• Showcase Documentation: If possible, provide sanitized examples of technical documentation or architectural diagrams you've created.

• Quantify Achievements: Use metrics whenever possible (e.g., "handled X requests per second," "reduced latency by Y%," "scaled to support Z users").

Challenge Preparation:

• Coding Proficiency: Practice coding problems on platforms like LeetCode, HackerRank, focusing on Python, data structures, and algorithms.

• System Design Fundamentals: Study common system design patterns for scalable applications, databases, caching, and message queues.

• AWS Knowledge: Brush up on core AWS services relevant to backend development (EC2, SQS, S3, RDS, Lambda).

• API Design Principles: Understand RESTful principles, API versioning, and security best practices.

• Behavioral Questions: Prepare for questions about teamwork, problem-solving, conflict resolution, and mentoring, using the STAR method.

📝 Enhancement Note: The interview process is typical for a senior engineering role at a growth-stage tech company. The emphasis on a portfolio review and technical challenges means candidates should be ready to demonstrate their practical skills and architectural thinking, not just theoretical knowledge. For operations roles, this translates to showcasing how you've built, optimized, and managed critical technology systems.

🛠 Tools & Technology Stack

Primary Tools:

• Programming Language: Python (primary), Flask (framework).

• Databases: PostgreSQL (primary relational database), potentially NoSQL databases for specific use cases.

• Cloud Platform: Amazon Web Services (AWS), including services like SQS, S3, EC2, RDS, Lambda, VPC.

• Infrastructure as Code: Terraform.

Analytics & Reporting:

CRM & Automation:

• Not directly applicable to this specific engineering role, but understanding how backend systems integrate with CRMs and marketing automation platforms is valuable context for GTM operations.

📝 Enhancement Note: This section details the core technology stack. For a Senior Backend Engineer, deep proficiency in Python, Flask, PostgreSQL, and AWS is non-negotiable. Terraform demonstrates an understanding of modern infrastructure management. Knowledge of how these components integrate is key for ensuring reliable GTM technology operations.

👥 Team Culture & Values

Operations Values:

• High-Performance & Reliability: A core value in a betting platform, ensuring systems are always available and performant, especially during critical events.

• Innovation & Agility: Embracing a modern tech stack, daily deploys, and a "no legacy code" philosophy to drive innovation and adapt quickly.

• Collaboration & Autonomy: Fostering a high-autonomy environment where engineers are empowered, but also emphasizing strong collaboration within cross-functional teams.

• Continuous Improvement: A commitment to learning, iterating, and improving systems and processes, as evidenced by daily deploys and a tech-first approach.

• Impact-Driven: Focusing on building features and systems that directly contribute to the company's growth and user experience.

Collaboration Style:

• Cross-functional Squads: Working closely with product, design, and trading teams, requiring strong communication and understanding of different perspectives.

• Code Reviews & Pair Programming: Expected practices for knowledge sharing, quality assurance, and collaborative problem-solving.

• Mentorship: A culture that values sharing knowledge and developing team members, particularly junior engineers.

• Data-Informed: Decision-making is likely informed by data on user behavior, system performance, and business metrics.

📝 Enhancement Note: The values align with a modern, fast-growing tech company. For operations professionals, this means a dynamic environment where efficiency, data, and collaboration are key. The emphasis on impact and continuous improvement is crucial for driving GTM technology initiatives.

⚡ Challenges & Growth Opportunities

Challenges:

• Scaling Under Load: Managing and scaling backend systems to handle extreme and unpredictable traffic spikes inherent in the betting industry.

• Real-time Feature Delivery: Developing and maintaining complex real-time features that require low latency and high accuracy.

• Integration Complexity: Seamlessly integrating with various third-party providers and internal systems in a regulated industry.

• Maintaining a Modern Stack: Continuously evolving the technology stack to stay ahead of competitors and leverage new advancements without introducing technical debt.

• Distributed Team Collaboration: Ensuring effective communication and collaboration in a fully remote environment.

Learning & Development Opportunities:

• Deep Dive into AWS: Advanced training and practical experience with a wide range of AWS services for building scalable and resilient systems.

• High-Concurrency Expertise: Developing specialized knowledge in optimizing systems for massive concurrent user loads.

• Domain-Specific Knowledge: Gaining in-depth understanding of the online betting and gaming industry's technical requirements and challenges.

• Architectural Leadership: Opportunities to lead the design of new systems and features, influencing the technical direction of the company.

• Mentorship and Coaching: Developing leadership skills by guiding and mentoring junior engineers.

📝 Enhancement Note: The challenges and growth opportunities are significant. For operations professionals, understanding these technical challenges is crucial for appreciating the infrastructure supporting GTM functions. The emphasis on scaling, real-time systems, and continuous learning aligns well with the evolving landscape of GTM technology and operations.

💡 Interview Preparation

Strategy Questions:

• System Design: "Design a real-time betting odds update system," "How would you architect a high-throughput API for user transactions?" "Design a scalable notification system for millions of users." Prepare to discuss trade-offs, scalability, fault tolerance, and specific AWS services.

• Technical Deep Dive: "Explain how you would optimize a slow PostgreSQL query," "Describe your experience with asynchronous processing using SQS," "How do you ensure idempotency in API calls?" Be ready to discuss Python/Flask specifics and database best practices.

• Problem Solving: Expect questions that require you to break down a complex technical problem, consider edge cases, and propose a robust solution.

Company & Culture Questions:

• "Why are you interested in Midnite and the betting industry?" Research Midnite's mission, recent funding, and competitive landscape.

• "Describe your experience working in a remote, agile team." Prepare examples of how you collaborate and maintain productivity in a distributed setting.

• "How do you approach mentoring junior engineers?" Provide specific examples of how you've guided others and contributed to team growth.

Portfolio Presentation Strategy:

• Select 2-3 Key Projects: Focus on projects that best demonstrate your skills in Python, PostgreSQL, AWS, API design, and scaling.

• Structure Your Narrative: For each project, use the STAR method (Situation, Task, Action, Result). Clearly articulate the problem, your role, the technical solution, and the impact (quantified if possible).

• Technical Depth: Be prepared to answer detailed questions about your architectural choices, the specific technologies used, and any challenges encountered.

• Focus on Scalability & Performance: Emphasize how your solutions handled or were designed to handle high concurrency and traffic.

• Demo if Possible: If you have a public-facing project or a well-documented personal project, be ready to briefly showcase it.

📝 Enhancement Note: Thorough preparation for system design and coding challenges is paramount. Understanding the company's mission and values will help tailor responses to cultural fit questions. A well-prepared portfolio presentation demonstrating practical skills and impact is crucial for a senior role.

📌 Application Steps

To apply for this Senior Backend Engineer position:

• Visit the Jack & Jill website and click 'Talk to Jack' to initiate the application process.

• Prepare Your Resume: Tailor your resume to highlight your 5+ years of backend engineering experience, specifically mentioning Python, Flask, PostgreSQL, AWS, Terraform, and experience with high-concurrency systems. Quantify achievements where possible.

• Curate Your Portfolio: Gather examples of projects demonstrating your backend development skills, API design, cloud infrastructure management, and problem-solving abilities. Be ready to discuss these in detail.

• Practice Technical Scenarios: Review common system design patterns, AWS services, and Python coding challenges. Prepare to articulate your thought process clearly.

• Research Midnite: Understand their business, technology stack, company culture, and recent achievements. This will help you ask informed questions and demonstrate genuine interest.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.

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