Senior Backend Software Engineer (50008) in Hampshire

InfoSum is the world’s leading data collaboration platform, providing solutions to the world’s largest enterprises to allow collaboration across data sources and deliver richer customer experiences that prioritise consumer privacy. Our vision is to unlock data’s limitless potential, by enabling the world’s data to be connected but never shared. As a people‑first organization, we can offer you the personal and professional flexibility needed to get the job done, grow with us, and help challenge the status quo. If you want to work with a business that encourages collaboration, and champions the idea that the sum is greater than its parts, then we want to hear from you.

Job Overview

As a Senior Backend Engineer, you will be responsible for designing, building, and maintaining scalable, high‑performance backend systems that power InfoSum’s data collaboration platform. You will work closely with cross‑functional teams, including frontend engineers, product managers, and infrastructure teams, to deliver robust and efficient solutions. This role requires deep expertise in backend development, system architecture, and database management, with a focus on performance, security, and reliability.

Core Responsibilities

• Design and implement scalable, high‑performance backend services and APIs that support business needs.
• Identify and resolve performance bottlenecks to ensure smooth operation under high loads.
• Design, optimize, and maintain relational databases to support data integrity and scalability.
• Implement security best practices to protect data and ensure compliance with industry regulations.
• Develop automated testing strategies to maintain code quality and system reliability.
• Work with product, frontend and DevOps teams to ensure seamless integration and deployment of backend services.
• Provide mentorship to junior engineers and contribute to team knowledge sharing.
• Implement monitoring and logging solutions to proactively detect and address issues in production.
• Stay updated on emerging technologies and apply best practices to improve system efficiency and maintainability.

Company Requirements

Understand and comply with InfoSum’s security and privacy policies, maintaining a strong focus on information security in all backend‑related activities.

Qualifications

• 5+ years of experience in backend development, with expertise in Go.
• Experience with Python and/or Java would be advantageous.
• Strong understanding of distributed systems, gRPC, microservices architecture, and RESTful APIs.
• Experience with cloud platforms (AWS, Azure, or GCP) and containerization (Docker, Kubernetes).
• Solid understanding of database design, query optimization, and administration for relational (e.g. PostgreSQL) databases.
• Knowledge of scalability strategies, microservices architecture, load balancing, caching, and event‑driven architectures, in particular Kafka.
• Strong experience with CI/CD pipelines and automated testing to ensure reliable deployments.
• Excellent problem‑solving skills with the ability to diagnose and resolve complex technical issues.
• Strong collaboration and communication skills to work effectively in a cross‑functional team.

A competitive salary based on your experience and ability to perform in role, 25 days annual leave (excluding bank holidays) + a day off for your birthday + 2 Volunteering days, private medical insurance, life assurance – 4× your base salary, fantastic corporate discounts and mental wellbeing support, including a top‑of‑line EAP, salary sacrifice schemes, enhanced Maternity, Adoption.