Senior Full - Stack Engineer at Pixelmatters designing and implementing scalable architectures. Leading technical decisions and mentoring in a hybrid work environment.
About the role
- Principal Engineer overseeing system design and platform evolution at Picnic. Focus on scalable and cost-efficient infrastructure amidst growing complexity.
Responsibilities
- Act as architectural steward of the platform, ensuring scalability, reliability, performance, and cost efficiency as complexity increases
- Design and evolve backend systems, data pipelines, real-time services, and APIs to support both internal capabilities and external customers
- Introduce clear engineering principles and patterns to reduce duplication and architectural drift across workstreams
- Strengthen AWS architecture and cloud cost efficiency through thoughtful service design, right-sizing, and operational discipline
- Drive best practices around system design, observability, automation, CI/CD, and production operations
- Embed AI-native development workflows across the team - using LLMs and agents effectively for code generation, testing, refactoring, documentation, and experimentation
- Stay close to the systems and codebase, contributing directly to critical components and unblocking complex technical challenges
- Act as a senior technical escalation point, supporting engineers in making strong system-level decisions
Requirements
- Proven hands-on experience delivering and operating backend or distributed systems in a startup or scale-up environment
- Deeply experienced in cloud architecture, particularly within AWS
- Worked across product engineering, infrastructure, and data systems
- Confident designing systems that balance short-term delivery with long-term maintainability
- Comfortable integrating AI tools and agent workflows into engineering practice
- Strong judgement around trade-offs, technical debt, and operational risk
- Clear communication with technical and non-technical stakeholders
- Experience in advertising technology is a bonus!
Benefits
- Flexible, hybrid working setup (with regular time in the office throughout the week so you will live in or around London)
- 33 days holiday (inclusive of Bank Holidays), plus additional Christmas shutdown
- Private Medical Insurance through Vitality
- Picnic pension contribution
- Inclusive parental leave policy
- A great co-working space, regular socials and offsites, Picnic Thursdays, Summer Fridays, and Work-from-Roam opportunities
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
No Education Requirement
Tech skills
Location requirements
Senior Software Engineer responsible for banking services at AngelList, managing foundational systems for startups. Collaborating with teams to integrate financial infrastructure efficiently.
Senior Software Engineer focused on Endpoint development at Tanium building and maintaining backend services. Collaborating with agile teams for product development.
Senior Software Engineer focused on building and maintaining endpoint services at Tanium. Collaborating with Agile teams to design and develop high - quality software solutions.
Senior Software Engineer focused on Endpoint development, building services at Tanium with an agile team. Designing, developing, and testing new product ideas with product management for feedback.
Senior Software Engineer building and maintaining endpoint services at Tanium. Collaborating with agile teams to design, develop, and test new product ideas.
Software Full Stack Engineer developing scalable data processing solutions and ETL pipelines for Fidelity's Asset Management Technology. Collaborate with teams to power critical investment decisions.
Senior Engineer leading engineering approach for complex features at Bank of America. Delivering significant business outcomes and fostering collaborative development in financial technology.
Senior Fullstack Developer for a Green - Tech Start Up in Berlin optimizing heating systems through software solutions. Collaborating with cross - functional teams to contribute to the energy transition.
Experienced Product Engineer (AI - focused) developing user - facing features for innovative AI education platform. Collaborating with design and product teams while optimizing AI systems for real user impact.