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Marios PassarisMP

Marios Passaris

Lead Software Engineer

€695/day
Guildford, GB
8-15 years

Average response time: 1 hour

About Marios

A motivated software engineer with a particular interest in new technologies. Extensive programming experience in Go (Golang), ReactJs and Java. Interested in working and build teams that grow and expand skills. Enthusiastic and eager to develop creative solutions. Goal-driven and always ready to take on new technical challenges. Responsible, zest to learn and further expand my know-how as part of a dynamic project team.
  • English

    Native or bilingual

  • Greek

    Native or bilingual

  • German

    Basic

Can work on-site
Guildford (up to 50km)

Experience

  • NatWest Cushon
    Lead Software Engineer
    April 2025 - Today (1 year and 2 months)
    London, United Kingdom
    Lead Software Engineer at NetWest Cushion, responsible for designing, building, and scaling high-performance distributed systems using Go. Drives the adoption of cloud-native practices, leveraging Docker and Kubernetes to deliver resilient, containerized applications. Leads and mentors cross-functional development teams, setting technical direction, ensuring best practices, and fostering a culture of collaboration and continuous improvement. Plays a key role in architecture decisions, CI/CD optimization, and delivering reliable, production-ready solutions aligned with business objectives.
    Kubernetes Docker Technical project management
  • Nima Project Ltd
    Co-Founder
    January 2016 - Today (10 years and 5 months)
    London, United Kingdom
    The Nima Project is a forward-thinking digital creative agency focused on crafting impactful and scalable digital experiences. We help businesses shape their unique identity through a combination of strategic thinking, creative design, and modern technology.

    From initial concept to final delivery, we partner closely with our clients to understand their vision and translate it into a distinctive digital presence. Our expertise spans visual branding, creative web design, custom web development, backend services, and native applications—ensuring every product is both beautiful and technically robust.

    On the technical side, we specialize in building high-performance, scalable systems using a modern stack including Go, Next.js, React, gRPC / gRPC-Web, and Dgraph. Our development approach emphasizes clean architecture, performance, and maintainability.

    We combine creativity with engineering excellence, using tools like ClickUp to ensure transparent, efficient collaboration and delivery. Whether working with startups or established businesses, our goal is to turn ambitious ideas into meaningful digital solutions that drive real growth.
    GO Next.js React.js Product Development
  • Dexory
    Lead Software Engineer
    April 2024 - January 2025 (9 months)
    London, United Kingdom
    Dexory is at the forefront of robotic and data-driven solutions, where I led diverse teams across various domains as a Lead Fullstack Engineer.
    • Customer-Facing Applications: Developed web applications using React and Ruby on Rails to visualize metrics like storage occupancy, lost/wrong items, and statistical insights for customers.
    • Optimizing Scanning Procedures: Collaborated with Go and C++ engineers to optimize scanning methods for point cloud data (3D images). Designed solutions for data compression, filtering unsuitable information, and offloading tasks based on robot bandwidth constraints.
    • Robot and Fleet Management: Led a team in building Robot Manager (React & Go) for on-device operations and Fleet Manager for cloud-based monitoring and control. Integrated Fleet Manager with Slack (alerts) and Grafana (incident metrics). Designed for horizontal scalability and geo-location deployments. Used Postgres, Memcache, and AWS S3 for data storage and retrieval.
    • Cross-Functional Integration: Played a pivotal role in integrating multiple microservices to ensure seamless data flow between Robot Manager, Fleet Manager, and customer-facing applications.
    • Leadership & Collaboration: Organized and led architectural meetings to align cross-functional teams with project goals. Acted as a bridge between teams and Product Owners, aiding in sprint planning and ensuring the delivery of high-quality outcomes.
    My time at Dexory allowed me to refine my leadership and architectural design skills while collaborating with teams from diverse technical backgrounds to create scalable, innovative solutions.
    Ruby on Rails PostgreSQL React.js GO

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Education

  • BSc Computer Science
    National and Kapodistrian University of Athens
    2015
  • Apolytirion of Lyceum
    Geitonas School
    2011

Certifications

  • ISO 27001 (Information Security Management System – ISMS
    TÜV AUSTRIA Group
    2025
    Cloud & Infrastructure Security (Docker/Kubernetes) Audit Preparation & Compliance Support Security Risk Assessment & Mitigation Third-Party & Vendor Risk Management Policy & Documentation Design ISMS Implementation & Optimization Security-by-Design (DevSecOps mindset) Continuous Security Improvement (Agile/Lean) Access Control & Identity Management Incident Response & Recovery Planning

Skill set

Categories