Staff Software Engineer
Netspring
At Optimizely, we're on a mission to help people unlock their digital potential. We do that by reinventing how marketing and product teams work to create and optimize digital experiences across all channels. With Optimizely One, our industry-first operating system for marketers, we offer teams flexibility and choice to build their stack their way with our fully SaaS, fully decoupled, and highly composable solution.
We are proud to help more than 10,000 businesses, including H&M, PayPal, Zoom, and Toyota, enrich their customer lifetime value, increase revenue and grow their brands. Our innovation and excellence have earned us numerous recognitions as a leader by industry analysts such as Gartner, Forrester, and IDC, reinforcing our role as a trailblazer in MarTech.
At our core, we believe work is about more than just numbers -- it's about the people. Our culture is dynamic and constantly evolving, shaped by every employee, their actions and their stories. With over 1500 Optimizers spread across 12 global locations, our diverse team embodies the "One Optimizely" spirit, emphasizing collaboration and continuous improvement, while fostering a culture where every voice is heard and valued.
Join us and become part of a company that's empowering people to unlock their digital potential!
To get a sneak peek into our culture, find us on Instagram: @optimizely
Introduction
We are looking for a Staff Software Engineer to join one of our core CMS product teams in London, helping shape the future of Optimizely’s digital experience platform.
These are exciting times at Optimizely. We are an AI-first company, continuously evolving our CMS and DXP offerings, and pushing the boundaries of what modern SaaS platforms can deliver. Our engineering teams are passionate about building scalable, extensible products that power some of the world’s leading digital experiences.
As a Staff Engineer, you will operate as a technical leader and force multiplier, driving architectural direction, enabling teams to deliver at scale, and influencing engineering excellence across teams.
What You'll Do
- Act as a technical leader across your team and adjacent teams, contributing from discovery through architecture, implementation, and delivery
- Own and drive large, complex initiatives (epic-level) end-to-end, aligning technical execution with business outcomes
- Partner closely with Product Managers, Designers, and other stakeholders to shape solutions that deliver maximum customer value
- Guide architectural decisions across distributed, scalable SaaS systems, balancing performance, cost, and maintainability
- Champion engineering excellence, improving development practices, testing, and system reliability across teams
- Mentor and coach engineers, helping raise the bar across the organization
- Contribute to cross-team technical strategy, influencing platform evolution beyond your immediate team
- Leverage modern tooling, including AI-assisted development (e.g., GitHub Copilot), to improve productivity and quality
Knowledge and Experience
- 8–12+ years of professional software engineering experience, with recent experience operating at a senior or staff level
- Strong experience building scalable backend systems, ideally with C# and .NET (ASP.NET)
- Solid understanding of distributed systems, APIs (REST/GraphQL), and SaaS architectures
- Experience contributing to architecture and system design across multiple teams or domains
- Comfortable working across the stack when needed (frontend experience with JavaScript/TypeScript/React is a plus, not the core focus)
- Proven ability to lead without authority, influence decisions, and act as a multiplier for other engineers
- Strong communication skills and ability to collaborate across functions and geographies
- Experience working in agile, fast-paced environments with a strong sense of ownership
Nice to Have:
- Experience with CMS, DXP, or content-driven platforms
- Experience building and maintaining SaaS products at scale
- Familiarity with cloud platforms (Azure preferred)
- Experience designing and maintaining SDKs or extensible APIs
- Exposure to modern frontend architectures (e.g., micro-frontends)
- Experience with containers and orchestration technologies
Optimizely is committed to a diverse and inclusive workplace. Optimizely is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.
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