This job offer is no longer available
On Senior Backend Engineer (Typescript)
On
- London, England, United Kingdom
- London, England, United Kingdom
About
Your Mission
You will shape and evolve the customer communication platform by providing APIs, real‑time events and documentation to reduce the cognitive load and enable multiple stream‑aligned teams to rapidly deliver premium, personalized experiences across all consumer touch points
You will lead the design and rollout of complex systems, guide architectural decisions across teams through RFCs, and ensure our platforms are built for long‑term growth and operational excellence
You will act as an expert in the given technology area, leverage best in class engineering practices including continuous integration and deployment, code reviews, high test coverage and allowing for observability
You iteratively deliver high‑value, high‑quality solutions while balancing speed, scalability, and reliability
You collaborate effectively across diverse teams and stakeholders, driving alignment between product, design, and engineering
You will engage in the engineering community by sharing knowledge, mentoring your team mates, receiving / providing feedback or growing our team by supporting the hiring
You act as a mentor and technical reference for senior engineers, fostering a culture of learning and growth
Your Story
You have 8+ years of backend experience designing, building, testing, releasing, maintaining, scaling, and evolving complex distributed systems with a strong problem‑solving mindset striving for excellence and taking full accountability across teams
You are fluent in Ruby and Node.js (TypeScript and NestJS as a plus) ecosystems and experienced with API design (GraphQL/REST)
You bring strong experience with event‑driven systems (Kafka, RabbitMQ or similar), distributed data architectures and delivering resilient, observable APIs (New Relic)
You have mastered automated testing, TDD, and performance debugging tools, you are hands‑on with operating the infrastructure on AWS or GCP and container orchestration (Kubernetes)
You have led architectural initiatives, guided system design through RFCs, and influenced engineering strategy beyond your immediate team
You lead and coach teams through incident response, root cause analysis, and long‑term reliability improvements
You communicate with clarity and empathy, guiding stakeholders through complex trade‑offs and aligning multiple teams around shared goals
You mentor engineers and influence organizational culture, creating an environment of feedback, growth, shared accountability, and technical excellence
You think product‑first - connecting technical decisions to customer and business outcomes, applying holistic thinking and delivering for impact using experimentation
Attributes of a Successful Candidate
Action‑Oriented: Anticipates opportunities that advance organizational goals and mobilizes others to act with urgency and clarity
Organization‑Focused: Builds trusted relationships across teams, creating alignment and shared purpose
Alignment‑Driving: Connects technical decisions to organizational strategy and ensures consistent execution across domains
Leads through Ambiguity: Provides clarity and confidence across teams in uncertain or high‑pressure situations
Develops Others and Self: Models continuous learning while fostering growth across the organization through mentoring, coaching, and structured feedback
Meet The Team As you might expect from a running brand, the wider E‑Commerce team at On is a fast‑paced place to be. You will work in the diverse Customer platform team as part of Commercial Technology. You will collaborate with roles including Software Engineers, QA Engineers, Product Managers, Data Analytics, Marketing and others of stream‑aligned or platform teams that are located in Berlin, Zurich and London.
What We Offer On is a place that is centered around growth and progress. We offer an environment designed to give people the tools to develop holistically - to stay active, to learn, explore and innovate. Our distinctive approach combines a supportive, team‑oriented atmosphere, with access to personal self‑care for both physical and mental well‑being, so each person is led by purpose. On is an Equal Opportunity Employer. We are committed to creating a work environment that is fair and inclusive, where all decisions related to recruitment, advancement, and retention are free of discrimination.
#J-18808-Ljbffr
Languages
- English
Notice for Users
This job was posted by one of our partners. You can view the original job source here.