About the Role

We are looking for a Senior Full-Stack Design Engineer to join our team and help shape the future of APX (Application Performance Xcellerator)—a platform that leverages AI to detect, diagnose, and resolve performance, reliability, and cost issues in modern applications. You will play a critical role in building and refining the frontend experience and UI/UX of APX, ensuring that developers can easily interact with and benefit from our AI-driven insights.

What You Will Do

• Develop (& help design) user-centric interfaces using Next.js, React and Tailwind CSS, ensuring an exceptional developer experience
• Implement efficient API interactions and state management (React Query is a plus)
• Collaborate closely with backend engineers to optimize data flow and system performance
• Enhance the UX of AI-generated insights to make them actionable for developers
• Iterate quickly based on user feedback, usability testing, and customer requirements
• Maintain a scalable, modular front-end architecture that supports rapid development
• Work on full-stack features, contributing to both frontend and backend logic where needed
• Optimize for performance, accessibility, and security in high-traffic environments

What We Look For

• 5+ years of full-stack development experience with a strong focus on frontend engineering using the latest technologies
• Deep expertise in Next.js, React and Tailwind CSS (React Query is a plus)
• Strong UI/UX sensibilities—experience designing and implementing intuitive, accessible, and high-performance web interfaces
• Full-stack mindset—comfortable working on frontend and backend integration, particularly in TypeScript and Python
• Experience with API design and data fetching strategies (REST, GraphQL, React Query, or SWR)
• Familiarity with observability, APM, and performance tools (e.g., Datadog, PostgreSQL, Sentry)
• Experience building developer tools or platforms is a plus
• Strong problem-solving skills and ability to work autonomously in a fast-paced environment

How to Apply

Send your resume to jobs@stepchange.work. We aim to get back to submissions within 3-5 working days.

About the Role

We're seeking a fully-remote Senior Fullstack Engineer in a USA-aligned timezone to join our team building APX (Application Performance Xcellerator), an innovative platform that leverages AI to revolutionize how organizations optimize and maintain their data-intensive applications. You'll be at the forefront of creating an intelligent system that automatically detects, diagnoses, and resolves performance, reliability and cost issues while seamlessly integrating with modern development workflows.

What You Will Do

• Design and implement our multi-agent system architecture using Python and TypeScript to bring a 0-to-1 product to life
• Design, develop, and maintain a scalable, reliable, and secure backend using Python and Typescript
• Develop specialized AI agents
• Create interfaces for human experts to review and refine agent recommendations
• Build and maintain advanced integrations with APM/Cloud/Developer/Database/Observability platforms (e.g. Datadog, PostgreSQL, Github)
• Engineer feedback loops to improve agent performance based on human input
• Work with founders and frontend engineers to rapidly prototype user flows, gather customer feedback and iterate accordingly
• Troubleshoot and debug complex fullstack issues

What We Look For

• 6+ years of professional software engineering experience with Python and TypeScript, AI/LLM experience is a plus
• Proven track record of rapidly shipping high-quality backend systems
• Demonstrated commitment to excellent developer experiences and open source code
• Solid understanding of distributed systems, microservices architecture, and event-driven architectures
• Experience with databases (PostgreSQL, MySQL, MongoDB), caching systems (Redis, Memcached), and message queues (Kafka)
• Experience with developer operations, including Cloud providers such as AWS and containerization technologies
• Solid understanding of web security best practices
• Outstanding communication, leadership, and collaboration skills
• Bachelor's or Master's degree in Computer Science, Software Engineering, or equivalent experience

How to Apply

Send your resume to jobs@stepchange.work. We aim to get back to submissions within 3-5 working days.

About the Role

We're seeking a fully-remote Growth Associate to support the expansion of APX, our SaaS platform delivering Continuous Reliability for production systems. You'll be an integral part of StepChange's go-to-market strategy, working across warm and cold outbound outreach, content marketing, and paid user acquisition to drive customer growth for a cutting-edge AI solution. This is a fast-paced role where you'll collaborate closely with product, engineering, and leadership teams to position APX in a rapidly evolving market.

What You Will Do

• Execute warm and cold outbound outreach strategies to generate leads and nurture prospects
• Develop and implement content marketing initiatives to boost brand awareness and product adoption
• Manage paid advertising campaigns across multiple channels, optimizing for ROI and user acquisition
• Analyze engagement data (e.g., PostHog, Google Analytics) to refine marketing funnels and improve conversion rates
• Collaborate with product and design teams to create compelling messaging that highlights APX's AI-driven Continuous Reliability capabilities
• Maintain and optimize marketing databases, spreadsheets, and CRM tools to track leads and measure campaign success
• Stay up-to-date with industry trends, market conditions, and competitor strategies to inform growth tactics

What We Look For

• 1+ years of experience in growth marketing, business development, or a related field
• Familiarity with marketing tools (e.g., PostHog, Google Analytics, HubSpot) and spreadsheet proficiency (Excel/Google Sheets)
• Proven track record of running both inbound and outbound campaigns (email, social, paid ads)
• Excellent written and verbal communication skills, with an ability to distill technical concepts into clear value propositions
• Highly organized and data-driven, with strong analytical capabilities to measure and optimize campaign performance
• Collaboration skills and a growth mindset, comfortable working in a fast-moving startup environment
• Bachelor's degree in Marketing, Business, or related field (or equivalent experience)

How to Apply

Send your resume and a 90-second demo video showcasing your exceptional abilities and why you should be a part of the StepChange.work team to jobs@stepchange.work. We aim to get back to submissions within 3-5 working days.

About the Role

We're seeking a fully-remote Sales Engineer to act as the technical bridge between our customers and StepChange's APX platform. You'll be responsible for helping prospects and customers integrate APX's Continuous Reliability solution into their environments, clarifying requirements and integration paths, and championing APX's capabilities throughout the sales and onboarding process. Your ultimate goal is to ensure our customers achieve rapid time-to-value and renew after their trial period.

What You Will Do

• Partner closely with Sales to identify, qualify, and address technical challenges during the pre-sales process
• Lead product demonstrations and workshops, showcasing how APX's 24/7 AI agents can proactively detect and fix production issues
• Gather detailed customer requirements and propose integration architectures tailored to each customer's environment
• Coordinate and execute proof-of-concept (POC) and pilot programs, ensuring customers see real-world value quickly
• Act as a trusted advisor to customers, guiding them through the setup, configuration, and best practices for APX
• Facilitate a smooth handoff to Customer Success post-sale and stay involved to ensure a high renewal rate
• Document learnings and share customer feedback with product and engineering teams to inform feature development

What We Look For

• 3+ years in a Sales Engineering, Solutions Engineering, or related customer-facing technical role
• Hands-on experience integrating software solutions in production environments, ideally in DevOps or AI-driven platforms
• Strong understanding of observability, monitoring, and reliability challenges in cloud-native systems
• Excellent communication and presentation skills, with an ability to translate complex technical features into practical business benefits
• Ability to design and document solution architectures, including data flows and integration points
• Comfortable working in a rapidly evolving startup environment, collaborating with Sales, Product, and Engineering teams
• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)

How to Apply

Send your resume and a 90-second demo video showcasing your exceptional abilities and why you should be a part of the StepChange.work team to jobs@stepchange.work. We aim to get back to submissions within 3-5 working days.

About the Role

We're seeking a fully-remote Technical Customer Success Engineer to partner with existing APX customers and ensure they are getting the most out of our Continuous Reliability platform. In this role, you'll serve as the primary technical contact, proactively supporting users, facilitating expansions, and driving account growth. You'll work closely with product and engineering teams to incorporate feedback and help customers unlock the full potential of our AI agents that monitor and fix production issues around the clock.

What You Will Do

• Own the post-sales relationship with customers, ensuring they successfully adopt and realize value from APX's reliability features
• Partner with cross-functional teams (Sales, Product, Engineering) to identify and drive expansion opportunities within existing accounts
• Monitor account health metrics, proactively identifying risks and developing strategies to address them
• Guide customers through technical best practices, integration workflows, and configuration optimizations
• Serve as the technical subject matter expert in customer discussions and deliver product training sessions
• Collect, summarize, and communicate customer feedback to influence product roadmap and improve platform functionality
• Conduct regular account reviews, fostering deep relationships, alignment on goals, and high retention rates

What We Look For

• 2+ years in a Customer Success, Technical Support, or related post-sales engineering role
• Experience supporting SaaS platforms, ideally with observability, reliability, or DevOps products
• Strong troubleshooting skills and a track record of resolving complex technical issues in a timely manner
• Excellent communication and relationship-building skills, with the ability to explain technical concepts to both technical and non-technical audiences
• Proactive mindset with a passion for delivering top-notch customer experiences and driving account growth
• Comfort operating in a fast-paced startup environment, collaborating closely with product and engineering teams
• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)

How to Apply

Send your resume and a 90-second demo video showcasing your exceptional abilities and why you should be a part of the StepChange.work team to jobs@stepchange.work. We aim to get back to submissions within 3-5 working days.