The team at Jellyfish is changing how product development happens, helping engineering teams learn how to work together and communicate more effectively. We're seeking a Senior Backend Engineer who's passionate about building robust data pipelines, integrating with third-party APIs, and working with large-scale data infrastructure. Ideally, you're performance-minded and have experience with modern ETL patterns, workflow orchestration engines, and building API clients. This is a great opportunity to be a member of an exceptional engineering organization with high agency: where you can help shape the features your team builds and how your team builds them. If this sounds exciting, we'd love to hear from you! What you'll do: - Build and maintain data pipelines for storage, transformation and export - Develop integrations with third-party tools (Jira, GitHub, GitLab, incident management tools, AI coding assistants, etc.) - Create and maintain API clients to ingest data from external services - Manage infrastructure as code using Terraform - Build workflow orchestration for near-real-time and batch data processing - Design and implement data export pipelines - Develop internal tooling and agentic workflows to accelerate internal development - Provide technical expertise within your team and across the organization - Communicate effectively about project status and technical issues About you: - You know how to build and scale data pipelines - You are a strong programmer with extensive Python experience - You have experience building and maintaining integrations with third-party APIs - You're comfortable with infrastructure as code (Terraform, CloudFormation, or similar) - You have familiarity with workflow orchestration tools (Prefect, Airflow, Dagster) - You are great at asking questions, figuring out what needs to be done, building consensus, and executing - You consider both the needs of the user and the needs of the business when designing a solution - You love learning new things and sharing knowledge with others - You have strong communication skills and enjoy working as part of a team - Located in EST or CST time zone Bonus points if: - You have worked at a rapidly scaling startup before and loved it - You have experience with Delta Lake and lakehouse architectures - You've built integrations with developer tools (Jira, GitHub, GitLab, CI/CD systems) - You have experience with AI/LLM tool integrations (Claude, Copilot, etc.) - You bring experience and opinions about the different ways engineering teams can work and the tools they use A list of job experiences and qualification requirements is great, but humility, a performance-driven attitude, and a team-player approach are most important to us. We love to have fun and win in the process. We only hire people who have a passion for building great companies in an environment where a sense of humor is a must. Occasional travel may be required. Applicants must be authorized to work for any employer in the US. We are unable to sponsor or take over sponsorship of an employment visa at this time. Let’s talk about us! This is all about you, but you want to know a little about us. Jellyfish enables leaders to effectively build AI-integrated engineering teams, align engineering decisions with business initiatives and deliver the right software efficiently and on time. AI tools alone won’t transform your org—Jellyfish shows you what’s working, what’s not, and how to build high-performing teams that know how to use AI the right way.

•Codificar a partir de especificações; •Planejar o próprio trabalho em nível de tarefa; •Reportar progresso do trabalho em nível de tarefa; •Compreensão de técnicas de inspeção de programa e de código.

• Design and evolve intelligent workflow and automation solutions in an AI-native development environment • Define architectural standards, patterns, and best practices for workflow platforms • Leverage AI tools (Claude, Copilot) to accelerate design, code generation, and documentation • Design scalable, secure, and maintainable workflow solutions • Define AI-assisted development patterns for workflow behavior and generated code • Architect solutions across open-source workflow engines and custom services • Design event-driven and service-based architectures using Java-based ecosystems • Contribute to a Workflow CoE, driving governance, reusability, performance, and AI-native standards • Collaborate across product, infrastructure, security, data, and AI teams • Support CI/CD, DevSecOps, and cloud-native deployments • Provide technical leadership, code/design reviews, and enforce engineering rigor

Role Description You’ll join the engineering group delivering across three of our most visible program areas: the Managed Enterprise Services (MES) suite — spanning CCT, CBPC, Document Center, and EAC — the CBA side of AIX, and our Digital Convergence initiative (CVG / MA360). These are interconnected, business-critical applications, so the backend work here is high-leverage and highly visible. What makes this role compelling is how we build, not just what we build. We’re an early adopter of Spec-Driven Development (SDD) using OpenSpec: every change begins from a clear, version-controlled specification that the team — and our AI coding assistants — agree on before a line of code is written. Engineers here shape the spec, not just the implementation, which means less rework, a traceable decision history, and consistent patterns across a large, evolving codebase. As a backend engineer, you’ll own .NET services end-to-end — from authoring the spec to shipping and operating production code — while mentoring teammates and helping mature our SDD practice. If you enjoy modern .NET at real scale, an AI-augmented workflow, and being able to point to systems that matter, this is a strong fit. Qualifications - 5–7 years of professional backend software development. - Strong, demonstrable proficiency in C# and the .NET stack (ASP.NET Core Web API). - Experience designing REST APIs and working with relational databases (SQL, EF Core). - Working knowledge of CI/CD, automated testing, version control (Git), and at least one cloud platform (Azure preferred). - Comfort with — or strong aptitude for — spec-first / specification-driven workflows; direct OpenSpec or comparable SDD experience is a plus. - Strong collaboration and communication skills. - Experience with AI-native development tools, such as OpenSpec or comparable frameworks (e.g., GitHub Spec Kit). Requirements - Author and refine OpenSpec artifacts — proposals, requirement specs, design notes, and task breakdowns. - Design, build, and maintain backend services and APIs in C# / ASP.NET Core, including data access with SQL and Entity Framework Core. - Use AI coding assistants effectively, driven by approved specs, to accelerate delivery without sacrificing quality. - Write automated tests and ship through CI/CD pipelines; support deployment and operation of services in the cloud. - Review peers’ specs and code, mentor less-experienced engineers, and help mature the team’s SDD practice. - Collaborate with product, QA, and other engineering teams to translate ambiguous requirements into precise, buildable specifications. - Collaborate with cross-functional teams to design, develop, and integrate innovative software solutions that align with business needs. - Conduct analysis of system requirements and customize applications to ensure optimal functionality. - Assist with the software update process for existing applications and roll-outs of software releases. - Mentor junior engineers, fostering a culture of technical excellence and shared knowledge within the team. - Engage with Quality Assurance to verify that software meets technical specifications and deliver high-quality, reliable applications. - Troubleshoot and resolve complex technical issues in software applications and systems. - Synthesize market research and industry trends to inform project strategies and enhance product offerings. - Conduct training sessions for operational staff to ensure effective use of internally developed applications. - Consistent exercise of independent judgment and discretion in matters of significance. - Regular, consistent and punctual attendance. - Other duties and responsibilities as assigned. Benefits - Array of options for physical, financial, and emotional support. - Expert guidance and always-on tools personalized to meet individual needs. Education - Bachelor's Degree preferred; combination of coursework and experience or extensive related professional experience may be considered. Certifications - Relevant Work Experience: 5-7 Years. Company Description Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.