Backend Software Engineer

Senior Software Engineer - AI Platform & Frameworks

Uberall

ABOUT THE ROLE We're looking for a senior engineer to help shape and lead the platform that other engineering teams build on top of. Our mission is to make AI agents and high-throughput backend systems easy for internal teams to adopt, and you'll own significant parts of how that platform is designed: the reusable libraries, Spring Boot starters, templates, and supporting tooling that the whole company depends on. You'll work across two worlds: * Agentic frameworks: the libraries, starters, and orchestration patterns that internal teams use to ship LLM-powered agents (Python/LangChain/LangGraph on the agent side, Kotlin/Spring Boot on the platform side), plus the supporting frameworks (evaluations, guardrails) that prove those agents actually work. * Core backend platform: Kotlin services and libraries and the shared building blocks other teams depend on. This is a high-leverage, builder-and-multiplier role. You'll make foundational design decisions, set the patterns and standards other engineers follow, and raise the bar for everyone building on the platform. Because the foundations you create sit underneath many teams' work, understanding how the company fits together, its products, domains, and the teams behind them is central to doing it well. While AI development experience is a great plus, we are looking for someone with genuine enthusiasm for the field, someone ready to dive deep into agentic systems and become our go-to expert. WHAT YOU'LL DO * Own the design of shared libraries, Spring Boot starters, and templates while making the architecture, API, and trade-off decisions that determine how easily internal teams ship on top of them. * Set the patterns and standards for our agentic frameworks, agent orchestration, tool use, memory, and the surrounding plumbing (message routing, human-in-the-loop workflows, MCP integration), and bring teams along with them. * Mentor and upskill product teams in Python-based AI agent development, including hands-on guidance with the LangChain and LangGraph frameworks. * Lead the evaluation and guardrail strategy so we can measure agent quality, reliability, and regressions. * Drive technical work across our Kotlin/Spring Boot platform and the client libraries that wrap it. * Build and maintain a clear map of the wider ecosystem (how our systems, domains, and teams connect) and use it to make foundational decisions that fit real needs across the company. * Drive adoption and multiply other engineers. Mentor teammates, review designs and code, run the docs/examples that turn a good framework into one that teams actually choose, and feed what you learn back into the platform. * Set the research direction in unfamiliar territory: identify where to invest, prototype the promising approaches, and turn the winners into production-ready foundations the rest of the org can rely on. * Raise the bar on developer experience, clear APIs, good defaults, useful errors, and documentation people actually read, and hold the platform to it. WHAT WE'RE LOOKING FOR * 7+ years of professional software engineering experience, including a track record of building libraries, frameworks, or platform components that other engineers built on. * Deep experience with Kotlin / the JVM and Spring Boot, and strong instincts for API and library design. You know what makes a foundation pleasant to build on versus painful. * Demonstrated technical leadership: you set direction, make and justify architectural trade-offs, and lift the engineers around you, with or without formal authority. * Genuine drive to lead on agentic AI and its surrounding tooling (frameworks, evaluation, guardrails, orchestration), and to become a go-to expert for the org. * The judgment to drive ambiguity to clarity: to take an open-ended or unfamiliar problem and turn it into a sound, well-scoped design others can execute. * A systems thinker who owns the bigger picture: you actively understand how the company's products, domains, and teams connect, and design for the whole, not just the module in front of you. * Excellent communication and a self-sufficient way of gathering context: you do your homework, ask sharp questions of the right people, and can explain and sell technical directions to both engineers and stakeholders. * Pragmatism about Python: Working knowledge of Python: You don’t need an extensive background in managing large-scale Python production environments, but you should be comfortable with the language. Since our tooling relies on Python/LangChain/LangGraph, we look for the ability to ramp up quickly and act as a senior lead across both our Kotlin and Python stacks NICE TO HAVE * Strong distributed systems background like messaging/queues (SQS, Redis), gRPC, event-driven architectures, including the failure modes and operational realities. * Cloud experience (AWS preferred) and infrastructure-as-code. * Experience growing a platform/DevEx practice by establishing standards, golden paths, and adoption across multiple teams. * Contributions to or maintenance of open-source libraries or frameworks. * Hands-on experience with LLMs, LangChain/LangGraph, or other agent frameworks. * Experience defining evaluation / experiment-tracking / observability strategy for ML or agent systems (e.g. Langfuse, MLflow, or similar).

Cloud Infrastructure Evangelist

Northflank

Location: UK, Ireland, or Switzerland Remote; Full-Time About Us: Northflank is a production workload platform that gives developers a self-service way to build, deploy, and scale any workload on their cloud (AWS, GCP, Azure, etc.). We are a venture-backed company that has raised over $23 million from tier-1 venture capital firms, and our platform is already being used by tens of thousands of developers worldwide.  Job Summary: We are seeking a technically-minded recent graduate to join our team as a Solutions Evangelist. In this role, you'll create comprehensive deployment guides and technical content while working directly with customers to ensure their success on the Northflank platform. This is an excellent opportunity for someone early in their career to join a high-growth startup and potentially transition into a software engineering role. Key Responsibilities: * Create high-quality technical guides and documentation showing developers how to deploy popular open-source projects on Northflank * Serve as the first point of contact for technical deployment questions from new customers * Lead technical onboarding sessions to help customers understand best practices for deploying on Northflank * Research and identify popular open-source projects that would benefit from deployment guides on Northflank * Become a product expert in Northflank's capabilities and the broader cloud-native ecosystem * Assist with technical demos during sales calls and customer meetings * Proactively identify common customer pain points and work with the product team to address them * Document and share customer success stories and deployment patterns * Build relationships with local developer communities through regular meetup attendance and participation * Gather and communicate customer feedback to the product team to influence product direction * Stay current with cloud-native technologies and Kubernetes best practices * Attend industry events and conferences to engage with the developer community (approximately twice per year) Why you should apply: * Opportunity to join a Series A startup backed by top-tier investors * Work alongside an exceptional engineering team solving complex problems * Clear path to transition into a software engineering  or solutions engineering (customer-facing) role for strong performers * Exposure to cutting-edge cloud technologies and the broader developer ecosystem * Competitive compensation package including equity * Remote-first culture with opportunities for in-person collaboration * Travel opportunities to attend major industry conferences Path to Solutions Engineering or Cloud Infrastructure:  While this role focuses primarily on technical content creation and customer success, it offers a unique opportunity to transition into a software engineering or customer-facing solution engineering position at Northflank. Strong performers who demonstrate technical aptitude will have the chance to work closely with our engineering team and potentially move into an engineering role. They’ll also have the option to become a solution engineer, where they will collaborate with sales teams to understand customer needs, design tailored technical solutions, and demonstrate product capabilities to drive successful sales engagements Minimum Qualifications: * Bachelor's degree in Computer Science or related technical field from a top university or equivalent experience * Experience with Kubernetes and containerization (through coursework, personal projects, or internships) * Exceptional written communication skills (in English) with ability to explain complex technical concepts clearly * Strong understanding of cloud computing concepts and DevOps practices * Must be located in or willing to relocate to a major metropolitan area to participate in local developer communities Benefits & Compensation: * £50-60k (or equivalent) * Equity Package * Flexible working hours and remote work options. * 31 days paid time off annually * Comprehensive benefits Diversity Statement At Northflank, we are committed to fostering a culture where every individual feels valued, respected, and supported, regardless of their background or identity. We are dedicated to providing equal treatment and opportunity throughout hiring, selection, and employment regardless of gender, race, religion, national origin, ethnicity, disability, gender identity/expression, sexual orientation, veteran or military status, or any other legally protected category. Northflank is an equal-opportunity employer.

Senior .NET developer

Growe

GROWE WELCOMES THOSE WHO ARE EXCITED TO: * Design, build, and maintain backend services using .NET (C#); * Develop and evolve microservices in a production environment; * Support existing functionality and ensure backward compatibility of releases; * Participate in task analysis, decomposition, and effort estimation; * Deliver completed tasks for testing and collaborate with QA during test phases; * Build integrations using asynchronous communication and event-driven patterns; * Work with AI integrations; * Identify performance bottlenecks and contribute to system design improvements; * Contribute to service observability (logs, metrics, traces, dashboards, monitoring); * Manage deployment configurations and manifests in Kubernetes environments; * Work in a GitOps setup and participate in deployment and operational ownership; * Collaborate with DevOps teams on infrastructure-related changes (including Terraform workflows); * Participate in on-call rotation and handle production incidents; * Identify technical debt and propose improvements; * Perform high-quality code reviews focusing on maintainability, performance, and consistency. WE NEED YOUR PROFESSIONAL EXPERIENCE: * 5+ years of commercial backend development experience with C# / .NET, .NET Core / ASP.NET Core; * 1+ year of experience with Java; * Solid understanding of microservices architecture and distributed systems; * Experience with asynchronous communication and event-driven architectures; * Experience with message brokers (Kafka or similar); * Strong experience with relational databases, especially PostgreSQL, including query optimization, indexing, performance tuning, and data modelling; * Experience writing Unit and Integration tests; * Good understanding of software design principles (SOLID, separation of concerns, testability); * Understanding of observability and monitoring in production systems; * Experience troubleshooting performance and memory issues; * Experience with AWS, Kubernetes, and Terraform will be a plus; * Experience with Prometheus, Loki, Tempo will be a plus; * Readiness to work with Java-based Kafka collectors/services containing business logic will be a strong plus; * Experience with AI integrations, LLM-based solutions, or GenAI-related tooling will be considered an important advantage. WE APPRECIATE IF YOU HAVE THOSE PERSONAL FEATURES: * Strive to learn new technologies/languages to solve non-standard challenges; * Good communication skills; * Multitasking, quick task execution; * Good team player; * Responsibility. WE ARE SEEKING THOSE WHO ALIGN WITH OUR CORE VALUES: * GROWE TOGETHER: Our team is our main asset. We work together and support each other to achieve our common goals; * DRIVE RESULT OVER PROCESS: We set ambitious, clear, measurable goals in line with our strategy and driving Growe to success; * BE READY FOR CHANGE: We see challenges as opportunities to grow and evolve. We adapt today to win tomorrow.