Job Description

About the Role

We are looking for a Senior / Staff Backend Engineer in Poland to join Inflect as a contractor on our Engineering team and take strong technical ownership of key backend services. This is a hands-on, execution-focused role for an experienced engineer who enjoys building, scaling, and improving production systems that directly power the business.

This role is suitable for a senior engineer operating at senior or early staff level, with strong technical ownership and autonomy.

You will work in a small, senior engineering team, where each engineer has significant ownership, autonomy, and direct impact on the product. You will have a real influence on backend architecture, technical direction, and tooling choices, while staying closely aligned with product and business goals.

This role does not involve people management or ownership of legacy systems - it is focused on building, scaling, and improving modern backend services.

About Inflect

Inflect builds and operates an IT infrastructure marketplace, connecting buyers and service providers through a single, product-driven platform - not a software house or agency.

We manage complex marketplace workflows at the intersection of cloud infrastructure, network services, and large-scale compute (CPU/GPU). Our marketplace integrates directly with service providers and enables buyers to discover, compare, and transact infrastructure services in a frictionless way.

Our engineering culture values pragmatism, ownership, and fast feedback. We focus on delivering real business value over rigid process frameworks or excessive ceremony.

How You’ll Work

• Primary working hours are in the Polish (CET) time zone, with regular collaboration and overlap with engineers and stakeholders in the United States
• Hybrid work model: 1–2 days per week in our Warsaw office is preferred
• Daily communication in English with US-based engineers and partners
• Close collaboration with Product, Backend, and Infrastructure-focused teammates

Responsibilities

• Take technical ownership of key backend services that power Inflect’s marketplace and service provider integrations
• Design, implement, and scale backend systems that support onboarding and integration of new groups of service providers
• Actively collaborate with Product and Engineering leadership to translate marketplace and integration requirements into pragmatic, production-ready technical solutions
• Design and implement distributed backend services with a strong focus on:
• reliability
• throughput and latency
• resiliency
• delivery speed
• and cost efficiency
• Rapidly validate ideas, build production-ready solutions, and iterate based on real usage and feedback
• Write robust, well-structured code with full test coverage to ensure reliability and long-term maintainability
• Proactively identify architectural, performance, and scalability risks and address them before they impact the business
• Mentor other engineers through code reviews, technical discussions, and knowledge sharing, helping raise overall engineering quality
• Maintain empathy for end users while staying focused on delivering measurable business value

Definition of Success (First 6 Months)

Success in this role after approximately 6 months means:

• Successfully delivering backend integrations with a new group of service providers, enabling them to operate within Inflect’s marketplace
• Ensuring that core marketplace flows (e.g. provider onboarding, offer availability, transactional or pre-transactional workflows) are reliable, scalable, and production-ready
• Taking ownership of the backend systems that support these flows and being accountable for their correctness, stability, and performance
• Becoming a trusted technical partner for product and engineering leadership in the evolution of the marketplace
• Improving delivery speed and technical confidence of the team through better tooling, CI/CD, and pragmatic engineering practices

Minimum Requirements

• 7+ years of professional backend development experience, including 5+ years of production experience in Go
• Strong experience designing, building, and operating backend systems at scale in cloud environments
• Hands-on experience with relational and in-memory data stores such as Postgres and Redis
• Experience deploying and operating services in AWS, GCP, or another major public cloud
• Ability to communicate technical concepts clearly and collaborate effectively across teams
• Native-level Polish (spoken and written) and strong professional English for daily collaboration with US-based engineers
• Familiarity with JIRA and Confluence for day-to-day workflow management

Highly Valued / Nice-to-Have Experience

These skills are highly valued, but not required. They will significantly accelerate your impact at Inflect:

• Marketplace or transaction-heavy systems
• Experience building platforms that connect multiple parties, handle pricing logic, or manage marketplace-style workflows.
• AI-enabled backend systems
  • Experience building and shipping LLM-powered features (chatbots, internal AI tools) and designing multi-agent workflows (planner/worker, master-agent orchestration, tool delegation, memory strategies)
  • Practical prompt/context engineering (structured outputs, context limits, prompt versioning)
  • Ability to debug and improve AI quality in production (hallucinations, retrieval relevance, logging, evals)

• Infrastructure or networking domain exposure
• Familiarity with cloud infrastructure, network services, or large-scale compute systems (CPU/GPU), even at a conceptual or integration level

What You Won’t Be Doing

• No people management
• No ownership of large, legacy monolithic systems
• No rigid, ceremony-heavy process frameworks