Senior or Mid-Level Backend Software Engineer

Tradevestgmbh — Poland · Posted ~3 hours ago

Senior

Skills

Go microservices AWS DynamoDB PostgreSQL Kafka Terraform CI/CD API testing distributed systems Golang AWS Lambda API Gateway SQS GitHub Actions

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Summary ✨ AI‑Generated

Build and scale backend microservices for a high-availability financial technology platform. You will develop services in Go, optimize DynamoDB and PostgreSQL workloads, work with event-driven messaging, improve CI/CD and observability, and contribute to architecture, testing, and technical leadership.

Highlights

Work on a high-availability fintech platform with Go, AWS serverless technologies, distributed messaging, and high-throughput databases. Senior engineers can lead architecture decisions, tackle large-scale performance challenges, and mentor teammates.

Description

Tech stack you’ll work with Core: Golang, AWS Serverless (Lambda, API Gateway, SQS)Data: DynamoDB, PostgreSQLMessaging: KafkaOps / Tooling: Terraform, Guthub Actions (CI/CD) (If you haven’t touched every tool yet, no worries — we’ll get you up to speed.) Your Mission And Responsibilities Mid Backend Software Engineer Implement new micro-services and extend existing ones in Go.Help groom user-story requirements and surface performance / scaling concerns early.Write unit, integration and API tests; review PRs.Tune data-models in DynamoDB & Postgres for low-latency, high-throughput workloads.Pair with DevOps on CI/CD and observability improvements.Participate in on-call rotation as we’re building high available fintech system Additional tasks of the Senior Design and drive high-scale, low-latency services (tens of thousands of orders / sec).Lead architecture reviews, challenge assumptions and keep tech debt in check.Partner with Product on roadmap feasibility & effort sizing.Be a mentor to less experienced colleagues Contract B2B / Employment contract Location Hybrid (Warsaw – in-office every Tuesday & Thursday) Why us? What We Offer: An experienced, welcoming team that loves clean, well-tested code.Real impact: the features you ship go straight into production for live traders.Flexible hours, modern tooling, and a fintech domain that’s never boring.Occasional work travel to Germany (Munich / Berlin)20 days PTO on B2BMultisport card Apply now! Apply now! Your Qualifications And Experience 3+ years of professional back-end experience (ideally 1 year+ in Go).Solid grasp of cloud-native design (RESTful APIs, event-driven patterns).Working SQL and NoSQL skills; know when each shines.Comfort diagnosing performance bottlenecks in distributed systems.Ability to work on-site in Warsaw twice a week (Tue & Thu) and remotely otherwise. Nice to have Exposure to serverless architectures on AWS.Experience with Kafka or another high-volume message bus.Knowledge of automated trading, market data, or FIX/crypto exchanges.Familiarity with Infrastructure-as-Code (Terraform or CDK). About Us Tradevest is a leading FinTech company offering an innovative platform for securities and cryptocurrency trading, specifically tailored for institutional clients. In Germany, Tradevest holds BaFin licenses as a securities institution, ensuring full regulatory compliance. With our cutting-edge development hub located in Warsaw, Tradevest Polska Sp. z o.o. we drive the technical innovation behind our products. Additionally, through our brand WAWEX, we operate a state-of-the-art cryptocurrency exchange, providing a seamless and secure trading experience. Our mission is to empower institutional traders with advanced tools and technologies that redefine the trading landscape. WAWEX is a cutting-edge fintech platform at the forefront of the digital finance revolution. Empowering financial institutions, brokers, and banks, WAWEX delivers seamless access to over 75 cryptocurrencies, combining state-of-the-art security with unparalleled market depth. Through innovative tokenization and real-time market insights, WAWEX is shaping the future of trading. With robust API integrations and 24/7 availability, this dynamic platform is designed for institutions ready to embrace the fast-paced world of digital assets and unlock limitless opportunities in global finance.