Senior Java Engineer

SoftServe; Polska; Hybrid; PLN 170,000 - 250,000; Full time

Benefits offered by this job

Work from home

Hybrid work format

Health coverage

Paid time off

Job summary

SoftServe is hiring to build AI-powered shopping experiences, replatforming AI services from Java to Python and delivering scalable backend solutions. You will work with cross-functional teams to develop production-ready systems that support AI-driven customer journeys.

Responsibilities include building backend services, contributing to conversational workflows, and ensuring reliability and performance. Collaboration with data scientists, product managers, and other teams is essential.

Qualifications

• Back-end development with Java or Python.

Responsibilities

• Build and operate backend services and APIs with Java (and Python).

Skills

Java

Python

AWS

HTTP APIs

Microservices

Data modeling

Automated testing

SQL

Caching

LangGraph

LangChain

LLM integrations

Observability

Performance tuning

Tools

FastAPI

SQL

AWS

Job description

In this role, you will help build the next generation of AI-powered shopping experiences for millions of car buyers and sellers. You will help replatform AI services from Java to a modern Python-based architecture and develop conversational and agentic experiences that make vehicle discovery more personalized, transparent, and intuitive. Working closely with cross-functional teams, you will design and deliver scalable, production-ready backend solutions that support AI-driven customer journeys.

RESPONSIBILITIES

• Build and operate backend services and APIs using Java (and Python, FastAPI), and established platform patterns to power AI-driven products
• Contribute to conversational workflows built with LangGraph, including routing, handler execution, context management, guardrails, streaming capabilities, and guided shopping experiences
• Take ownership of backend features and service integrations that improve reliability, scalability, and customer experience across AI-powered applications
• Collaborate closely with engineers, product managers, designers, data scientists, and domain service teams to deliver well-aligned and impactful solutions
• Define and maintain service contracts while integrating with search, personalization, shopper profile, LLM, and other consumer platform services
• Deliver production-ready software through comprehensive testing, monitoring, performance optimization, rollout planning, and operational excellence
• Support observability initiatives, troubleshoot production issues, and participate in maintaining service health and system stability
• Work with senior engineers to evolve architecture decisions into maintainable, extensible, and reliable software solutions

REQUIREMENTS

• Professional experience building and operating backend services using Java or a similar programming language (Python)
• Strong knowledge of HTTP APIs, microservice design, service boundaries, data modeling, automated testing, and production operations
• Proficiency with AWS and cloud-based application development and deployment
• Solid experience with data access layers, SQL databases, caching strategies, and storage solutions
• Strong knowledge of data structures, algorithms, and complexity analysis
• Familiarity with FastAPI or other modern Python web frameworks
• Experience integrating distributed services through APIs, shared contracts, or schema-based communication
• Familiarity with LangChain, LangGraph, LLM integrations, agent orchestration, asynchronous processing, or stateful workflow development
• Understanding of observability, software quality practices, performance optimization, and production readiness for backend systems
• Experience with search, recommendation engines, personalization platforms, marketplaces, or other consumer-facing products is a plus
• Strong communication skills with the ability to discuss progress, tradeoffs, dependencies, and risks effectively
• Collaborative, curious, and proactive mindset with the ability to navigate ambiguity and contribute within an evolving architecture
• Upper-Intermediate English level or higher

SoftServe is an equal opportunity employer. Qualified applicants will receive consideration regardless of race, color, ancestry, ethnicity, national origin, religion, sex, sexual orientation, gender identity or expression, age, citizenship, disability, health condition, marital or family status, veteran status, or any other characteristic protected by applicable law.

About us

We are a digital engineering and technology consulting company where expertise grows alongsidepeople. For more than 30years, we have been elevating technology: helping organizations navigate complex businesschallenges by combining deepengineering knowledge with thoughtful, research-backed innovation. Our teams work across keyareas: digitalengineering, data and analytics, Сloud, and AI/ML. In each, we deliver practical, scalablesolutions rooted in realbusiness needs and measurable human impact.

You bring your perspective and ambition. We create an environment where your work meetsclarity, confidence, andpurpose.

We offer

• Work from home, from the office, or in a hybrid format that supports focus andcollaboration.
• Competitive, market-based pay, benchmarked by role andlocation — plus health coverage, paid time off, wellness support, and learningopportunities.

Approachable leaders who communicate openly, keep teams close to the strategy, andsupport long-term planning.

Advanced tech communities

Stay close to AI/ML, Cloud, Quantum Computing, IoT, andRobotics communities, with projects built on modern frameworks.

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