Software Development Engineer II

LivePerson

7h•$130,000 - $150,000•Remote

About The Position

In this role as a Software Development Engineer II BE, you will be a highly contributing member of the team building Syntrix Core — the engine behind LivePerson's synthetic customer simulation platform. Syntrix enables enterprise teams to simulate realistic customer conversations at scale, accelerating contact center testing, agent training, and AI model evaluation. You will work alongside Principal Engineers and Architects to design and build the systems that power AI-driven simulations across a multi-tenant, cloud-native architecture. You must be a collaborative team player, motivated by the challenge of building reliable AI-powered infrastructure, and eager to grow through the delivery of industry-shifting products.

Requirements

Bachelor's degree in Computer Science or related field
4+ years of software development experience
Strong proficiency in Python, including async/await patterns, type annotations, and familiarity with the Python ecosystem (uv, ruff, mypy)
3+ years of experience building microservices, RESTful APIs, and production backend systems deployed to Kubernetes
Experience with Couchbase, PostgreSQL, Firestore, or other NoSQL/document databases
Familiarity with Kafka
Experience with Docker and Kubernetes for containerized, cloud-native deployments
Strong understanding of distributed systems, including optimistic concurrency, idempotency, and stateless service design
Solid understanding of data structures, algorithm design, and object-oriented principles
Experience with Git and modern CI/CD workflows (GitLab CI preferred)
Analytical and problem-solving skills with a customer-centric mindset
Advocating and executing on automated testing strategies across all developed code

Nice To Haves

Experience with AI/ML frameworks or LLM application development — LangChain, LangGraph, or similar agent orchestration tools are a strong plus
Experience with Pydantic and Litestar (or FastAPI/Starlette)
Familiarity with LLM providers: Anthropic Claude, OpenAI GPT, Google VertexAI

Responsibilities

Learn new technologies and architectures, including work with uniform data layers, integrations with contact center providers, and new product development.
Work with leadership to bring your engineering experience to the table and ideate new features and functionality
Design, build, and maintain Python-based backend services that orchestrate AI agent workflows using LangChain and LangGraph
Contribute to the development of a multi-tenant simulation platform handling high volumes of concurrent AI-driven conversations in a public cloud environment
Integrate with contact center providers (such as LivePerson) and external LLM providers through a unified gateway abstraction
Build and extend REST APIs using the Litestar framework, following strong typing and Pydantic-based data modeling patterns
Work with Couchbase for conversation state persistence, implementing optimistic concurrency patterns (CAS locking) for correctness in multi-pod deployments
Write high-quality, well-tested code with a focus on behavior-driven unit and integration testing

Benefits

Medical, Dental, and Vision Insurance: Comprehensive plans to support your health needs.
Wellness Resources: Access to wellbeing resources and programs including our EAP plan.
Health & Mental Support: Access a confidential and free Employee Assistance Program (EAP), providing professional counseling.
401(k) Retirement Plan: To help you plan for your financial future by offering both the plan and a 4% employer match (100% match on the first 3% contribution and 50% match on the next 2% contribution)
HSA & FSA Plans: To help you plan for health related expenses on a pre-tax basis
Employee Stock Purchase Program (ESPP): Participate and receive a discount on company shares, allowing you to directly share in LivePerson's success and growth.
Additional Insurances: Basic and supplemental life insurance, Accidental Death & Dismemberment (AD&D) insurance, long-term and short-term disability insurance coverage, legal plan, identity theft protection plan, and critical illness supplemental insurance.
Development: Access to internal professional development resources.
Flexible Paid Time Off (PTO): Discretionary PTO package for flexible days off with manager approval.
Paid Public Holidays.
Generous Parental Leave Policy: Including maternity/paternity support and fertility services.
Remote-First Model: This role is fully remote (#LI-Remote), offering excellent work-life balance and flexibility. We also maintain dedicated WeWork space for those who wish to meet colleagues or collaborate in person.