Lead Full-Stack Engineer (NestJS and React)

About the project:

Our customer is a full quote-to-cash ERP/PSA used by field service companies (system integrators) that install and maintain physical equipment - AV systems, security cameras, fire alarms, HVAC. The platform covers:

Sales: opportunities, quoting, ordering

Projects: project management, resource scheduling

Service: dispatch, ticketing, field technician management

Finance: accounting, GL, invoicing, purchasing (the financial core is central to everything)

Reporting: data sources, dashboards, report builder

All modules feed into a single financial core. The platform is sold as an all-or-nothing product today - no modular subscriptions.

You will work closely with stakeholders to analyze the current solution, identify technical risks, document findings, and provide recommendations that will shape future development. This is an excellent opportunity for an experienced engineer who enjoys solving complex technical challenges, investigating legacy systems, and making architectural decisions.

Requirements

7+ years of commercial software engineering, with Backend and Frontend development using TypeScript

Hands-on experience with NestJS and React

Hands-on experience with REST API and GraphQL protocols

Proven track record leading engineering teams - technical mentorship, code reviews, architectural decisions.

Strong experience working with complex backend systems (beyond CMS platforms or simple websites). Experience with ERP systems is a significant advantage.

Solid understanding of distributed and microservices-based architectures.

Strong expertise with relational databases (MySQL, PostgreSQL, or similar), including schema design, query optimization, and performance analysis.

Experience working with stored procedures, database functions, and complex SQL is highly desirable.

Experience with Apache Kafka

Experience analyzing large legacy codebases and understanding complex business logic.

Hands-on experience with reverse engineering existing systems is a strong plus.

Experience participating in system design, architecture discussions, and technical decision-making.

Strong analytical mindset and excellent problem-solving skills.

Ability to work independently with limited project documentation.

Hands-on experience with Azure Cloud

Upper-Intermediate or higher English level.

Experience working in Agile / Scrum / Kanban

PHP and MSSQL stored procedures experience is a significant advantage.

Nice to Have

Experience with AI-assisted development tools (Copilot, Claude, Cursor)

Background in SaaS, multi-tenant platforms, or large-scale B2B portals

Responsibilities

Lead technical delivery, owning architecture and code quality

Design, develop, and review TypeScript code for backend and frontend systems

Align with Client engineering leadership on technical direction and delivery

Break down epics into technical tasks, drive estimation and sprint planning

Mentor engineers through pair programming, code reviews, and technical guidance

Drive AI adoption by onboarding teammates to AI tools and practices

Identify and unblock technical risks early; escalate delivery concerns proactively

Participate in Agile ceremonies and Client governance cadence

Contribute to Roadmap planning, risk identification, and dependency management

We offer*:

Flexible working format - remote, office-based or flexible

A competitive salary and good compensation package

Personalized career growth

Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

Active tech communities with regular knowledge sharing

Education reimbursement

Memorable anniversary presents

Corporate events and team buildings

Other location-specific benefits

• not applicable for freelancers