Principal Software Developer

Job Location:

Sofia - Bulgaria

Monthly Salary: Not Disclosed

Posted on: 4 hours ago

Vacancies: 1 Vacancy

Job Summary

АboutGlobalFoundries

GlobalFoundries is a world-leading contract manufacturer for the global semiconductor industry with facilities in Dresden Singapore New York and Vermont (USA). Our products are used in various technical applications e.g. mobile communications consumer electronics automotive and more. GlobalFoundries employs around 13000 people worldwide including 300 in Sofia.

Our Sofia based team will enhance GFs scale and capabilities while strengthening competitiveness of its specialized application solutions to further position the company for growth and value creation.

Our Design and Technology Enablement teams are working on the development of a broad portfolio of semiconductor technologies ranging from 350 nm down to 12nm including FD-SOI RF High-Voltage and automotive applications.

Summaryof the Role

We are looking for an experienced Principal Software Developer to lead small-to-medium scope project delivery within our Platform Engineering team. You will design and build software that automates GlobalFoundries PDK generation and semiconductor manufacturing processes - working with minimal guidance creating requirements and being accountable for technical quality. You will train and guide junior engineers enforce software architecture best practices and leverage AI-augmented workflows to accelerate delivery across multiple process technologies.

Essential Responsibilities

Lead project execution of Features and User Stories: decompose Features into well-defined User Stories and Tasks with clear acceptance criteria; ensure traceability from Epics down to work items.

Be accountable (A in RACI) for Tasks User Stories and Bugs delivered by the team ensure deliverables meet quality compliance and Definition of Done standards.

Architect and develop PDK automation software in Python Tcl and shell scripting following clean architecture patterns (Onion Architecture Functional Core / Imperative Shell); ensure domain models accurately represent semiconductor process constructs.

Design and maintain DSLs parsers and grammars for rule-based systems (e.g. SVRF PERC) build and evolve domain-specific languages ASTs and transformation pipelines that encode semiconductor design rules into executable automation.

Drive test-driven development across the team: establish test strategies (unit integration smoke) maintain CI/CD pipeline quality gates and enforce PR review policies (2 approvals linked work items rebased merges).

Own Issue resolution and Spikes lead timeboxed investigations to reduce technical uncertainty and inform architectural decisions; solve novel and non-recurring problems.

Create and refine requirements author User Stories with acceptance criteria following Definition of Ready. Participatein backlog refinement with the Product Owner and Manager.

Train and guide JL4JL5 engineers on technical skills architecture principles domain modeling and workflow adherence; conduct code reviews with coaching intent.

Manage flow of work and leverage Azure DevOps dashboards for data-driven decisions;identifybottlenecks and drive process improvements within the team.

What We Expect from You

Technical leadership- leadproject team execution - set direction coordinate deliverables unblock the team
Minimal guidance- conduct project-based work without significant managerial input on individual tasks
Mentorship- actively develop junior engineers through pairing reviews and knowledge transfer - not just delegation
Continuous improvement - question the status quo; propose and implement workflow tooling or architecture improvements backed by data
Domain mastery- build deep understanding of semiconductor PDK structures design rules and manufacturing processes - and encode that knowledge into software

Required Qualifications

Education:B.S. or M.S. in Computer Science Software Engineering Electrical Engineering or related technical field

Experience:B.S. 45 years or M.S. 24 years or Ph.D. 12 years of relevant software development experience

Technical skills:Strong Python (includingPydanticpytest pandasfastapi)Tclor Bash/shell scripting Git trunk-based development and CI/CD pipelines

Architecture:Demonstrated experience designing software with clean separation of concerns (layered architecture domain-driven design)

Testing:Proventrack recordin test-driven development with ability to design comprehensive teststrategies

Delivery:Hands-on experience with Azure DevOps or equivalent agile platform (work items boards pipelines)

Independence:Ability to lead small teams or project streams with minimal guidance

Mindset:Ownership mentality bias for action data-driven decision-making

Preferred Qualifications

Experience in the semiconductor industry: PDK development EDA tool flows (Calibre SVRF PEX) design rule checking (DRC/LVS) or process technology enablement

Experience designing ormaintainingdomain-specific languages parsers or grammars building ASTs transformation pipelines or rule compilers (e.g. using lark sly or similar parser frameworks)

Demonstrated experience with LLMs and agentic development configuring AI coding assistants building Copilot agent skills prompt engineering or vibe-coding workflows (.github/)

Experience with domain modeling for complex technical domains (semiconductor process data rule-based systems manufacturing workflows)

Familiarity with Onion Architecture Functional Core / Imperative Shell or similar clean architecture approaches

Track record of mentoring or training junior engineers in a technical team setting

Contributions to Lean/DevOps improvement initiatives (cycle time reduction workflow standardization)

We Offer

Attractive compensation package with competitive salary performance related bonus plan and a global recognition program.
Employee Stock Purchase Plan (including 20% match and 50 seed shares for first time participants non-executive).
Individual technical or management career path opportunities supported by enhanced learning and development programs.
Healthy and teambuilding work environment with various perks:
- Additional medical service including dental and coverage of employees children
- Food vouchers and canteen discounts
- Monthly budget for Flex benefit
- Top-rated office location with recreation Spa facilities
- Discounts for Spa & Wellness Programs at NV Tower
- Regular Team Events and Celebrations
Focus on employee work-life balance:
- Hybrid working model and flexible working time
- 21 to 25 days paid vacation depending on years with the company

GlobalFoundries is an equal opportunity employer cultivating a diverse and inclusive workforce. We believe having a multicultural workplace enhances productivity efficiency and innovation whilst our employees feel truly respected valued and heard.

Information about our benefits you can find here: Experience:

Staff IC

АboutGlobalFoundriesGlobalFoundries is a world-leading contract manufacturer for the global semiconductor industry with facilities in Dresden Singapore New York and Vermont (USA). Our products are used in various technical applications e.g. mobile communications consumer electronics automotive and m...