Principal Full-Stack Engineer Job at Sigma Software Group (Warsaw)

Principal / Senior Full-Stack Engineer (AI Agents)

We are hiring 5–10 Full-Stack Engineers over the next 12 months to accelerate th...

Location

United States , San Francisco

Salary:

225000.00 - 275000.00 USD / Year

G2i Inc.

Expiration Date

Until further notice

Requirements

10+ years of engineering experience
Strong experience in B2B SaaS environments
Full-stack background with a focus on TypeScript
Cloud experience with GCP (preferred) or AWS
Full-stack TypeScript (frontend + backend)
Strong system design and architectural skills
Experience with IaC, CI/CD, deployment workflows
Familiarity with LLMs and genuine enthusiasm for AI innovation
Extreme ownership: Takes responsibility for outcomes end-to-end
High agency: Proactively finds and solves the right problems

Job Responsibility

Design, develop, and maintain full-stack features using TypeScript
Build and optimize AI agents using state-of-the-art LLMs
Work with GCP (primary) or AWS, infrastructure-as-code, and deployment pipelines
Take full ownership of projects—from ideation and architecture to implementation and maintenance
Develop reusable tools, prompts, and frameworks for rapid agent creation
Proactively identify problems, propose solutions, and execute independently
Contribute to architectural decisions and engineering best practices

What we offer

Meaningful equity, benchmarked against Pave and Color
Health, dental, and vision insurance (basic plan fully covered)
Commuter benefits (parking & train)
Catered meals and office snacks
High-impact role within a small, senior team

Fulltime

Principal Engineer Software (Full-Stack)

Bring your backend java engineering skills to work on the latest cloud software/...

Location

United States , Santa Clara

Salary:

147000.00 - 237500.00 USD / Year

Palo Alto Networks

Expiration Date

Until further notice

Requirements

BS/MS in Computer Science/Engineering with 8+ years or equivalent experience or equivalent military experience required
Solid experience of backend development using Java, Go, Spring Boot, J2EE, and cloud-native platforms like GCP or AWS, Kubernetes and Docker
Strong experience and knowledge with micro services, distributed systems, and performance optimization
Experience with Agile development process and embrace Agile methodologies
Strong believer of automation test and strive for higher code coverage
Can-do attitude on problem-solving, quality and ability to execute

Job Responsibility

Execute on the software development strategy to improve our dynamic highly distributed system
Understand and implement software development/engineering lifecycle concepts to drive features from conception to delivery
Collaborate closely with the product management, architects and devops to achieve quality releases
Work hand-in-hand with customer support, documentation and downstream teams to enable customer success
Make appropriate trade-offs to optimize time-to-release while maintaining performance and scalability requirements
Be able to clearly communicate goals and desired outcomes to internal project teams
Interview, mentor and coach new team members

Fulltime

Member of Technical Staff, Principal Full Stack Engineer - Copilot Applications

As Microsoft continues to push the boundaries of AI, we are on the lookout for p...

Location

United States , Mountain View

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
Strong full-stack fundamentals across frontend (React, TypeScript) and backend systems
Proficiency in Python or similar languages for backend development
Experience building scalable web APIs and services
Comfort with ambiguity and the ability to move fast in loosely-defined problem spaces
Taste for great product experiences and a drive to ship work that matters

Job Responsibility

Create breakthrough experiences that redefine what an AI companion can do
Build across modalities—voice, vision, text, and action—to make Copilot feel seamless and alive
Own features end-to-end, from concept through production, at scale
Collaborate with applied AI researchers to bring cutting-edge model capabilities to users
Ship experiments rapidly, learn from usage, and iterate toward experiences that feel like magic
Work across team boundaries on problems that span the entire product

Fulltime

Principal Full Stack Software Engineer

As a Principal Software Engineer, you will collaborate with engineering teams an...

Location

United States , Johnston; Phoenix; Iselin; Westwood

Salary:

127520.00 - 191280.00 USD / Year

Citizens Bank

Expiration Date

Until further notice

Requirements

7+ years of hands-on software development experience, including full-stack development
Proven experience leading and mentoring software engineers
Mastery of multiple programming languages
Required expertise in Angular/TypeScript
Experience building microfrontends and working with Single SPA
Solid understanding of RESTful APIs, secure coding practices, and vulnerability remediation
Experience with CI/CD pipelines and containerized deployments
Strong communication and interpersonal skills
Cloud certifications such as AWS Solutions Architect
Familiarity with data structures such as linked lists, dictionaries, arrays, and custom object creation

Job Responsibility

Lead full-stack development efforts with a strong emphasis on frontend engineering using Angular and TypeScript
Build microfrontends using the Single SPA framework to support modular and maintainable UI architecture
Design, develop, and maintain scalable microservices using Spring Boot (Java) and responsive, dynamic web applications using Angular
Collaborate with cross-functional teams to define, design, and ship new features, ensuring alignment with enterprise architecture principles
Infuse quality of service characteristics such as scalability, manageability, and maintainability into distributed service-based frameworks
Ensure code quality and security using tools like SonarQube, Fortify, and Nexus IQ
Troubleshoot and resolve issues efficiently, maintaining high standards of performance and reliability
Participate in Agile ceremonies and contribute to sprint planning, retrospectives, and continuous improvement
Mentor and guide software engineers, fostering a culture of innovation, accountability, and technical excellence

What we offer

competitive pay
comprehensive medical, dental and vision coverage
retirement benefits
maternity/paternity leave
flexible work arrangements
education reimbursement
wellness programs

Fulltime

Principal Engineer Software (Full Stack)

As a Principal Full Stack Engineer on the Prisma Access team, you will be instru...

Location

India , Pune

Salary:

Not provided

Palo Alto Networks

Expiration Date

Until further notice

Requirements

Bachelor’s/Master’s degree in Computer Science or a related equivalent field
Minimum of 10 years of professional programming experience with a demonstrated track record of building complex, data-driven web applications
Expert-level proficiency with ReactJS and modern JavaScript/TypeScript ecosystems in high-scale production environments
Strong professional experience in at least one backend language such as GoLang, Python, or Java, with a deep understanding of asynchronous programming and concurrency
Proven experience designing and building scalable microservices and modular architectures for complex systems
Hands-on experience with cloud-native technologies, including Docker, Kubernetes (K8s), and cloud provider services (e.g., AWS Lambda, S3, or DynamoDB)
Proven ability to lead technical initiatives and collaborate effectively with cross-functional teams in a dynamic, fast-paced setting

Job Responsibility

Design and implement scalable, modular full-stack architectures, ensuring seamless data flow between high-performance frontend interfaces and robust backend microservices
Actively participate in the full product development lifecycle, from API contract definition and schema design to implementation, automated testing, and CI/CD deployment
Develop and maintain high-concurrency UI web services and RESTful/gRPC APIs that integrate with public (AWS, GCP) and private cloud infrastructures
Optimize data fetching, caching, and state management strategies to handle massive security datasets from distributed systems like BigQuery or Snowflake
Proactively collaborate with design, product, and platform engineering teams to ensure frontend requirements are supported by backend capabilities
Continuously identify, suggest, and implement improvements to development processes, including containerization (Docker/K8s) and server-side performance tuning

Fulltime

Principal Engineer - Order Management

The Principal Engineer works across all squads and chapters in the Sub-Domain, w...

Location

Australia , Surry Hills

Salary:

Not provided

Woolworths Supermarkets

Expiration Date

Until further notice

Requirements

Possessing strong technical and leadership skills, you'll translate business strategy into cohesive application, information, and technology engineering functions, utilizing excellent communication and influencing skills to engage effectively with senior business and technology stakeholders.
Experienced engineering leader with 8+ years in solution design, API management, and transformation programs, adept at working with both COTS and custom applications.
Proficient in cloud-native and web technologies, including Kubernetes, REST APIs, asynchronous design patterns, and modern .NET web frameworks.
Experience in Agentic Development Life Cycle and workflows
Skilled in cloud infrastructure (IaaS) with Terraform, network design (subnets, access control), and troubleshooting full-stack performance bottlenecks.
Strong grasp of data modeling, including abstract, logical, physical, data, and state models, with exposure to SQL (MS SQL Server, MySQL) and NoSQL performance tuning.
Expert in large-scale web eCommerce (preferably Retail), agile methodologies, event-driven architecture, and cloud environments like Google and Azure.

Job Responsibility

Collaborate with the Domain Principal Architect to define the target architecture and with Engineering Practice leads to align future engineering capabilities with business strategy.
Helping the Heads of Engineering to validate the quality and consistency of engineering deliverables for the Sub-Domain
Validating that a pragmatic path is taken towards the future state architecture for the Domain
Ensuring that the most complex and highest impact technical decisions are made in an informed and well thought through way
Ensuring that Chapter teams effectively engage with key engineering teams outside the Domain such as Cyber Security and Platform Engineering

What we offer

Hybrid Flexibility: Blend in-office engagement with work-from-home opportunities for a balanced work week.
A global business with endless career possibilities around every corner and across every discipline – with valuable exposure to a vast and exciting business network.
Team discounts across our range of Woolworths Group brands you know and love and a robust rewards program that celebrates and incentivises purpose-driven work.
12 weeks paid parental leave for primary caregivers plus paid superannuation for up to 12 months while the Team Member is on parental leave - eligible from the first day of employment

Fulltime

Principal Engineer

We are looking for a Principal Developer to serve as a technical beacon for our ...

Location

Australia , Sydney

Salary:

Not provided

Woolworths Supermarkets

Expiration Date

Until further notice

Requirements

10+ years in software engineering
Recent experience in a 'Principal,' 'Staff,' or 'Technical Lead' capacity within a high-growth SaaS or product-led company
JVM Mastery: Deep expertise in Kotlin and/or Java
Frontend Fluency: Strong proficiency in TypeScript and React
Distributed Systems & Messaging: Expert-level knowledge of Message-Oriented Architectures
Cloud Native (GCP): Hands-on experience with Google Cloud Platform, specifically Kubernetes (GKE), Cloud SQL (postgres), and leveraging BigQuery
DevOps Mindset: Proponent of 'you build it, you run it.' Expert in Git and automating complex delivery workflows with GitHub Actions

Job Responsibility

Architectural Stewardship: Design and evolve complex, event-driven architectures
Workflow Orchestration: Act as the subject matter expert for distributed message oriented architectures
Technical Excellence (JVM & Beyond): Set the 'gold standard' for development in Kotlin and Java
Full-Stack Bridge: Provide guidance on the integration between robust JVM backends and modern React/TypeScript frontends
Infrastructure & DX: Standardize and optimize our GCP environment (GKE, Postgres, BigQuery) and lead the maturation of our CI/CD pipelines via GitHub Actions
Technical Mentorship: Spend significant time 'in the trenches' with senior engineers, conducting high-impact code reviews and pair programming
Strategy & Influence: Partner with Product and Engineering leadership to define technical roadmaps

What we offer

Team discounts across our range of Woolworths Group brands
A robust rewards program that celebrates and incentivises purpose-driven work
A global business with endless career possibilities
A progressive and flexible 'work from anywhere' policy
A range of programs to help you prioritise and manage your wellbeing, including 24/7 access to the Sonder app

Fulltime

Principal Engineer

As a Principal Full-stack Engineer, you will play a critical role in shaping Omi...

Location

India , Bengaluru

Salary:

Not provided

FoodLabs & Atlantic Labs

Expiration Date

Until further notice

Requirements

10+ years of experience in Software Engineering (Full Stack or Backend), with strong hands-on full-stack expertise
Proven experience building and evolving large-scale, distributed, cloud-native systems
Strong architectural judgment and experience leading system design at scale
Experience in high-growth startups or scale-up environments
Demonstrated experience mentoring engineers and leading technical initiatives
Ability to collaborate effectively with Product, Design, and senior stakeholders
Demonstrated use of AI tools to accelerate SDLC

Job Responsibility

Own and drive end-to-end full-stack solutions, from frontend experiences to backend services and cloud infrastructure
Lead architectural design and technical decision-making for scalable, distributed systems
Align engineering solutions with business goals and customer outcomes
Identify and manage technical debt, making pragmatic trade-offs between speed and long-term scalability
Lead cross-team technical initiatives and align multiple stakeholders with end-to-end responsibility
Mentor engineers across teams, raising the bar for full-stack engineering excellence
Define and promote engineering best practices, standards, and reusable patterns
Contribute to internal and external tech talks, representing Omio’s engineering culture
Evangelize use of AI tools and automation in transforming how Omio designs, develops, and delivers software

What we offer

A competitive and attractive compensation package
Opportunity to develop your skills on a new level
A generous pension scheme
A diverse team of more than 45 nationality
Develop maintainable solutions for complex problems with broad impact on the business as a whole
Make decisions that will have a direct impact on the long-term success of Omio

Fulltime

Select Country

Principal Full-Stack Engineer

Job Description

Job Responsibility

Requirements

What we offer

Looking for more opportunities?