Sr Java Architect with IRS MBI Clearance

3M Consultancy; Poland; On-site; PLN 252,951 - 337,268; Full time

Job summary

A reputable consultancy firm based in Poland is seeking a Senior Systems Software Developer with over 10 years of experience in designing and maintaining system-level software. The role involves developing complex software components, working on operational middleware, and collaborating with engineering teams to ensure systems meet security standards. Ideal candidates should possess a deep understanding of programming and systems internals, with a focus on federal compliance and performance tuning. This position is remote and full-time.

Qualifications

• 10+ years of professional systems-level development experience.
• Strong programming experience in Java, C, C++, or similar languages.
• Deep understanding of OS internals, memory management, and distributed systems.

Responsibilities

• Design, develop, test, and optimize complex system-level software components.
• Work on operating systems, middleware, embedded systems, and core infrastructure.
• Collaborate closely with systems engineers to design scalable and secure architectures.

Skills

Java

C

C++

Secure architecture design

Debugging

Performance tuning

Job description

Senior Systems Software Developer (IRS MBI Clearance)

Job Title: Senior Systems Software Developer

Location: Remote

Duration: Full-Time

Clearance: IRS MBI Required

Position Overview

We are seeking a highly experienced Senior Systems Software Developer with 10+ years of hands‑on experience in designing, building, testing, and maintaining system‑level software. This role focuses on operating systems, middleware, embedded systems, and other foundational software components that power enterprise‑scale environments.

Key Responsibilities

• Design, develop, test, and optimize complex system‑level software components
• Work on operating systems, middleware, embedded systems, and core infrastructure
• Collaborate closely with systems engineers to design scalable and secure architectures
• Perform low‑level debugging, tuning, and performance optimization
• Ensure system reliability, resiliency, and compliance with federal security standards
• Document architecture, workflows, and integration patterns

Required Skills

• 10+ years of professional systems‑level development experience
• Strong programming experience in Java, C, C++, or similar languages
• Deep understanding of OS internals, memory management, and distributed systems
• Experience with secure architecture design in the federal environment
• Strong debugging, profiling, and performance tuning skills

Senior Application Developer / Software Engineer (IRS MBI Clearance)

Position #2

Job Title: Senior Application Developer / Software Engineer

Location: Remote

Duration: Full-Time

Clearance: IRS MBI Required

Position Overview

We are looking for a Senior Application Developer with 10+ years of total experience, including 5–7 years in designing, building, testing, and maintaining complex enterprise applications. The ideal candidate has strong experience with modern programming languages, scalable architecture patterns, and secure application development.

Key Responsibilities

• Design and develop scalable, secure enterprise applications
• Build modern software solutions using Java, Python, or other relevant frameworks
• Write clean, maintainable, well‑tested code
• Troubleshoot and resolve complex application issues
• Work with cross‑functional teams to integrate applications with enterprise services
• Implement CI/CD best practices and application performance tuning

Required Skills

• 10+ years of overall software development experience
• 5–7 years in enterprise application development
• Strong experience with Java, Spring, REST, microservices, or similar stacks
• Knowledge of secure coding practices and performance optimization
• Experience with cloud technologies (AWS/Azure), CI/CD, and automated testing
• Strong communication and problem‑solving skills

Senior Systems Engineer/Architect (IRS MBI Clearance)

Position #3

Location: Remote

Duration: Full-Time

Clearance: IRS MBI Required

Position Overview

We are seeking a Senior Systems Engineer/Architect with 10+ years of experience and at least 5–7 years dedicated to designing, integrating, and optimizing complex computing systems. This role requires deep expertise in systems architecture, interoperability, security, and performance engineering.

Key Responsibilities

• Design and implement complex systems architectures that support enterprise operations
• Integrate software, hardware, networks, and cloud services into cohesive systems
• Conduct performance analysis, capacity planning, and optimization
• Develop system diagrams, architecture documents, and integration workflows
• Collaborate with developers, security teams, and infrastructure engineers
• Ensure all systems meet federal security and compliance requirements

Required Skills

• 10+ years of systems engineering experience
• 5–7 years in enterprise systems architecture
• Strong understanding of distributed systems, networking, OS fundamentals, and cloud platforms
• Experience integrating multiple applications, services, and data flow
• Strong documentation and architecture modeling skills
• Ability to troubleshoot complex system issues end‑to‑end