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Senior Systems Engineer

L3Harris Technologies

On-site
Tallinn, EE
Full-time
Senior
6+ yrs
Salary not listedPosted 3mo ago

Real job — pulled straight from L3Harris Technologies’s careers page · Verified May 27, 2026 · No reposts.

Job description

L3Harris Technologies is hiring a Senior Systems Engineer — a full-time, based in Tallinn, EE role. Apply directly on L3Harris Technologies's careers page below.

Senior Specialist, Systems Engineer - EXPAT - Estonia

Location: Tallinn, 01, EE

Employment Type: Full-Time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers’ mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do.

L3Harris is the Trusted Disruptor in defense tech. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title: Senior Specialist, Systems Engineer - EXPAT - Estonia

Job Code: 36636

Job Location: Tallin, Estonia

Job Schedule: 10/80 regular

 

 

Job Description:

L3Harris Communications & Spectrum Dominance (CSD) seeks a Systems Engineer / Architect in Tallin, Estonia supporting Lithuania, Latvia, and Estonia MoD. The Systems Engineer will be the primary technical contact to the customer for modernizing their defense communications systems utilizing L3Harris Mission Critical Communications (MCC) Products. This role is pivotal for ensuring the operational integrity of the radio products as they are deployed within their tactical command structure and integrated into various platforms. The Systems Architect will collaborate with multidisciplinary teams both internally and with Estonia, Lithuania, Latvia MoD, acting as a key member of design, integration, testing, fielding, and maintenance efforts. Based in Tallin, Estonia, the position demands regional travel. This role is scoped for 3 years.

 

Job Description:

L3Harris Communications & Spectrum Dominiance (CSD) seeks a Systems Engineer / Architect in Tallin, Estonia supporting Lithuania, Latvia, and Estonia MoD. The Systems Engineer will be the primary technical contact to the customer for modernizing their defense communications systems utilizing L3Harris Mission Critical Communications (MCC) Products. This role is pivotal for ensuring the operational integrity of the radio products as they are deployed within their tactical command structure and integrated into various platforms. The Systems Architect will collaborate with multidisciplinary teams both internally and with Estonia, Lithuania, Latvia MoD, acting as a key member of design, integration, testing, fielding, and maintenance efforts.

 

Essential Functions:

  • Support Technical Discussions: Assist/Lead technical discussions with customers developing systems solutions based on L3Harris Radio and modern MANET Waveforms. Establish and maintain working relationships as a technical resource with the customer.
  • Develop System Architectures: Facilitate the development of comprehensive system architectures to meet customer-specific requirements for C4ISR systems, ensuring deployment over various radio frequencies for voice and data applications.
  • Assist in System Integration: Provide support during the design and integration of L3Harris products with third-party systems, including intercom systems, electronics, software applications, and power systems.
  • Support Physical Integration: Assist with the physical integration of L3Harris products into various platforms such as land vehicles, shelters, fixed sites, ships, aircraft, and UAVs.
  • Prepare Documentation: Prepare white papers and presentations and assist in presenting custom systems solutions to customers.
  • Collaborate with Teams: Work with Technical Field Service, Sales, Program, and Project Management to translate customer requirements into balanced technical, schedule, and cost solutions.
  • Coordination of Schedules / Resources: Participate in planning and coordination meetings with the customer and facilitate proper resources availability when required.
  • Travel Requirements: Willingness to travel approximately 25% of the time within region to support customer meetings, integration events, and training efforts, etc.
  • Re-initializations: Support Estonia, Lithuania, Latvia MODs to re-initialize radios as needed.

Qualifications:

  • BSEE/BSME/BSCE/BSSE and 6 years of experience or master’s degree with 4 years of work experience.
  • 6 years of experience in Systems Level Design and Integration around relevant technologies.

Preferred Additional Skills:

  • U.S. citizenship required; must be able to obtain and maintain a US Secret and NATO Secret security clearance.
  • Competency with RF Propagation, RF Co-Site, RF Colocation
  • Deployment
  • Understand the fundamentals of IP Networking
  • Knowledge of Multi-Level Security (MLS), cross-domain networks, and Federated Mission Networking (FMN) Framework Process for net-centric operations.
  • Experience demonstrated in Systems Design and Systems Integration with relevant technologies.
  • Ability to work collaboratively in a team environment and lead cross-functional teams.

 

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Frequently asked questions

What skills are required for Senior Systems Engineer at L3Harris Technologies?

The required skills for Senior Systems Engineer at L3Harris Technologies include: API.

What is the seniority level for Senior Systems Engineer at L3Harris Technologies?

Senior Systems Engineer at L3Harris Technologies is a Senior level position.

How do I apply for Senior Systems Engineer at L3Harris Technologies?

You can view the full description and apply for Senior Systems Engineer at L3Harris Technologies on EchoJobs: https://echojobs.io/job/l3harris-technologies-senior-specialist-systems-engineer-expat-estonia-tourd.