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Added 1 month ago
T
Fullstack Engineer (Java)
TEKsystems
Toronto, ON
- $80 to $90 CAD / hour
- Contract
We are seeking an experienced Senior Full Stack Application Developer to join a dynamic technology team responsible for building and enhancing enterprise-level applications. This role is…
Added 1 month ago
CO
Staff Software Engineer
Capital One
Toronto, ON
- Full-time
Act as a tech lead developer owning technical design and development of cross-functional, multi-platform, fault tolerant application systems
Added 1 month ago
C
Java Full Stack Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
…establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to…
Added 2 months ago
U
Senior Full Stack Engineer
UST
Toronto, ON
- Full-time
UST is searching for a Senior Full Stack Engineer with strong Front End expertise to help build and scale high‑impact digital platforms used by millions of users. This is an opportunity to…
Added 1 month ago
VC
Senior / Intermediate Full Stack Engineer (Backend-Leaning)
Valsoft Corporation
Remote, Canada
- Full-time
- Remote
…that operate at scale. We’re looking for a backend-leaning Full Stack Engineer who enjoys solving meaningful product problems, designing thoughtful systems, and shipping high-quality…
Added 1 month ago
CI
Full Stack Java Developer (Contract)
CoreFactor Inc.
Toronto, ON · North York (Hillcrest Village), Ontario
- Contract
CoreFactor is currently searching for multiple full stack java developers on a contract basis for a client in North, York, On.
Added 1 month ago
A
Full Stack Engineering Specialist, Front-End Angular/React & Back-End Java
Accenture
Ottawa, ON
- Full-time
Experience developing full stack applications using Java, REST APIs, microservices, Angular, and React.
Added 1 month ago
Software Development Engineer, Personnel Resource Manager
Amazon
Toronto, ON
You'll work across the full technology stack - distributed Java microservices, serverless Lambda functions, and integrations with dozens of partner systems including Learning Management…
Added 1 month ago
Senior Software Engineer - Metadata
Fivetran
ON
Proficiency in a modern backend or systems language such as Python, Java, C++, or C#
Added 2 months ago
TS
Java Architect
T-Rex Solutions
Remote, Canada
- $100,000 to $185,000 USD / year
- Full-time
- Remote
T-Rex Solutions is looking to select a Java Architect to support our Internal Revenue Service (IRS) EDOS program. The overall mission of this program is to modernize the IRS legacy Tax…
Added 2 months ago
TS
Senior Java Developer
T-Rex Solutions
Remote, Canada
- $100,000 to $185,000 USD / year
- Full-time
- Remote
T-Rex Solutions is looking to select a Senior Java Developer to support our Internal Revenue Service (IRS) EDOS program. The overall mission of this program is to modernize the IRS legacy…
Added 2 months ago
PI
Java Lead Engineer / Architect - Agentic AI
Princeton IT Services, Inc
Toronto, ON
- Full-time
We are seeking a highly experienced Java Lead Engineer / Architect to design and build next-generation distributed platforms focused on edge computing, backend services, and AI/ML…
Added 1 month ago
RB
Staff Engineer – Software Development, Architecture, Security & Governance
Royal Bank of Canada
Toronto, ON
- Full-time
…Enterprise Architecture team, leveraging their expertise in full-stack development, backend engineering, API design, and artificial intelligence to drive innovation and deliver cutting-edge…
Added 1 month ago
GS
Senior Software Engineer
Guidewire Software
Mississauga, ON · Toronto, ON
- Full-time
As a Senior Full‑Stack Software Engineer, you will design and build elegant, high‑impact capabilities for insurance content transformation and modeling, advancing Guidewire’s shift toward…
Added 1 month ago
C
Full Stack Software Engineer
Citi
Mississauga, ON
- Full-time
We are hiring a Full Stack Engineer to design, build and maintain a critical Cash & Intraday Liquidity Management platform. This platform sits at the intersection of engineering ambition…
Added 2 months ago
E
Senior Backend Engineer, Entities
EvenUp
Toronto, ON
- $184,728 to $249,926 USD / year
- Full-time
…the engineering organization. We build leading LLM-powered systems for the legal industry, transforming how complex legal documents are extracted, summarized, and structured for use by our…
Added 1 month ago
R
Staff Engineer – Software Development, Architecture, Security & Governance
RBC
Toronto, ON
- Full-time
…Enterprise Architecture team, leveraging their expertise in full-stack development, backend engineering, API design, and artificial intelligence to drive innovation and deliver cutting-edge…
Added 2 months ago
Senior Full Stack API Engineer
Questrade Financial Group
Toronto, ON
This is a comprehensive role requiring deep full-stack engineering discipline. You will bridge the gap between frontend user experience (building self-serve developer portals and SDKs) and…
Added 2 months ago
LH
AI Augmented Developer (Full Stack - Innovation Team)
LGI Healthcare Solutions
Montreal, QC
- Full-time
Develop and maintain enterprise B2B application modules with AI as your development copilot in a C#, .NET Core, Java, Angular, React, and Kubernetes environment.
Added 1 month ago
W
Senior AI Engineer, Full-Stack - Agent Factory
Workday
Vancouver, BC · Canada, BC, Vancouver
- Full-time
…product leaders, machine learning engineers, UX designers, and full-stack builders to create intelligent agents used by millions of people every…
Added 2 months ago
E
Software Engineer II
Emburse
Toronto, ON
- Full-time
Familiarity with the full stack of web development and proven history of web application development
Added 2 months ago
C
Full Stack Lead Engineer
Citi
Mississauga, ON
- Full-time
We are hiring a Full Stack Lead Engineer who can support a critical Cash & Intraday Liquidity Management platform. This platform sits at the intersection of engineering ambition and…
Added 2 months ago
A
Staff Software Engineer - Full Stack (Bangkok based, Relocation provided)
Agoda
Toronto, ON
- Full-time
Bring Your Talent to Asia’s Tech Hub! Join Agoda in Bangkok as a Staff Software Engineer (Full Stack)
Added 2 months ago
D
Developer
DCM
Mississauga, ON
- $65,149 to $81,436 CAD / year
- Full-time
As a Developer, you’ll help build, test, and support data-driven output programs for clients across banking, financial services, utilities, insurance, and pension sectors. You'll gain…
Added 2 months ago
C
Senior Software Engineer
Clutch
Toronto, ON
- $160,000 to $200,000 USD / year
- Full-time
Continuously improve the systems, tools, and developer experience that power Clutch.

T-Rex Solutions

Senior Java Developer

Remote, Canada

Remote

$100,000 to $185,000 USD / year · Full-time

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Job details

Pay: $100,000 to $185,000 USD / year
Job type: Full-time
Workplace: Remote
Experience: Bachelor's Degree and 12+ years of overall experience
Posting language: English
Posted: Jul 30, 2026

Original job description

T-Rex Solutions is looking to select a Senior Java Developer to support our Internal Revenue Service (IRS) EDOS program. The overall mission of this program is to modernize the IRS legacy Tax processing systems and is critical to the overall modernization of the IRS to improve taxpayer experience, increase voluntary compliance, and reduce the IRS’s reliance on costly and unsustainable legacy technology. We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade applications. They should have a strong understanding of Java language and Java design patterns as well as a strong understanding of configuring Spring Boot applications and extensive experience with writing microservices in a cloud environment. Responsibilities: Work with development teams and product managers to ideate software solutions. Design, develop and test custom software solutions across multiple system components or applications. Contribute to all phases of the development lifecycle. Ensure designs are in compliance with requirements. Write effective APIs and technical documentation. Write well designed, testable, efficient code in line with programming standards and interface specifications. Test software to ensure responsiveness and efficiency. Troubleshoot, debug and upgrade software. Prepare and produce releases of software components. Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review. Debug build, integration test, and deployment issues. Complete all tasks within timelines for each sprint. Identify roadblocks and issues during daily scrum call. Participates in scrum activities. Requirements: Bachelor's Degree and 12+ years of overall experience US Citizenship required Must possess an active IRS MBI Clearance and have current GFE Java Full Stack Development Service Oriented Architecture (SOA) PostgreSQL Microservices Architecture Spring Boot Excellent oral and written communication skills with client stakeholders at all organizational and technical levels Prior experience working on Agile teams Desired Skills: Experience working with Spring Boot integration with Kafka is a plus. Experience with modernizing existing legacy is a plus T-Rex Overview Established in 1999, T-Rex Solutions, LLC is a proven mid-tier business providing data-centric mission services to the Federal government as it increasingly tries to secure and leverage the power of data. We design, integrate, secure, and deploy advanced technical solutions for our customers so they can efficiently fulfill their critical objectives. T-Rex offers both IT and professional services to numerous Federal agencies and is a leader in providing high quality and innovative solutions in the areas of Cloud and Infrastructure Services, Cyber Security, and Big Data Engineering. T-Rex is constantly seeking qualified people to join our growing team. We have built a broad client base through our devotion to delivering quality products and customer service, and to do that we need quality individuals. But more than that, we at T-Rex are committed to creating a culture that supports the development of every employee's personal and professional lives. T-Rex has made a commitment to maintain the status of an industry leader in compensation packages and benefits which includes competitive salaries, performance bonuses, training and educational reimbursement, Transamerica 401(k) and Cigna healthcare benefits. T-Rex is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex (including pregnancy and sexual orientation), parental status, national origin, age, disability, family medical history or genetic information, political affiliation, military service, or other non-merit based factors. In compliance with pay transparency guidelines, the annual base salary range for this position is $100,000 - $185,000. Please note that the salary information is a general guideline only. T-Rex considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as market and business considerations when extending an offer. T-Rex offers a diverse and collaborative work environment, exciting opportunities for professional growth, and generous benefits, including: PTO available to use immediately upon joining (prorated based on start date), paid parental leave, individual and family health, vision, and dental benefits, annual budget for training, professional development and tuition reimbursement, and a 401(k) plan with company match fully vested after 60 days of employment among other benefits.

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More about this job

Responsibilities

Design, develop, and test custom software solutions and microservices to modernize IRS legacy tax processing systems. Collaborate with product managers and development teams throughout the full software development lifecycle using Agile methodologies.

Requirements

Requires a Bachelor's degree, 12+ years of experience, US Citizenship, and an active IRS MBI Clearance. Proficiency in Java, Spring Boot, PostgreSQL, and Microservices architecture is essential.

Skills

Java
Spring Boot
Microservices
PostgreSQL
Service Oriented Architecture
Full Stack Development
Agile
API Development
Cloud Environment
Java Design Patterns
Kafka
Technical Documentation

Benefits

Competitive salaries
Performance bonuses
Training and educational reimbursement
Transamerica 401(k)
Cigna healthcare benefits
Paid time off
Paid parental leave
Health insurance
Vision insurance
Dental insurance
Tuition reimbursement

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
Microservices
PostgreSQL
SOA
Full Stack
Agile
Kafka
Cloud
IRS
MBI Clearance
GFE
API
Scrum
Enterprise Applications
Legacy Modernization
Technical Documentation
Debugging
Integration Testing

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