Sr Back End Java Developer
$90 - $100 per hourTemporary
Hays
Role: Senior Backend Developer
Length: 1 year contract (strong potential for extension)
Rate: $90-$100/hr INC
Location: Downtown Toronto (1 day onsite)
Your New Company
Join a high-performing digital engineering team within a leading, enterprise-scale organization focused on building modern, scalable platforms. This team operates in a fast-paced environment, driving innovation through microservices and distributed architecture to support millions of users across digital products.
Your New Role
As a Senior Backend Developer, you will play a critical hands-on role in designing, building, and maintaining scalable backend systems and APIs. You will contribute directly to the development of microservices within a distributed architecture, while also supporting ongoing enhancements and maintenance of existing systems.
This is a highly technical, coding-heavy role requiring strong ownership and deep backend expertise.
Key Responsibilities:
- Design, develop, and maintain scalable backend services using Java and Kotlin
- Build and optimize APIs within a microservices architecture
- Drive system design and contribute to architectural decisions across distributed systems
- Write high-quality, production-ready code with strong testing practices
- Maintain and enhance existing backend services and microservices
- Work within event-driven architectures supporting real-time systems
- Collaborate closely with cross-functional engineering teams
What You’ll Need to Succeed
- 10+ years of backend development experience, with a strong focus on building scalable systems
- Proven senior-level experience as a hands-on Backend Developer (not just design/lead)
- Strong expertise in Java and Kotlin
- Demonstrated experience building scalable APIs and distributed systems
- Deep experience with microservices architecture
- Strong hands-on experience with Spring / Spring Boot
- Solid knowledge of SQL and relational databases
- Experience working with event-driven architectures
- Strong system design capabilities and ability to influence architecture
- Experience with unit testing and development testing practices
- Proven experience maintaining and evolving existing production microservices
Nice-to-Have:
- Experience with Google Cloud Platform (GCP)
What You’ll Get in Return
- Opportunity to work on large-scale, high-impact backend platforms
- Exposure to modern engineering practices across distributed systems
- A highly collaborative, engineering-driven team environment
- Competitive compensation aligned to senior-level market rates
- Flexible hybrid working model
What You Need to Do Now
If you’re a true senior-level backend developer with strong expertise in Java, Kotlin, and microservices, apply directly or reach out for a confidential discussion.
Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Sr Back End Java Developer in Toronto, ON vacancy
$86.9 - $104.28 per hour
...RQ11329 - Sr. Software Developer - Back End 5+ month contract (108 business days) - possible extension ONSITE 5 days - 222 Jarvis St Must Have: ~10+ years of experience as a designer and developer in the large-scale multi-client web applications ~10+...SeniorContract workManual labor- ...the Manager of Software Engineering, we are looking for a Senior Java Back End Engineer. You will play a pivotal role in advancing the impact... .... As a strong individual contributor, you will design and develop scalable systems, working directly with the architecture team and...SeniorLong term contractFull timeInternshipWork at officeRemote workFlexible hoursShift work
- ...Job Responsibility: BIMM is booming, so we're looking for an experienced Lead Back End Developer to join our team! As we observe a hybrid model, this role will require you to be in office at BIMM HQ (Distillery District) up to 2 days per week. Who we are BIMM is...SuggestedFull timeSecond jobSummer holidayWork at officeNight shiftWeekend work2 days per week
$135k - $154k per year
...video platform, cloud services, advertising solutions, and a non-custodial cryptocurrency wallet. Rumble is seeking a Senior Back-End Developer to design, build, and maintain high-performance server-side systems that power a large-scale video platform serving millions of...SeniorLong term contract$65.5k - $99k per year
...online tax research content and solutions to other firms and organizations. As part of the EY E-publishing technology team, the Back-End .Net Developer will help build and support the platforms that make this content accessible, efficient and easy to use. This is an...SuggestedShift workWeekend work- ...remediation initiatives. The Role Capco is seeking an Junior Backend Developer ( Contract - 6 months ) to support a major Financial Services... ...’ll Do Design, develop, and maintain backend services using Java and Spring Boot within enterprise-scale applications. Support...Contract workInternshipImmediate start
$80k - $130k per year
Sr. Java Developer Position Description As a Java Developer, you will be instrumental in dissecting business requirement and translating it... ...and successful deployment of large scale projects from end to end. 15. Hands on experience in following the iterative and...SeniorFlexible hours$50k - $72k per year
...gateway to exciting and impactful tech projects. We specialize in end-to-end software outsourcing, linking Latin American talent with... ...the future of technology. Role Overview: As a Senior Java Developer, you will be working with a dynamic fintech client based in Toronto...SeniorFull timeFor contractors$86.9 - $104.28 per hour
...RQ11237 - Sr. Software Developer - Back End 10-month contract (202 business days) - possible extension ONSITE 5 days - 222 Jarvis Street Security Level: CRJMC NOTE: Hiring Manager is looking for a strong full-stack developer with API Dev exp. Must Have...SeniorContract work- ...Job Responsibility: Sr Java FSE Developer At Cognizant, our global community sets us apartan energetic, collaborative and inclusive workplace where everyone can thrive. And with projects at the forefront of innovation, you can build a varied, rewarding career and draw...SeniorFull timeWork at officeFlexible hours2 days per week
$67.04 - $74.06 per hour
Our client, a prominent leader in enterprise technology solutions, is seeking a seasoned Java/J2EE Developer to join their dynamic team. In this role, you will drive the design, development, and maintenance of high-volume, mission-critical applications within a cutting-edge...SeniorManual labor$60 - $62 per hour
...Job Title: OpenText Exstream and Quadient Sr. Developer Location: Toronto, ON Work Arrangement: Hybrid (3-4 days WFO) Employment Type: Contract Domain: BFSI Hourly rate :-CAD 60-62/hour Application Deadline: July 30th, 2026 SKILLS REQUIRED Senior OTX...SeniorHourly payContract work- We are seeking a highly accomplished Senior Software Developer - Back End to drive the technical design, core server-side programming, and pipeline... ...in one or more major backend programming environments (Java, Python, or JavaScript/TypeScript with Node.js) paired with extensive...SeniorLong term contractContract work
- ...Wisedocs is a fast-growing, venture-backed AI platform that transforms how insurance companies... ...Summary We're seeking a Senior Back-End Engineer who will be instrumental in... ...Working in collaboration with front-end developers to integrate user-facing elements with server...SeniorFull timeCasual workImmediate startFlexible hours
$89.9 - $107.99 per hour
...RQ00665/RQ00666 - Sr. Software Developer- Front End 2 openings - 2 submissions 6-month contract (130 business days) - possible extension 3 days onsite/ 2 days remote (subject to HMs discretion) -Metro Hall 55 John Street Note:Candidates will be asked to do...SeniorFull timeContract workRemote work- ...RQ11015 - Sr. Software Developer- Front End 2-year contract (508 business days) - possible extension ONSITE 5 days - 222 Jarvis St Responsibilities: Designing developing and implementing front end code including user interface interactions and creating...SeniorFull timeContract workInternship
- ...focus on both acquiring and issuing business, we are developing a mobile-first platform that offers a wide range... ...for the future. We are looking for several Java Developer Engineers with strong background in back end development and bank channel integration in the payments...Permanent employmentFull timeContract workWork at officeMonday to friday
- Sr. Software Developer – Java AWS Responsibilities ~Participate, as part of the development team, in solution development related activities including solution design, development, and testing ~Work with Application Architect and Technical Lead to develop a cloud-native...SeniorContract work
- ...grade backend language (e.g., Python, Java, Kotlin, Go, C#, etc.). Strong... ...power Forma’s platform. By the end of your first 30 days, you will have: Developed a strong understanding of Forma.... ...that improve system integrity and developer velocity. Demonstrated clear...SeniorLong term contract
- ...your experience at Sovereign. Are you a developer who is looking for an exciting opportunity... ...load conditions. Work closely with end PO's and BA's, to understand business needs... ...consumer and producers. Hands on in Core Java, Multithreading, Transactions, Exception Handling...SeniorFull timeWork at officeFlexible hours2 days per week
$120k - $145k per year
...who are lifelong learners. About The Role As a Full Stack Java Developer you'll be tasked with working on web application development in... ...programming skills utilizing Spring Boot or Spring Cloud ~ Front end JS framework experience using React or Angular or similar ~...SeniorFull timeWork from homeFlexible hours- ...Sr Java Backend Developer - Java, Spring Boot, Kafka, REST API Location: Toronto, ON - Hybrid (4 Days WFO) Duration: 6-12 months Experience... ...Java Backend Developer who has some web application (front-end) experience. Role and Responsibilities As a Backend...SeniorContract work
- ...LotusFlare are replacing traditional business back ends with an engagement-centric, dynamic... ...stack. They are responsible for further developing, securing, and scaling the back-end infrastructure... ...—experience with other languages such as Java, Python, Golang, C++, or similar is...SeniorInternshipWork at officeWorldwide
$72k - $138k per year
...matter experts through mentoring and on the job coaching Summary We are passively seeking Senior Java Developers to join our team on a 1-year fixed term. As a Java Developer at Deloitte, you will play a crucial role in designing, developing, and maintaining Java-based...SeniorLong term contractTemporary workFixed term contractFlexible hours$105 per hour
...of our client in Public Sector, we are looking contract Senior Java Developer Description Duration: 8 Month Work Mode: Hybrid 2-3 days... ...compliant (AODA) · You have the ability to lead teams through end-to-end software development life cycle, including deployment using...SeniorHourly payContract workTemporary workFixed term contractRemote workShift workDay shift$100k - $110k per year
...Job Responsibility: Job role - : Java full stack Developer Location-: Toronto, ON Duration-: Full Time Must Skills: 1. Front end : Angular (Latest Version) 2. Back end: Java Springboot 3. Kafka, MongoDB 4. Should have worked on Agile Environment Minimum exp...SeniorFull timeWork at officeMonday to friday$110k - $120k per year
...Job Responsibility: Job Role-: Java Developer (eSignature) Location-: Toronto, ON (Hybrid) Hire Type-: Full Time -: Skill: Core Java, JAVA-J2EE, Spring Boot Actual Role: Senior Java Developer with API development Experience (eSignature) Location: Oakville, CA...SeniorFull timeMonday to friday$80k - $130k per year
Senior Java Developer Position Description CGI is seeking a Senior Java Developer to join our consulting delivery teams in the Greater... ...and Kafka based event streaming to modern Angular or React front ends — deployed on Azure and AWS. This is a hands on senior...SeniorContract work$86.8 - $104.16 per hour
...RQ11221 - Sr. Software Developer- Front End 10-month contract (200 business days) - possible extension of 2 years ONSITE 5 days - 87 Sir William Hearst Ave., Toronto, Ontario M3M 0B4 Must-haves: ~ React ~ REST APIs ~ JavaScript and TypeScript ~ Node...SeniorLong term contractContract workInterim role$120k - $130k per year
...such a workplace intrigues you, we hope you’ll join us. About the role: We are looking for an experienced Senior Front-End Software Developer to help us craft scalable, accessible, and ultra-responsive web experiences. In this role, you will write clean, testable code...SeniorFull timeInternshipWork at officeFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Sr Back End Java Developer. Be the first to apply!
Related searches
- backend software developer Toronto, ON
- backend developer Toronto, ON
- java developer no experience Toronto, ON
- java software developer Toronto, ON
- java developer Toronto, ON
- entry level java developer Toronto, ON
- développeur java Toronto, ON
- senior java developer Toronto, ON
- java developer remote Toronto, ON
- junior java developer Toronto, ON