Senior API Developer

Syntricate Technologies

Senior API Developer

Buffalo, NY (Hybrid 3 days onsite/2 days remote)

12+ Months

Web Cam Interview

$70-$80/Hr on W2

I am looking for a Senior API Developer with the below expertise. This needs to be a very senior role, expectations are hands on as well as a leadership role.

Tech Stack:

Jave/SpringBoot
Rest API
OpenShift
ELK
GitLab

System Architecture & Technical Design

Own and define the overall architecture of the application.
Choose technology stack components: database, messaging, caching, API gateway, security framework, etc.
Design APIs (RESTful, possibly GraphQL) with scalability, consistency, and security in mind.
Create architectural decision records (ADRs) to document and justify key technical decisions.

Hands-on Development

Write high-quality, production-grade code using Java + Spring Boot.
Set up and structure the initial codebase using best practices (layered architecture, DTOs, config management).
Build CI/CD-friendly microservices or modular monoliths depending on architecture choice.
Lead the development of MVP components, defining reusable patterns and common services.

DevOps & Deployment Strategy

Work closely with DevOps to define a deployment pipeline (Docker + Jenkins/GitHub Actions + Helm/Kubernetes preferred).
Own environment configurations (dev, QA, staging, prod) and secrets management.
Ensure proper logging, health checks, metrics, and monitoring are integrated from the start (e.g., Prometheus + Grafana, ELK stack).

Team Leadership & Collaboration

Establish coding standards, code review practices, and version control strategies (e.g., GitFlow).
Mentor junior engineers and support onboarding of future team members.
Collaborate with Product Owners, UX, and QA to refine requirements and deliver high-quality features.
Act as the technical face of the team in architecture discussions, demos, and stakeholder meetings.

Security & Compliance

Define and implement authentication (OAuth2, JWT, or enterprise SSO).
Ensure data security, secure endpoints, and follow secure coding practices.
Be proactive in identifying security vulnerabilities and remediating them (OWASP awareness is expected).

Documentation & Knowledge Transfer

Maintain living documentation including:

API specifications (OpenAPI/Swagger)
Architecture diagrams and integration maps
Deployment and runbooks
Facilitate knowledge transfer to new team members and support operational readiness.

Initial Deliverables (First 60-90 Days)

Technology stack recommendation finalized and documented.
Application architecture (incl. service boundaries, database models, integration points).
CI/CD pipeline defined and integrated for basic services.
MVP-level Spring Boot microservices scaffolding completed and deployed to dev/test.
Setup of unit tests, integration tests, and static code analysis tools.
Knowledge base started (Confluence, Git repo docs,)

Please provide responses for ALL of the questions below to confirm you have ALL of the required skills/experience (please reply ASAP as submittals to our client are time sensitive):

Are you currently under contract w/ an employer where you require C2C only?
If hired, can you work as a W2 employee of our company, Globalquest, for the contract duration ( required, no exceptions )?
Do you reside in or near the Buffalo, NY area, or open to relocation out of pocket to be onsite from day 1 in a hybrid role ( 3 days onsite/2 days remote - mandatory, no exceptions )?
If relocating, are you able to relocate within 2 weeks' of offer acceptance?

Skill / Category Experience (Years) Relevant Project(s) Commentary / Highlights Overall IT experience Senior API Developer (min. of 8 to 10 yrs. required) Own and define the overall rchitecture of the application (required) Banking and/or Financial domains (ideal) Java (required) Spring Boot (required) Rest API (required) OpenShift (required) ELK (required) GitLab (required)

Apply

Vacancy posted 4 hours ago

Similar jobs that could be interesting for youBased on the Senior API Developer in Buffalo, NY vacancy

Senior Java Developer
..., analytical, and decision-making abilities. • Ability to manage and mentor a team. • Experience in Agile (Scrum/Kanban) project management. • Proven experience in leading technical teams in microservices • Proficiency in RESTful API development and support.
Senior
Work experience placement
United IT Solutions
Buffalo, NY
4 days ago
Senior Software Developer
$93.01k - $102.49k
...Senior Software Developer The Senior Software Developer works within our collaborative R&D team to build and support software solutions for... ...solutions. Exposure to technologies such as Docker, SQL, REST APIs, FastAPI, or cloud platforms (Azure preferred) is a plus....
Senior
Work experience placement
StarkTech LLC Defunct
Buffalo, NY
16 hours ago
Senior Back-End Developer
...Typical duties include analysis, planning, developing requirements documents, building... ...capabilities and integrations, RESTful API development and modification, database management... ...and internal value analysis including seniority and merit systems, as well as internal...
Senior
Minimum wage
Contract work
Temporary work
Work experience placement
Remote work
MAXIMUS
Buffalo, NY
4 days ago
Senior Angular Developer
...Senior Web Developer - Angular Experience: ~8+ Years Role Summary & Key Responsibilities: ~ We are seeking an experienced Senior... ...enterprise risk analytics Develop backend services and APIs using Node.js Integrate with RESTful or GraphQL services...
Senior
Mindlance
Buffalo, NY
3 days ago
Senior Application Developer
$110k - $140k
...quality of life inside and outside of work. Job Title : Senior Application Developer Reporting To: Director, Digital Execution Work... .... Strong experience with Azure (e.g. Functions, APIs, messaging, data services). Proficiency in multiple programming...
Senior
Remote work
Flexible hours
3 days per week
Moog
Buffalo, NY
3 days ago
Senior Platform Engineer
$100.7k - $136k
...opportunity Delaware North is hiring an Senior Platform Engineer to join our Technology... ...What will you do? Design, develop, and maintain integration services using... ...integration patterns Build and support APIs, event driven integrations, and data exchange...
Senior
Full time
Part time
Remote work
Delaware North
Buffalo, NY
3 days ago
Senior Software Engineer / Architect - Search Engine Internals (Full-Text & Hybrid Retrieval)
$135.2k - $306.4k
...Job Description Senior / Principal Software Engineer or Architect Database Engine, Search & Document Systems... ..., vector search, or related systems. Document APIs, Compatibility, and Migration Help evolve developer-facing document APIs, including Oracle's MongoDB-...
Senior
Full time
Temporary work
Flexible hours
Oracle
Buffalo, NY
1 day ago
Senior Principal Software Engineer
...Command and Control (JADC2). SAIC has an immediate opening for a Senior Principal Software Engineer experienced in software and... ...design, development, testing, deployment, and maintenance. Develop and optimize the secure software hosting environment to ensure...
Senior
Immediate start
Remote work
Science Applications International Corporation
Buffalo, NY
4 hours ago
Senior Java Full Stack Developer
...I have an opportunity for "Java Full Stack Developer @ Scottsdale, AZ - Buffalo, NY or Irving, TX" and I am looking for a candidate who can join Immediately if you are interested, reply to me with your updated resume or if you could refer someone I would really appreciate...
Senior
Immediate start
Remote work
Navtech
Buffalo, NY
16 hours ago
Senior Mechanical Integrity Inspector / API Inspector
$30 - $45 per hour
...Senior Mechanical Integrity Inspector Are you a Senior Mechanical Integrity Inspector or API-certified Inspector looking for a stable home base instead of chasing the next contract... ...their work and want a role with room to develop over time. Employees receive a...
Senior
Hourly pay
Contract work
Local area
Work from home
Encorus Group
West Seneca, NY
1 day ago
Senior Front End Developer
...development programs/projects. - Practical experience developing in a cloud environment - Experience designing, developing... ...any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. Annual...
Senior
Minimum wage
Contract work
Temporary work
Work experience placement
Remote work
MAXIMUS
Buffalo, NY
4 days ago
Senior Java Developer
...processes, operations and strategic direction. May assist in developing expense and capital budgets. Understand and adhere to the... ...completing projects within schedules. The position interacts with senior management, other technology personnel, clients and vendors....
Senior
Work experience placement
Mindlance
Buffalo, NY
16 hours ago
Senior Software Developer
Job Requirements The Senior Software Developer works within our collaborative R&D team to build and support software solutions for commercial... ...solutions. Exposure to technologies such as Docker, SQL, REST APIs, FastAPI, or cloud platforms (Azure preferred) is a plus....
Senior
Work experience placement
Stark Tech Group
Buffalo, NY
more than 2 months ago
SAP BRIM Consultant, Senior Associate
$77k - $202k
...The Opportunity As a SAP BRIM Consultant, Senior Associate, you will play a pivotal role in helping clients optimize their operational... .... This position offers a dynamic environment where you can develop a deeper understanding of the business context and how it is evolving...
Senior
H1b
PwC
Buffalo, NY
2 days ago
NGA AI Engineer Senior Manager
$91k - $321.5k
...leveraging advanced technologies and techniques to design and develop robust data solutions for clients. They play a crucial role in... ...innovative AI solutions that drive operational excellence. As a Senior Manager you will serve as a strategic advisor, leveraging...
Senior
Full time
H1b
PwC
Buffalo, NY
3 days ago
Cyber SDC - WAF Operations Solution Engineer - Senior - Consulting
$106.8k - $194.8k
...remediation efforts. Collaborate with incident response teams to investigate and respond to security incidents in a timely manner. Develop and maintain WAF policies, rules, and documentation to align with best practices and compliance requirements. Provide support...
Senior
Summer holiday
Flexible hours
EY
Buffalo, NY
3 days ago
Senior Cloud Data Engineer
$116.4k - $194k
...the flexibility to work from home one day per week Overview: The Senior Principal Cloud Data Engineer is a senior-level individual... ...security by design. Standards, Patterns & Reference Architectures Develop and maintain approved reference architectures and technical patterns...
Senior
Work experience placement
Work from home
1 day per week
M&T Bank
Buffalo, NY
1 day ago
Senior Software Engineer, Platform
$168k - $230k
...&D organization is home to some of the most innovative minds in cloud infrastructure and open‑source software. We’re looking for a Senior Software Engineer to join our Platform Engineering team. You get to go in at the ground level of how our production infrastructure...
Senior
ASTRONOMER INC
Buffalo, NY
3 days ago
GenAI Python Systems Engineer -Senior Manager
$124k - $280k
...At PwC, our people in data and analytics engineering focus on leveraging advanced technologies and techniques to design and develop robust data solutions for clients. They play a crucial role in transforming raw data into actionable insights, enabling informed decision...
Senior
H1b
PwC
Buffalo, NY
2 days ago
Senior Manager, Oracle Cloud Technical Lead
$124k - $280k
...and clearly communicate how things fit together. Your ability to develop and sustain high performing, diverse, and inclusive teams, and... ...implementation of impactful Oracle technology solutions. As a Senior Manager you shall guide large projects, innovate processes, and...
Senior
H1b
PwC
Buffalo, NY
2 days ago
Principal Software Engineer
...Lead or participate in technical evaluations of vendor software. Develop and implement back-end architectures with a strong emphasis on... ...various systems. Designing, building, and maintaining robust REST APIs in Java, Python, or XQuery, including conducting code and design...
Work at office
M&T Bank
Buffalo, NY
3 days ago
Oracle Services - Oracle Cloud Application Technical Consultant - Senior - Tech Cons - Open Location
$102.5k - $187.9k
...and implement the core applications and technology required to run their business. As a Senior in Application Design and Development, you will be at the forefront of developing and integrating user interfaces across diverse platforms such as mobile, web, and tablet....
Senior
Summer holiday
Flexible hours
EY
Buffalo, NY
1 day ago
Sr. Software Engineer
$120k - $150k
...accountability continues to drive innovation and global growth. As a Senior Software Engineer in our Space & Defense Group in East Aurora... ...debug It’d be great if you also had: Certified LabVIEW Developer Familiarity with analog and digital hardware design,...
Senior
Relocation package
Flexible hours
Moog
Buffalo, NY
21 hours ago
Senior IT Solutions Engineer
$150k - $200k
...technology initiatives that enable our mission of making the world healthier, cleaner and safer. Collaborate with business leaders to develop and implement strategic technology roadmaps and support our business teams translate business requirements into technical solutions...
Senior
Temporary work
Thermo Fisher
Grand Island, NY
3 days ago
SR IT SYSTEMS ENGINEER - PUB SEC
$88.86k - $118.48k
...future of AI‑ready connectivity, join us today. The Role The Senior IT Systems Engineer provides advanced Tier II support by... ...documentation and SOP for Transport discipline supporting the NOC. Develop and maintain Circuit Layout Records, Network Diagrams, and...
Senior
Full time
Temporary work
Work at office
Remote work
Shift work
Night shift
Lumen
Buffalo, NY
2 days ago
Senior DevOps Engineer
$85k - $140k
...Job Summary A Senior DevOps Engineer is needed for a direct hire opportunity in Buffalo, NY, supporting secure, cloud-native infrastructure and automation initiatives. This role is ideal for a hands-on DevOps professional who enjoys building scalable AWS environments...
Senior
Temporary work
H1b
Remote work
AppleOne
Buffalo, NY
15 days ago
Junior Software Developer
$100k
...looking for entry-level software programmers, Java Full stack developers, Python/Java developers, Data analysts/ Data Scientists, Machine... ..., Microservices, Docker, Jenkins, Github, Kubernates and REST API's experience Excellent written and verbal communication skills...
Full time
H1b
Remote work
SynergisticIT
Buffalo, NY
2 days ago
Solution Engineer
$69k - $105k
...requires close collaboration with business stakeholders, automation developers, and AI platform teams to deliver scalable, secure, and... ...technologies Understanding system integration concepts, including REST APIs, JSON/XML, authentication, and error handling Working...
Work at office
Flexible hours
Key Bank
Buffalo, NY
4 days ago
Software Engineer II
...experienced backend engineer who enjoys designing, developing, and supporting high-performing... ...a passion for building scalable, secure APIs. Location: Buffalo, NY (Candidate must... ...cross-functional teams. Work closely with senior technology leadership, business partners,...
Work experience placement
Local area
CTG, Inc.
Buffalo, NY
3 days ago
Software Engineer
$80.9k - $134.8k
...Enterprise Financial Crimes & Identity that develops technology solutions supporting Fraud,... ...programming languages to be verified by a senior team member. Utilize source control... ...Experience supporting modern web applications and API-driven architectures. Application...
Work experience placement
M&T Bank
Buffalo, NY
3 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior API Developer. Be the first to apply!