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I maintain a production system built on Java 8 and my release calendar is getting tight. I’m looking for another seasoned Java 8 developer who can jump straight into the codebase and clear a queue of production bug fixes, with a strong focus on performance-related issues that are slowing critical paths in the application. The role is entirely about real-world production cases: you’ll receive tickets that are already reproduced in staging, investigate root causes, implement the fix, and push a merge request that passes our automated tests and basic load-testing benchmarks. If you spot broader optimisation opportunities along the way, that insight is welcome, but the first priority is resolving the existing performance bugs so we don’t miss release deadlines. You will be working in a standard Java 8 stack (Maven, Git, JUnit); familiarity with profiling tools such as VisualVM or YourKit will make your life easier, though you’re free to use whatever debugging setup you prefer as long as the fix is clean, well-documented, and regression-tested. Deliverables • Per-ticket pull requests with concise commit messages • A short note describing the root cause and the fix for each ticket • Proof that unit tests pass and that performance has improved or at least not regressed after the patch If you thrive on squeezing extra efficiency out of Java 8 code and can turn around fixes quickly, let’s get started—I need to clear these tickets as soon as possible.
Project ID: 40411640
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42 freelancers are bidding on average ₹577 INR/hour for this job

As a seasoned Java 8 developer with over 9 years of professional experience and serious passion, I am no stranger to resolving complex bugs tied to performance as well as optimizing code efficiently. I have massive expertise in Java SE and EE and possess commendable skills in tools such as Maven, Git, JUnit, alongside the ability to efficiently use profiling software like VisualVM or YourKit. That said, I'm confident that I will excel at delving into your codebase to fix any production issues promptly and effectively. Throughout my career, I've not only worked on building robust Java applications but have also focused extensively on their optimization -- both at the architectural level and via meticulous debugging within the code. My long-term work in systems potentially similar to yours has made me deeply insightful into performance tuning, fault isolation, among others - all elements critical for successful completion of your project. Moreover, given my proficiency in CI/CD pipelines and AWS-based deployments, I can prove invaluable not just during the bug-fixing process but also later in guaranteeing smooth transitions through testing and onto deployment. This additional experience comes from working on numerous enterprise-grade platforms across various domains which made architectural cleanliness, reliability, and long-term maintainability a regulatory necessity.
₹575 INR in 40 days
7.3
7.3

"I have gone through your description. "This is my area of specialization, i can get it done 100 % perfectly well. Please ping me in person. I can help you to complete all tasks. I have hands-on experience in this field. We have already done similar types of projects. Connect with us for more details. Rest assured your satisfaction is guaranteed." Looking forward to your response." Thank you for your time and I am confident that we will be a great fit for this project. Best,
₹400 INR in 40 days
4.8
4.8

Hi, I checked your requirement around fixing production issues in your Java 8 application. I’ve been working with Java for 11+ years, and a big part of my work has been debugging live systems — especially jumping into existing/legacy codebases, figuring out root causes, and fixing issues without breaking anything else. I don’t usually do quick patch fixes. My focus is more on identifying the actual cause and making sure the fix is stable and safe for production. Before getting started, I’d need a bit of clarity: 1. What kind of issues are you facing (even a rough list works) 2. Access to the repo and steps to run the project 3. Whether there’s any staging or test setup available My usual approach is simple: 1. Understand the code and reproduce the issue 2. Fix it cleanly (separate commits where possible) 3. Do a basic validation to avoid side effects 4. Share a quick summary of what was fixed For this type of work, I prefer starting with a small scope (1–2 issues), and then we can continue based on how things go. It keeps things clear and manageable on both sides. Also, since this is production-level debugging, I typically work in the ₹900–₹1200/hr range. We can start small and take it from there. If you can share the repo or issue details, I can take a quick look and suggest next steps. Thanks.
₹1,200 INR in 15 days
3.9
3.9

Hi, I went through your post regarding the Java 8 production support role. I can jump straight into your codebase and begin resolving your performance-related tickets immediately. Regards Sanjay
₹400 INR in 40 days
3.0
3.0

Hello, I can jump in immediately to help clear your Java 8 production bug backlog. I have solid experience working on live systems with tight release timelines, focusing on performance tuning and root cause analysis. I’m comfortable working with Java 8, Maven, Git, and JUnit, and have hands-on experience identifying bottlenecks using profiling tools like VisualVM. I’ve handled real-world issues such as slow queries, memory leaks, thread contention, and inefficient stream processing. My approach: * Analyze staging-reproduced issues and identify root cause * Apply optimized fixes with minimal impact on existing logic * Ensure all unit tests pass and avoid regressions * Validate performance improvements with basic load checks * Provide clear notes on cause and resolution for each ticket I write clean, maintainable code and concise commit messages, ensuring smooth collaboration and faster releases. I’m ready to start right away and help you meet your release deadlines efficiently. Best regards, Dharmender Kumar
₹575 INR in 40 days
2.4
2.4

Hi, I’m a full-stack developer with 6+ years of experience, with deep hands-on work in Java 8, Spring-based systems, and performance tuning in real-world applications. I’m comfortable picking up unfamiliar code quickly, tracing bottlenecks, and delivering clean, tested fixes under tight timelines. **How I’ll approach your tickets:** • Reproduce and analyze issues from staging with focused debugging • Identify root causes • Deliver minimal, safe fixes with clear impact on performance **For each ticket, you’ll get:** • Clean pull request with concise commits • Short root-cause + fix explanation • All unit tests passing (JUnit) • Validation that performance is improved or not regressed I’m used to working in Maven + Git workflows and handling performance-sensitive production fixes without over-engineering.. Thanks, Kishan
₹575 INR in 40 days
2.3
2.3

Hi, I can jump in right away and help clear your production bug queue. I’ve worked extensively with Java 8 in live systems, focusing on debugging and performance fixes under tight deadlines. I’m comfortable analyzing staging-reproduced issues, identifying root causes, and delivering clean, tested fixes with no regressions. Experienced with Spring Boot, Maven, Git, JUnit, SQL tuning, and profiling tools like VisualVM. I follow clear commit practices and always include short notes explaining the issue and fix. Can start immediately and turn around tickets quickly.
₹500 INR in 40 days
1.2
1.2

Hi there. I have 15 years J2EE development experience. CV in private message if needed.
₹575 INR in 40 days
1.3
1.3

Hello, Production performance bugs on a tight release calendar need someone who diagnoses fast and fixes clean — no ramp-up, no guesswork. Here's how we'd work through your ticket queue: - Reproduce and profile each issue in staging — VisualVM or similar to isolate the bottleneck - Fix implemented with root cause documented clearly per ticket - Clean pull request — concise commit messages, regression-tested against your JUnit suite - Load-testing benchmark verified before merge request submission Java 8, Maven, Git — standard stack, no friction getting started. If broader optimisation opportunities surface during investigation, we'll flag them without letting them delay the priority fixes. Clean, well-documented fixes that don't break anything downstream — that's the standard we hold every merge request to. Quick question — are the performance tickets primarily threading/concurrency issues, memory leaks, or slow database query paths? That helps us prioritise the right profiling approach from ticket one. — HustlerGuys
₹475 INR in 40 days
0.0
0.0

Hi, I can jump in and start clearing performance-related tickets right away. I’ve worked with Java 8 in production-style environments and I’m comfortable debugging real-world issues under time pressure—especially cases where performance bottlenecks affect critical paths. My usual approach is to first isolate the slowdown using profiling/log analysis, identify the root cause (inefficient queries, threading issues, memory pressure, etc.), and then implement a fix that’s both safe and measurable. I’m familiar with Maven, Git workflows, and writing/maintaining JUnit tests. For performance debugging, I’ve used tools like VisualVM and similar profilers to track CPU/memory usage and pinpoint hotspots. For each ticket, I will: * Identify and clearly explain the root cause * Deliver a clean, focused fix via pull request * Ensure all tests pass and no regressions are introduced * Validate that performance has improved (or at minimum remains stable) I understand your priority is clearing the queue quickly without risking stability, and I’m comfortable working in that kind of environment. I’m available to start immediately and can focus on fast turnaround. Let me know if you’d like me to take a look at one ticket as a starting point. Thanks.
₹575 INR in 40 days
0.0
0.0

I’m a Java developer experienced in working directly on production systems under tight release timelines. I can quickly jump into your Java 8 codebase, analyze staging-reproduced issues, and deliver clean, well-tested fixes with a strong focus on performance optimization. I regularly use profiling tools like VisualVM to identify bottlenecks in CPU, memory, and threading, and I’m comfortable debugging complex issues in Maven-based projects with Git workflows and JUnit test coverage. My approach is systematic: isolate the root cause, validate with profiling data, implement an optimized fix, and ensure no regression through testing and basic load validation. You’ll receive concise pull requests with clear commit messages, along with brief documentation explaining the issue, root cause, and applied fix. I prioritize quick turnaround without compromising code quality, ensuring your release schedule stays on track while improving application performance.
₹475 INR in 40 days
0.0
0.0

Hi, This is exactly the kind of work I’m comfortable with—debugging real production issues and improving performance in Java-based systems. I have hands-on experience with Java (including Java 8), Spring Boot, and backend systems where performance, stability, and quick turnaround are critical. I regularly work on debugging existing codebases, identifying bottlenecks, and delivering clean, regression-safe fixes. For your requirements, I would: • Analyze staging-reproduced issues and identify root causes efficiently • Use profiling/log analysis to pinpoint performance bottlenecks • Implement optimized fixes with minimal impact on existing logic • Ensure all changes pass unit tests and do not regress performance • Provide concise notes explaining the issue and resolution • Submit clean pull requests with proper commit messages I’m comfortable working with Maven, Git, JUnit, and tools like VisualVM/YourKit (or equivalent setups). I also pay attention to areas like inefficient queries, threading issues, memory usage, and unnecessary object creation—common causes of performance degradation in Java 8 systems. I can start immediately and focus on clearing your backlog quickly while maintaining code quality and stability. Let’s get started—I can take the first ticket and deliver a fix right away. Regards, Subham
₹750 INR in 40 days
0.0
0.0

As an experienced full-stack developer with a well-rounded skill set including deep knowledge of Java 8 and the entire suite of tools it operates on, I believe I am uniquely positioned to tackle your project. Throughout my career, I've consistently demonstrated the ability to dive into existing codebases and make immediate, meaningful contributions in line with organizational requirements. My daily development methodology is centered around precise analysis of performance bottlenecks, prompt fixes, and tests to ensure proper resolution without regression. In addition to Java 8 stack proficiency, I’m familiar with relevant profiling tools like VisualVM and YourKit which would expedite the debugging process for your intricate system. Notably, I have practical experience in database optimization—a skill that will be invaluable when dealing with your complex and performance-sensitive application. Throughout all my previous projects I have maintained a focus on delivering solutions that are not only effective but also efficient; this aligns well with your need for thorough and well-documented fixes for both individual tickets as well as any systemic deficiencies they may uncover. Beyond just responding reactively to current issues, my proactive approach will also allow me to identify broader optimization opportunities—hopefully allowing you to surpass your immediate deadline pressures.
₹575 INR in 40 days
0.0
0.0

For production Java 8 systems, performance issues typically stem from inefficient queries, excessive object creation, blocking I/O, or suboptimal concurrency patterns, especially under real-world load. Approach focuses on fast root-cause isolation and clean fixes. Using profiling (VisualVM/YourKit) and thread/heap analysis, I identify bottlenecks in critical paths—CPU hotspots, GC pressure, lock contention, or slow DB interactions—then validate findings against staging scenarios. Fix implementation is minimal and targeted: optimizing algorithms, reducing allocations, improving caching, tuning thread usage, or refining DB access (batching/indexing). Each fix is validated with JUnit tests and basic load checks to ensure no regression. Workflow aligns with your setup: per-ticket PRs with concise commits, clear RCA notes, and verified performance impact. Code remains maintainable and production-safe. From my corporate background, I’ve worked on performance-sensitive Java systems where meeting release timelines required precise debugging and reliable fixes under pressure. Can jump in immediately, pick up staged tickets, and turn around fixes quickly to help clear your release queue.
₹750 INR in 40 days
0.0
0.0

In need of someone who can swim seamlessly through Java 8 production systems, troubleshoot and fix performance bottlenecks, optimize the time critical paths of your application and clear a pile of release-specific bugs? Well, look no further! I am nex, an experienced Full-Stack App and Web Developer distinctly skilled in squeezing every ounce of efficiency from Java 8. Having worked extensively with Maven, Git, JUnit and more, I am well-equipped to work through your production issues promptly and effectively. My work isn’t limited to just pointing out bugs - I solve problems and add value wherever feasible. So, if I notice any opportunity for broader optimization while addressing existing bugs, I’ll definitely provide insights on that as well. Given my knack for automation scripts and process optimization, I may also be able to help you by identifying some redundant processes within the system. While working together, you can expect timely deliveries without compromising on quality. So let me take a turn at your production system and let's clear that bug queue promptly while enhancing performance along the way!
₹750 INR in 40 days
0.0
0.0

I’m a senior Java backend engineer with strong experience in Java 8 production systems, focused on diagnosing and resolving performance bottlenecks under tight release timelines. I’ve worked extensively with Spring Boot, Spring Data, and SQL optimization, and I’m comfortable diving straight into an existing codebase to deliver fast, reliable fixes. My workflow aligns closely with your needs: I analyze staging-reproduced issues, use profiling tools (VisualVM/YourKit) to pinpoint root causes, and implement clean, minimal-impact fixes. I ensure every change is covered by unit tests, passes CI pipelines, and is validated against performance benchmarks before submission. You’ll receive well-structured pull requests, clear commit messages, and concise notes explaining the issue and resolution. I prioritize quick turnaround without compromising code quality, stability, or maintainability, helping you clear your backlog and meet release deadlines efficiently.
₹575 INR in 24 days
0.0
0.0

Java 8 production bottlenecks and critical path latency issues demand immediate, targeted debugging to stabilize your release cycle. Resolving these performance-related bugs involves deep-diving into your existing codebase to identify memory leaks or inefficient logic that disrupts your deployment schedule. I focus on delivering clean, verified pull requests that address the root cause of regressions without introducing new technical debt. I am ready to integrate into your workflow and begin clearing your bug queue immediately. Working estimate for the full scope: full delivery INR 750, 14 days. Milestone structure: single project milestone. Final scope, timeline, and budget can be adjusted during discussion.
₹400 INR in 14 days
0.0
0.0

I’m a seasoned Java 8 developer with hands-on experience resolving production bugs under tight deadlines, especially performance bottlenecks affecting critical application flows. I’m comfortable diving directly into existing codebases, analyzing staging-reproduced issues, and delivering clean, efficient fixes with minimal turnaround time. I regularly use profiling and debugging tools to identify root causes, optimize SQL queries, reduce latency, and improve memory and CPU usage. My workflow ensures every fix is backed by passing unit tests and validated against performance benchmarks to avoid regressions. You’ll receive clear pull requests, concise commit messages, and a brief technical summary for each ticket explaining the issue and solution. I focus on practical, production-ready fixes that keep releases on track. I can start immediately and help you clear the backlog quickly and reliably.
₹575 INR in 28 days
0.0
0.0

I am a fresher working as a Java Backend Developer. The project i have been assigned is a bank project, where in i deal with production support and fix. I always focus on having my work delivered perfectly with high accuracy and submit before the deadline.
₹675 INR in 25 days
0.0
0.0

Hi I looked through the job description. I would be interested if you need an additional pair of hands. If you think my experience and expertise suits your requirement lets connect. Thanks, bhagawathi
₹700 INR in 40 days
0.0
0.0

India
Member since Jul 29, 2016
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$750-1500 USD
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